⋡   ᰴ                   ╙  ภ  ᐕ  ᦬⎇ⓥࡁ࡯࠻
㊀޿㔚ሶ♽ߩ⿥ᩰሶ᭴ㅧ ̅ᣂߚߥ 2 ᰴర㊂ሶ⥃⇇♽̅ ባᚭኡ᣿3㋕♽⿥વዉ૕ 1111 ♽ߣ 122 ♽ߦ߅ߌࠆᩭ⏛᳇౒㡆 (NMR) ਛ੗␭੺10࠱࡞㧙ࠥ࡞ᴺߦࠃࠆㅘ᣿ᄙሹᕈ‛⾰ߩวᚑߣ⹏ଔ ㊄᫪ਥ␽18᦭ᯏዉ㔚૕ߦ߅ߌࠆᝄേಽశቇ⊛⎇ⓥਛ㊁⟵᣿27⍴ ା
2 ᰴరⓨ㑆ߦ‫߽ᦨޟ‬㊀޿㔚ሶ‫ࠍޠ‬ታ⃻37․ 㓸
2009 ᐕᐲૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯⎇ⓥ੤ᵹળ㐿௅ႎ๔ ⍫ᜬ⑲⿠38̆⊒⴫ⷐᣦ㓸ࠃࠅ40࠮ࡦ࠲࡯࠮ࡒ࠽㧙ႎ๔76ㆇ༡ᆔຬળࠃࠅ
ኙ೷ଏ⛎⁁ᴫ ศ↰ࠠࡖࡦࡄࠬ࡮ቝᴦࠠࡖࡦࡄࠬ࡮᩵ࠠࡖࡦࡄࠬ78ኙ೷ଏ⛎㑐ଥᬺോᜂᒰ⠪㧘ࡋ࡝࠙ࡓࠟࠬ࿁෼ਛ⛮ᚲ⽿છ⠪80ኾછᢎຬ㧘ද⼏ຬ㧘ㆇ༡ᆔຬ 81ᛩⓂ᩺ౝ83✬㓸ᓟ⸥841



Low Temperature and Materials Sciences (Kyoto University)
Number 16, JUNE 2010


Table of Contents
Research Reports
Superlattice Structure in Heavy Fermions –A New Two-Dimensional Quantum Critical SystemHiroaki Shishido 3

NMR study on the 1111 and 122 iron pnictide superconductors Yusuke Nakai 10
Sol-Gel Synthesis and Characterization of Transparent Porous MaterialsKazuyoshi Kanamori18

Vibrational Spectroscopic Studies on Organic Conductors Yoshiaki Nakano 27

Short Letter
Realization of the heaviest electron in the two-dimensional space 37

Featuring Article
Report on LTM Center Exchange Meeting 2009Hideki Yamochi 38

LTM Center Seminars76
From Organizing Committee
Amounts of Cryogen Consumptions : Yoshida Campus, Uji Campus and Katsura Campus 78
Staffs contributing to Cryogen Supply and Responsible Persons for He Gas Recovery Stations 80
Research staffs of the LTM center, Member of the Committees : Steering Committee andorganizing Committee81

Call for Manuscript83
Editor’s Note842

研究ノート㊀޿㔚ሶ♽ߩ⿥ᩰሶ᭴ㅧᣂߚߥ 2 ᰴర㊂ሶ⥃⇇♽Superlattice Structure in Heavy Fermions– A New Two-Dimensional Quantum Critical System –ባᚭኡ᣿ 
੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ ੩ㇺᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼‛ℂቇ࡮ቝቮ‛ℂቇኾ᡹
H. Shishido1,2
1
Research Center for Low Temperature and Materials Sciences, Kyoto University
2
Department of Physics, Kyoto University㩷 㩷 Confinement of the heavy-fermions to reduced dimensions is expected to provide a novel physical systemwith ultimately strong correlations and enhanced quantum fluctuations.We have grown artificial superlattices of
CeIn3(m)/LaIn3(n), in which m-layers of heavy-fermion antiferromagnet CeIn3 and n-layers of a non-magnetic
isostructual compound LaIn3 are stacked alternately, by a molecular beam epitaxy. By reducing the thickness of
CeIn3, we observe a suppression of antiferromagnetic order, a deviation of the Fermi liquid behavior and anenhancement of effective mass inferred from the resistivity coefficient, which imply new `dimensional tuning'towards a quantum critical point.
 ߪߓ߼ߦ
 4f ゠㆏ߦ㔚ሶࠍᜬߟᏗ࿯㘃ర⚛ࠍ฽߻޽ࠆ⒳ߩ㊄ዻ㑆ൻว‛ߢߪ㧘ᒝ޿㔚ሶ⋧㑐ߦࠃࠅવዉ㔚ሶߩ
᦭ല⾰㊂߇⥄↱㔚ሶߩ 1000 ୚ߦ߽㆐ߔࠆࠃ߁ߥ‫ޟ‬㊀޿㔚ሶ‫⁁ޠ‬ᘒ߇ᒻᚑߐࠇࠆ㧚㊀޿㔚ሶ♽ߪ੹߹ߢ⍮ࠄࠇߡ޿ࠆਛߢᦨ߽ᒝ޿㔚ሶ⋧㑐ࠍᜬߟ♽ߢ޽ࠆ㧚4f ゠㆏ߦ㔚ሶࠍ 1 ୘ᜬߟ Ce ߩൻว‛ߢߪ㜞᷷
ߢ 4f 㔚ሶߪዪ࿷ߒߡ߅ࠅ㧘ᄢ߈ߥ⏛᳇ࡕ࡯ࡔࡦ࠻ࠍᜬߟ߇㧚㒠᷷ߣߣ߽ߦવዉ㔚ሶߣ 4f 㔚ሶߩᷙᚑ߇⿠ߎࠅ㧘ࠬࡇࡦ৻㊀㗄ࠍᒻᚑߒߡ⏛ᕈ߇ᶖᄬߒߡ޿ߊ㧔Kondo ലᨐ㧕㧚4f 㔚ሶߣવዉ㔚ሶ߇ᷙᚑߒ
ߚ⁁ᘒߪ Kondo 㔚ሶ㔕ߣ๭߫ࠇ㧘Ce ේሶ߇๟ᦼ⊛ߦ㈩೉ߒߚ♽ߢߪૐ᷷ߦ߅޿ߡ Kondo 㔚ሶ㔕ห჻߇ߟߥ߇ࠅ㧘⚿᥏ో૕ߦࠊߚߞߡࠦࡅ࡯࡟ࡦ࠻ߥ⁁ᘒ߇ᒻᚑߐࠇࠆ㧔Kondo ᩰሶ♽㧕㧚ߘߎߢߪ㧘ዪ࿷ࡕ࡯ࡔࡦ࠻߇ᜬߞߡ޿ߚ⏛᳇⊛ߥࠛࡦ࠻ࡠࡇ࡯ߪ㔚ሶ♽ߦ⒖ࠅ㧘㔚ሶᲧᾲଥᢙ߇Ⴧᄢ㧘ߔߥࠊߜ⁁ᘒኒᐲ߇Ⴧᄢߔࠆ[1]㧚
 ৻ᣇ㧘વዉ㔚ሶࠍᇦ੺ߣߒߡዪ࿷ࡕ࡯ࡔࡦ࠻㑆ߦ⋧੕૞↪߇௛߈㧘⏛᳇⒎ᐨ߇቟ቯൻߐࠇࠆ႐ว߇
޽ࠆ㧚ߎߩ⋧੕૞↪ߪ Ruderman - Kittel - Kasuya - Yosida (RKKY)⋧੕૞↪ߣ๭߫ࠇࠆ㧚Ce ൻว‛ߩၮᐩ⁁ᘒߪ Kondo ലᨐߣ RKKY ⋧੕૞↪ߩ┹วߦࠃߞߡ᳿߹ࠅ㧘f 㔚ሶߩㆇേࠛࡀ࡞ࠡ࡯߇ RKKY ⋧੕૞↪ߦᛂߜൎߡ߫ૐ᷷߹ߢ㕖⏛ᕈߩ⁁ᘒ߇⛯߈㧘ㅒߩ႐วߪ f 㔚ሶ߇ዪ࿷ߒߚ⏛᳇⒎ᐨ⁁ᘒ߇↢ߓࠆ㧚࿶ജ㧘⏛႐㧘⟎឵ലᨐߩ᭽ߥᄖㇱࡄ࡜ࡔ࡯࠲ߦࠃࠅ㧘RKKY ⋧੕૞↪ߩఝ൓ߥ⁁ᘒ߆ࠄ Kondo ലᨐߩఝ൓ߥ⁁ᘒߦᄌൻߐߖࠆߎߣ߇ߢ߈ࠆ㧚ᄖㇱࡄ࡜ࡔ࡯࠲ߩ೙ᓮߦࠃࠅ 2 ᰴ⋧ォ⒖ ⏛᳇⒎ᐨォ⒖ߩ᷷ᐲ߇ 0 K ߹ߢਅ߇ߞߚߣ߈㧘ᾲំࠄ߉ߢߪߥߊ㊂ሶࠁࠄ߉߇㊀ⷐߦߥࠆ㧚ߎߩ႐ว⋧ォ⒖ߪ㊂ሶ

3

⋧ォ⒖ߢ޽ࠅ㧘ߘߩὐߪ㊂ሶ⥃⇇ὐߣ๭߫ࠇࠆ㧚㔚ሶ㑆ߦ⋧੕૞↪ߩ޽ࠆ㊄ዻߢߪ৻⥸ߦ Landau ߩࡈࠚ࡞ࡒᶧ૕⺰߇⦟ߊᚑࠅ┙ߟ߇㊂ሶ⥃⇇ὐㄭறߢߪ⏛᳇ំࠄ߉߇⊒㆐ߒ㧘㔚ሶ♽ߩᝄࠆ⥰޿ߪࡈࠚ࡞
ࡒᶧ૕⊛ឬ௝߆ࠄㅺ⣕ߒߚ߽ߩߣߥࠆ㧚ߐࠄߦવዉ㔚ሶߩ᦭ല⾰㊂ߩ㗼⪺ߥჇᄢ߿㧘⏛᳇ំࠄ߉ࠍᇦ
੺ߣߒߚ⇣ᣇ⊛⿥વዉߥߤ᭽‫⇣ߥޘ‬Ᏹߥ‛ℂ⃻⽎߇⃻ࠇࠆ㧚ߎߩࠃ߁ߦㄭ⮮ലᨐߣ RKKY ⋧੕૞↪ߩ┹วߦࠃߞߡ߽ߚࠄߐࠇࠆ㊂ሶ⋧ォ⒖ߪ㊀޿㔚ሶ♽ߩ⎇ⓥߦ߅ߌࠆਛᔃ⊛⺖㗴ߩ৻ߟߢ޽ࠆ㧚[2, 3]㧚
 ߐߡ㧘ߎࠇ߹ߢ⍮ࠄࠇߡ޿ࠆ㊀޿㔚ሶ♽ߩ‛⾰ߩ㔚ሶ᭴ㅧߪߔߴߡ 3 ᰴర⊛ߢ޽ࠆ㧚㊀޿㔚ሶ♽‛⾰ࠍ⭯⤑ൻߒ㧘ߘߩෘߐࠍ⭯ߊߒߡ޿ߊߎߣ߇ߢ߈ࠇ߫ᰴరᕈࠍ 3 ᰴర߆ࠄ 2 ᰴరߦᄌൻߐߖࠆߎߣ߇಴
᧪ࠆ㧚৻⥸ߦ 2 ᰴర‛⾰ߢߪំࠄ߉ߩലᨐ߇㗼⪺ߣߥࠅ㧘᭽‫⇣ߥޘ‬Ᏹߥᝄࠆ⥰޿߇ᦼᓙߐࠇࠆ㧚㌃㉄ൻ‛㜞᷷⿥વዉ૕ߪ⿥વዉࠍᜂ߁ CuO2 㕙߇⛘✼૕ጀߦ᜽߹ࠇߚᡆ 2 ᰴర⊛ߥ᭴ㅧࠍᜬߜ㧘ߘߩ 2 ᰴరᕈ߇㜞޿ォ⒖᷷ᐲ߿Ᏹવዉ⁁ᘒߢߩ⇣Ᏹ‛ᕈߩේ࿃ߢ޽ࠆߣ⠨߃ࠄࠇߡ޿ࠆ㧚߽ߒ㊀޿㔚ሶࠍૐᰴరⓨ㑆ߦ㐽ߓߎ߼ࠆߎߣ߇ߢ߈ࠇ߫㧘ᣂߒ޿ᒝ⋧㑐㔚ሶߩ⥰บࠍឭଏߔࠆߩߢߪߥ޿߆ߣᦼᓙߢ߈ࠆ㧚ᚒ‫ߪޘ‬ಽሶ✢ࠛࡇ࠲ࠠࠪ࡯ᴺࠍ↪޿ߡ㊀޿㔚ሶ♽ൻว‛ߩੱᎿ⿥ᩰሶࠍ૞⵾ߔࠆߎߣߦࠃࠅ㧘⥄ὼ⇇ߦߪሽ࿷ߒߥ޿ 2 ᰴరߩ㊀޿㔚ሶ♽ࠍߟߊࠅ಴ߔߎߣࠍ⹜ߺߡ޿ࠆ㧚ᧄⓂߢߪ⿥ᩰሶ⭯⤑ߩ૞⵾ߦࠃࠆੱᎿߩ㊀޿㔚ሶ♽ߩ⎇ⓥߩ╙৻ᱠߣߒߡ㧘ᰴరᕈ೙ᓮߦࠃࠆ㔚ሶ⁁ᘒߩᄌൻߦߟ޿ߡႎ๔ߔࠆ[4, 5].
㧚㊀޿㔚ሶ♽⿥ᩰሶ CeIn3/LaIn3 ᧄ⎇ⓥߢߪ Ce ޽ߚࠅ 4f 㔚ሶࠍ 1 ୘ᜬߟ CeIn3 ߣ f 㔚ሶࠍᜬߚߥ޿ LaIn3 ࠍ੤੕ߦⓍጀߒߚੱᎿ⿥ᩰ
ሶߩ૞⵾ࠍⴕߞߚ㧔࿑ 1㧕
㧚CeIn3 ߣ LaIn3 ߪߣ߽ߦ┙ᣇ᥏ߩ Cu3Au ᭴ㅧࠍขࠅ㧘ᩰሶߩࡒࠬࡑ࠶࠴߇
⚂ 1㧑ߣ⿥ᩰሶࠍ૞⵾ߔࠆ⚵ߺวࠊߖߣߒߡߪㆡߒߚ♽ߢ޽ࠆ㧚 CeIn3 ߪࡀ࡯࡞᷷ᐲ TN = 10 K એਅߢ෻ᒝ⏛ᕈ⒎
ᐨࠍ␜ߔ㊀޿㔚ሶ♽෻ᒝ⏛ᕈ૕ߢ޽ࠆ[6, 7]㧚ട࿶ߦࠃࠅ
⏛᳇⒎ᐨߪᛥ೙ߐࠇ㧘2.5 GPa ઃㄭߢ෻ᒝ⏛ᕈ߇ቢోߦᶖ
ᄬߒ㧘⇣ᣇ⊛⿥વዉ߇⃻ࠇࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ. Ᏹ࿶ߢߪ㔚᳇ᛶ᛫₸ Uߩ᷷ᐲଐሽᕈߪㅢᏱߩࡈࠚ࡞ࡒᶧ૕⊛ߥᝄࠆ⥰޿ U = U0 +AT 2 ࠍ␜ߔ߇㧘෻ᒝ⏛ᕈ߇ᶖᄬߔࠆ
2.5 GPa ઃㄭߢߪ U о T 1.6 ߩᝄࠆ⥰޿ࠍ␜ߒ㧘ࡈࠚ࡞ࡒᶧ૕߆ࠄㅺ⣕ߔࠆ[7-8]㧚ߎߩ᷷ᐲଐሽᕈߪ 3 ᰴర⊛ߥ෻ᒝ⏛ᕈំࠄ߉߇ሽ࿷ߔࠆ႐วߦℂ⺰⊛ߦ੍᷹ߐࠇߡ޿ࠆ

U о T 1.5 ߩᝄࠆ⥰޿ߦㄭߊ[9]㧘㜞࿶ਅߩ CeIn3 ߦ߅ߌࠆ⏛᳇⒎ᐨߩᛥ೙ߦ઻߁ 3 ᰴర⊛ߥ෻ᒝ⏛ᕈំࠄ߉ߩ⊒㆐ࠍ␜ໂߒߡ޿ࠆ㧚࿑ 1 ੱᎿ⿥ᩰሶߣ Ce(La)In3 ߩ⚿᥏᭴ㅧㅧ.

㧚⿥ᩰሶߩᚑ㐳 ⭯⤑ߩ⚿᥏ᣇ૏߇න⚿᥏ၮ᧼ߣ৻ቯߩ㑐ଥࠍᜬߞߡో૕ߢឥߞߡᚑ㐳ߒߡ޿ࠆߣ߈㧘ߎࠇࠍࠛࡇ࠲
ࠠࠪࡖ࡞ᚑ㐳ߣ⸒޿㧘ߎߩࠃ߁ߥᚑ㐳ࠍߒߚ⭯⤑ࠍࠛࡇ࠲ࠠࠪࡖ࡞⭯⤑ߣ๭߱㧚㊀޿㔚ሶൻว‛ߩࠛࡇ࠲ࠠࠪࡖ࡞⭯⤑ߩ૞⵾ߦᚑഞߒߚ଀ߪ UPd2Al3[10]UNi2Al3[11]߇ႎ๔ߐࠇߡ޿ࠆߩߺߢ㧘ᄙߊߩࠣ࡞࡯ࡊߢ⹜ߺࠄࠇߡ߈ߚ[10-15]ߦ߽㑐ࠊࠄߕዋߥ޿㧚Ce ࠍ฽߻㊀޿㔚ሶ♽ൻว‛ߩࠛࡇ࠲ࠠࠪࡖ࡞⭯⤑ߦߟ޿ߡߪ㧘ߘߩ㔍ᤃᐲߩ㜞ߐ߆ࠄߎࠇ߹ߢߦ೨଀߇ߥ޿㧚ߎߩᄢ߈ߥℂ↱ߪ Ce ߇ᭂ߼ߡ㉄ൻߒ߿ߔ޿ߎߣߣ㧘ㆡಾߥၮ᧼ࠍߥ߆ߥ߆⷗ߟߌࠆߎߣ߇ߢ߈ߥ߆ߞߚߎߣߢ޽ߞߚ㧚ᧄ⎇ⓥߢߪಽሶ✢ࠛࡇ࠲ࠠࠪ࡯ MBE ᴺࠍ↪޿ߡ Ce ♽ߩ㊀޿㔚ሶൻว‛ߩࠛࡇ࠲ࠠࠪࡖ࡞⭯⤑ߩ૞⵾ࠍⴕߞߚ㧚MBE

4

ᴺߪ⌀ⓨ⫳⌕ᴺߩ৻⒳ߢ޽ࠅ 10-7 Pa ⒟ᐲߩ⿥㜞⌀ⓨൻߢේᢱࠍടᾲ⫳⊒ߐߖ㧘ේሶ߇ઁߩ᳇૕
ಽሶߦᢔੂߐࠇࠆߎߣ߇ߥߊ㧘ࡆ࡯ࡓ⁁ߩಽሶ✢ߣߥࠅၮ᧼ߦ೔㆐ߒ㧘ၮ᧼਄ߢ⚿᥏ᚑ㐳ߔࠆ㧚⿥㜞⌀ⓨߢ޽ࠆߎߣߪ Ce ߩ㉄ൻࠍ㒐ߋߩߦᭂ߼ߡ᦭ലߢ޽ࠆ㧚ၮ᧼ߦߪ CeIn3, LaIn3 ߣᩰሶቯᢙߩࡑ࠶࠴ࡦࠣߩ⦟޿MgF2 ߩ(001)㕙ࠍ↪޿ߚ㧚
MgF2 ߪᱜᣇ᥏ߩ⚿᥏᭴ㅧࠍᜬߜᩰሶቯᢙߪߘ
ࠇߙࠇ a = 0.462 nm, c = 0.305 nm ߢ޽ࠅ a ゲߢ
ߪ Ce(La)In3 ߩᩰሶቯᢙ a = 0.4689(0.4736) nm ߣ߆ߥࠅㄭ޿㧚߹ߚ MgF2 ၮ᧼⴫㕙ߩᐔမᕈࠍะ
਄ߐߖࠆߚ߼㧘Ce(La)In3 ߩ⫳⌕ࠍⴕ߁೨ߦ MgF2ࠍ⫳⌕ߐߖ㧘ၮ᧼ߩᐔမᕈߩะ਄ࠍ࿑ߞߚ㧚࿑
2 ߦ MBE ⵝ⟎ߩᮨᑼ࿑ࠍ␜ߔ㧚MBE ᴺߢߪ৻⥸ߦ⤑ߩᚑ㐳ㅦᐲߪၮ᧼਄߳ߩේሶߩଏ⛎ㅦᐲߦࠃࠅ೙㒢ߐࠇࠆ㧚ේᢱߩടᾲ᷷ᐲࠍ♖ኒߦ೙

࿑ 2 MBE ⵝ⟎ߩ⇛࿑㧚ᓮߔࠆߎߣߦࠃࠅේሶߩଏ⛎ㅦᐲ㧘ߔߥࠊߜ⤑ߩᚑ㐳ㅦᐲࠍૐߊᛥ߃ࠆߎߣ߇ߢ߈㧘
CeIn3 ጀߣ LaIn3 ጀࠍ੤੕ߦⓍጀߐߖࠆࠃ߁ߥᠲ૞߇ታ⃻ߢ߈ࠆ㧚੹࿁ߩੱᎿ⿥ᩰሶߩ૞⵾ߢߪᚑ㐳ㅦᐲࠍ 0.02 nm/sec ⒟ᐲߣߒ㧘CeIn3 ߇ m ጀ㧘 LaIn3 ߇ n ጀ㧘੤੕ߦੱᎿ⿥ᩰሶߢߪ LaIn3 ጀߩෘߺࠍචಽߦᄢ߈ߊߣࠆߎߣߢ CeIn3Ⓧጀߒߚ CeIn3(m)/LaIn3(n)ࠍ૞⵾ߒߚ㧚ጀ㑆ߩ⋧੕૞↪ࠍήߊߔߎߣ߇಴᧪ࠆ㧚ߎߩ⁁ᴫߢߘࠇߙࠇߩ CeIn3 ጀߩෘߺࠍ⭯ߊߔࠆߎߣߦࠃࠅ
㊀޿㔚ሶߩ 2 ᰴర㐽ߓㄟ߼߇น⢻ߣߥࠆ㧚㧚⿥ᩰሶߩ᭴ㅧ ૞⵾ߒߚੱᎿ⿥ᩰሶߢߪ RHEED ߢࠪࡖ࡯ࡊߥࠬ࠻࡝࡯ࠢࡄ
࠲࡯ࡦ߇᷹ⷰߐࠇߚ㧔࿑ 3(a)㧕㧚ߎࠇߪ⭯⤑߇ේሶጀ࡟ࡌ࡞ߢࡈ
࡜࠶࠻ߢ޽ࠅ㧘⚿᥏ゲߩᣇ૏߇⦟ߊឥߞߡ޿ࠆߎߣࠍ␜ߒߡ޿
ࠆ㧚න⚿᥏ၮ᧼ߩ⚿᥏ゲߩᣇ૏ߣ⭯⤑ߩ㕙ౝᣇะߩᣇ૏ߩ㑐ଥࠍ⺞ߴࠆߚ߼㧘ㅒᩰሶⓨ㑆ߦ߅ߌࠆ 2 ᰴరࠬࠠࡖࡦߦࠃࠆࡑ࠶
ࡇࡦࠣࠍⴕߞߚߩ߇࿑ 4 ߢ޽ࠆ㧚MgF2 ၮ᧼ߩ(112)ࡇ࡯ࠢߣੱ
Ꮏ⿥ᩰሶ⤑߆ࠄߩ(113)ࡇ࡯ࠢ߇␜ߐࠇߡ޿ࠆ㧚ਔ⠪ߩ૏⟎㑐ଥ
ߪ MgF2 ၮ᧼ߩ[100]ゲߣੱᎿ⿥ᩰሶ⤑ߩ[100]ゲߩᣇ૏߇ឥߞߡ
޿ࠆߣߒߡ⦟ߊ⺑᣿ߢ߈ࠆ㧚એ਄ߩ⚿ᨐ߆ࠄ Ce ൻว‛⭯⤑ߩࠛࡇ࠲ࠠࠪࡖ࡞ᚑ㐳ߦᚑഞߒ㧘ၮ᧼ߩ[100]ߣ⭯⤑ߩ[100]ゲ߇ឥߞߡ޿ࠆߎߣ߇᣿ࠄ߆ߣߥߞߚ㧚 ᰴߦੱᎿ⿥ᩰሶ᭴ㅧ߇ታ㓙ߦᒻᚑߐࠇߡ޿ࠆߎߣࠍㅀߴࠆ㧚࿑ 3 (a) ౖဳ⊛ߥ RHEED ௝ߣ(b)TEM ߦࠃࠆ⿥ᩰሶߩᢿ㕙ߩࠗࡔ࡯ࠫ㧚

࿑ 4 ߦ␜ߒߚㅒᩰሶࡑ࠶ࡇࡦࠣߦౣᐲᵈ⋡ߒߡ޿ߚߛ߈ߚ޿㧚(113)ࡇ࡯ࠢߩᮮߦ⿒޿⍫ශߢ␜ߒߚዊ
ߐߥࡇ࡯ࠢ߇⃻ࠇߡ޿ࠆ㧚ߎࠇߪࠨ࠹࡜ࠗ࠻ࡇ࡯ࠢߣ๭߫ࠇ㧘⿥ᩰሶ᭴ㅧࠍ෻ᤋߒߚ߽ߩߢ޽ࠆ㧚⭯⤑ߦု⋥ᣇะߩ X ✢࿁᛬ߦߟ޿ߡ߽㧘ᦨ߽ᒝᐲߩᒝ޿(002)෻኿ߣߘߩ๟ࠅߩࠨ࠹࡜ࠗ࠻ࡇ࡯ࠢࠍ᜛ᄢ
ߒߡ࿑ 5 ߦ␜ߔ㧚CeIn3 ጀߩෘߺ߇ m = 1 – 8 ࡙࠾࠶࠻࠮࡞ߩߘࠇߙࠇߦߟ޿ߡ㧘㤥✢߇ታ㛎࠺࡯࠲ࠍ㧘5⿒✢߇ኻᔕߒߚࠪࡒࡘ࡟࡯࡚ࠪࡦࠍ␜ߒߡ޿ࠆ㧚ࠪࡒࡘ࡟࡯࡚ࠪࡦߪ Fullerton ࠄ[16]ߩᚻᴺߢⴕ
޿㧘ฦጀߩෘߺߩ߫ࠄߟ߈ߣጀ㑆ߩ᜛ᢔࠍήⷞ
ߒߡ޿ࠆ㧚ࠨ࠹࡜ࠗ࠻ࡇ࡯ࠢߩ૏⟎ߪ⿥ᩰሶ᭴
ㅧߩᄢ߈ߐߢ᳿߹ࠅ㧘ᄢ߈ߊߥࠆ߶ߤࡔࠗࡦࡇ
࡯ࠢߦㄭߠߊ㧚ੱᎿ⿥ᩰሶ CeIn3(m)/LaIn3(4)ߢ
ߪ CeIn3 ߣ LaIn3 ߇หߓ⚿᥏᭴ㅧࠍᜬߜ㧘Ce ߣ
La ߩේሶᢔੂ࿃ሶ߇߆ߥࠅㄭ޿ߚ߼ࠨ࠹࡜ࠗ
࠻ࡇ࡯ࠢߩᒝᐲߪ߆ߥࠅᒙߊߥࠆ㧚߹ߚ m ߇ዊ
࿑ 4 CeIn3(8)/LaIn3(4)ߩㅒᩰሶⓨ㑆ߦ߅ߌࠆࡑ࠶
ࡇࡦࠣ㧚ߐߊߥࠆ߶ߤᒙߊߥࠆ㧚ߔߴߡߩ႐วߦ߅޿ߡ
ࠪࡒࡘ࡟࡯࡚ࠪࡦߪࠨ࠹࡜ࠗ࠻ࡇ࡯ࠢߩ૏⟎࡮ᒝᐲ౒ߦ⦟ߊౣ⃻ߒߡ߅ࠅ㧘․ߦ m = 8 ߩ႐วߪ 2 ᰴߩࠨ࠹࡜ࠗ࠻ࡇ࡯ࠢ߹ߢ⏕⹺ߔࠆߎߣ߇಴᧪ࠆ㧚ᦝߦ⭯޿ CeIn3(1)/LaIn3(3)ߦ߅޿ߡߪㅘㆊဳ㔚ሶ㗼ᓸ㏜(TEM)ߦࠃࠆ᷹ⷰߢ⋥ធ⊛ߦ⿥ᩰሶ᭴ㅧࠍ᷹ⷰߢ߈ߚ㧚ߘߩ⚿ᨐࠍ࿑ 2(b)ߦ␜ߔ㧚࿑ 2(b)ߢ᣿ࠆ޿ࠬࡐ࠶࠻߇
Ce ේሶߦኻᔕߒߡ߅ࠅ㧘Ce ේሶ߇ੂࠇࠆߎߣߥߊ৻
⋥✢ߦਗࠎߢ޿ࠆߩ߇ಽ߆ࠆ㧚ߎߩࠃ߁ߦ X ✢࿁᛬ߦ߅ߌࠆࠨ࠹࡜ࠗ࠻ࡇ࡯ࠢߣ TEM ߦࠃࠆ᷹ⷰ߆ࠄ࿑ 1ߦ␜ߒߚࠃ߁ߥ⿥ᩰሶ᭴ㅧ߇⸳⸘ㅢࠅߦ಴᧪ߡ޿ࠆߎ
ߣࠍ⏕⹺ߢ߈ߚ㧚ߎߩࠃ߁ߦೋ߼ߡࠛࡇ࠲ࠠࠪࡖ࡞ᚑ
㐳ߒߚ㊀޿㔚ሶ♽ੱᎿ⿥ᩰሶߩ૞⵾ߦᚑഞߒ㧘Ce ൻว‛ጀࠍ 1 ጀ߹ߢ⭯ߊߔࠆߎߣ߇಴᧪ߚ㧚ߎߩߎߣߪ f
㔚ሶ߇ Ce ൻว‛߆ࠄߥࠆ 2 ᰴరᐔ㕙ߦ㐽ߓㄟ߼ࠄࠇ
ߚߎߣࠍᗧ๧ߒߡ޿ࠆ㧚࿑ 5 CeIn3(m)/LaIn3(4) ߩ(002)ࡇ࡯ࠢ๟ࠅߩ
X ✢࿁᛬㧚⿒޿ታ✢ߪኻᔕߒߚࠪࡒࡘ࡟࡯
࡚ࠪࡦࠍ␜ߔ㧚㧚ャㅍଥᢙ᷹ቯ
᭴ㅧ⸃ᨆ߆ࠄੱᎿ⿥ᩰሶ᭴ㅧ߇ታ⃻ߒߡ޿ࠆߎ
ߣࠍ⏕⹺ߔࠆߎߣ߇಴᧪ߚ㧚ᰴߦߘߩ㔚ሶ⁁ᘒࠍ᣿ࠄ߆ߦߔࠆߚ߼ߦૐ᷷߹ߢߩャㅍଥᢙ᷹ቯࠍⴕߞߚ㧚࿑ 6 ߦੱᎿ⿥ᩰሶ CeIn3(1)/LaIn3(4)ߩᮮ⏛᳇ᛶ᛫ߩ⏛႐ⷺᐲଐሽᕈࠍ␜ߔ㧚ᮮ⏛᳇ᛶ᛫ߪ᣿⏕ߥ 2 ࿁ኻ⒓ᕈࠍ␜ߒߡ޿ࠆ㧚2 ࿁ኻ⒓ᕈߩ⿠Ḯߪ⿥ᩰሶ᭴ㅧએ
ᄖߦߪ࿷ࠅᓧߕ㧘ߎߩ⚿ᨐߪャㅍଥᢙ᷹ቯߦ⿥ᩰሶ
᭴ㅧ߆ࠄߩነਈ߇෻ᤋߐࠇߡ޿ࠆߎߣࠍ␜ߒߡ޿ࠆ㧚 ࿑ 7(a)ߦ CeIn3 ⭯⤑ߣੱᎿ⿥ᩰሶ CeIn3(m)/LaIn3(4)(m = 8, 6, 3, 2, 1)ߩ㔚᳇ᛶ᛫₸ߩ᷷ᐲଐሽᕈࠍ␜ߔ㧚࿑ 6 ᮮ⏛᳇ᛶ᛫'U/U0(= UU0U) ߩⷺᐲଐሽᕈ㧚㔚ᵹ࡮⏛႐࡮⚿᥏ゲߩ㑐ଥࠍౝᝌ࿑ߦ␜ߔ㧚ੱᎿ⿥ᩰሶߩ LaIn3 ጀߩෘߺߪ 4 ࡙࠾࠶࠻࠮࡞ߦ࿕ቯߒߚ㧚4 ࡙࠾࠶࠻࠮࡞ߪߥࠇߚ Ce ේሶ㑆ߦ௛ߊ
RKKY ⋧੕૞↪ߪ㓞ࠅว߁႐วߦᲧߴߡ 1 %એਅ߹ߢᷫዋߔࠆ㧚ߘߩߚ߼ CeIn3(m)/LaIn3(4)ߢߪߘࠇߙ
CeIn3 ߩᛶ᛫₸ߪ 50 K ઃㄭ߹ߢ Kondoࠇߩ CeIn3 ጀߩ㑆ߩ⋧੕૞↪ߪ߶߷ή޿ߣ⠨߃ࠆߎߣ߇಴᧪ࠆ㧚

6ലᨐߦࠃࠅ㒠᷷ߣ౒ߦჇᄢߒ㧘ࠦࡅ࡯࡟ࡦ࠻ߥ⁁ᘒࠍᒻᚑߒߚᓟߪᷫዋߔࠆ㧚TN = 10 K ߦ߅޿ߡ෻
ᒝ⏛ᕈ⒎ᐨࠍ෻ᤋߒߚ᛬ࠇᦛࠅ߇⃻ࠇ㧘ᛶ᛫₸ߪᕆㅦߦᷫዋߔࠆ㧚ߎࠇߪ㊀޿㔚ሶ♽෻ᒝ⏛ᕈ૕ߦ߅޿ߡౖဳ⊛ߥᝄࠆ⥰޿ߢ޽ࠅ㧘ࡃ࡞ࠢන⚿᥏ࠍ⦟ߊౣ⃻ߒߡ޿ࠆ㧚ੱᎿ⿥ᩰሶߢ߽ 50 K ઃㄭߦ⃻ࠇࠆᭂᄢߪ m ߩ୯ߦ㑐ࠊࠄߕ⏕⹺ߢ߈ࠆ߇㧘ߘࠇߦട߃ߡ 10 K એਅߩૐ᷷ߢౣ߮㔚᳇ᛶ᛫₸ߩჇᄢ߇⷗ࠄࠇࠆ㧚ߎߩჇᄢߪ⍫ශߦ␜ߔ᷷ᐲߢᷫዋ
ߦォߕࠆ㧚ߎࠇߪ߅ߘࠄߊ㒠᷷ߣ౒ߦ Kondo ലᨐߦࠃࠆᛶ᛫ߩჇᄢ߇⿠߈㧘ᭂᄢ୯ࠍ␜ߔ೨ߦ෻ᒝ
⏛ᕈォ⒖߇⿠ߎࠅ㧘ᛶ᛫₸ߪᷫዋߦォߓߡ޿ࠆߣ
⠨߃ࠄࠇࠆ㧚⹦ߒߊߪㅀߴߥ޿߇㧘⚿᥏႐ಽⵚߩ
ലᨐߦࠃࠅᛶ᛫₸ߦ 2 ߟߩᭂᄢ߇⃻ࠇࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ[17]㧚 CeIn3 ߽ᧄ᧪ߥࠄ߫㔚᳇ᛶ᛫₸ߦ 2 ߟߩᭂᄢࠍᜬߟ߇㧘⏛᳇⒎ᐨߦࠃߞߡૐ᷷஥
ߩᛶ᛫₸ߩᭂᄢߪ㓝ߐࠇߡ޿ߚ㧚ߣߎࠈ߇ੱᎿ⿥
ᩰሶߦ߅޿ߡ TN ߇ᷫዋߒ㧘ૐ᷷ߩᭂᄢ߇㗼ߦߥߞߚ߽ߩߣ⠨߃ࠄࠇࠆ㧚࿑ 7(a)ߦ⍫ශߢ␜ߒߚࠃ߁

࿑ 7 CeIn3 ߣ CeIn3(m)/LaIn3(4) ߩ(a)㔚᳇ᛶ᛫₸ߣ(b)ࡎ࡯࡞ଥᢙߩ᷷ᐲଐሽᕈ㧚TN ࠍ⍫ශߢ␜ߔ㧚ߦ TN ߪ m = 8, 6, 3 ߣ CeIn3 ጀ߇⭯ߊߥࠆߦߟࠇߡᷫዋߒ㧘m = 2, 1 ߢߪ߽ߪ߿⷗ࠄࠇߥ޿㧚߹ߚᱷ⇐ᛶ᛫₸ U0 ߪ CeIn3 ጀ߇⭯ߊߥࠆߦߟࠇߡᄢ߈ߊჇᄢߔࠆ㧚ߎࠇߪ CeIn3 ጀߣ LaIn3 ጀߩጀႺ⇇ߦ߅ߌࠆCe ߣ La ߩ⟎߈឵ࠊࠅߥߤߩੂࠇ߇ᄢ߈ߥᢔੂࠍ
߽ߚࠄߔലᨐߣ㧘෻ᒝ⏛ᕈ߇ᛥ೙ߐࠇࠆߦߟࠇߡ
Ⴧᄢߒߚ⏛᳇ំࠄ߉߇U0 ࠍ᛼ߒ਄ߍࠆലᨐ[18,19]ߩਔᣇ߇ല޿ߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚ࡎ࡯࡞ଥᢙߦ߅޿ߡ߽ห᭽ߦ TN ߩᷫዋ߇᷹ⷰ
ߐࠇߚ㧚࿑ 7(b)ߦࡎ࡯࡞ଥᢙߩ᷷ᐲଐሽᕈࠍ␜ߔ㧚
CeIn3 ߢ⷗ࠄࠇࠆࠃ߁ߦࡎ࡯࡞ଥᢙߪ⽶ߢ޽ࠅ㧘⍫ශߢ␜ߔࠃ߁ߦ TN ߦ߅޿ߡ᣿⍎ߥ᛬ࠇᦛࠅ߇⃻ࠇࠆ㧚TN ߦኻᔕߒߚห᭽ߩ᛬ࠇᦛࠅߪ m = 8, 6, 3
ߢ߽⷗ࠄࠇ㧘CeIn3 ጀ߇⭯ߊߥࠆߦߟࠇߡᷫዋߒߡ
޿߈㧘m = 2, 1 ߢߪ߽ߪ߿᷹ⷰߐࠇߥ޿㧚 CeIn3 ጀߩෘߺ m ߩㅒᢙ 1/m ߦኻߒߡ㔚᳇ᛶ᛫₸߆ࠄ᳿ቯߒߚ TN ࠍࡊࡠ࠶࠻ߒߚ߽ߩ߇࿑ 8(a)ߢ޽ࠆ㧚CeIn3 ጀ߇⭯ߊߥࠅ㧘♽ߩ 2 ᰴరᕈ߇㜞߹ࠆߦߟࠇߡ TN ߪᷫዋߒ㧘m = 2 ઃㄭߢᶖᄬߒߡ޿
ࠆ㧚หᤨߦૐ᷷ߢߩ㔚᳇ᛶ᛫₸ࠍࡈࠚ࡞ࡒᶧ૕ߢ
࿑ 8 (a) CeIn3 ጀߩෘߺߩㅒᢙ 1/m ߦኻߔࠆ TN ߣ A୯ߩଐሽᕈ㧚m = 2 ߦ߅޿ߡߪฦ⏛႐ߢߩ A ୯ࠍ␜ߔ㧚(b) 㔚᳇ᛶ᛫₸ߩ᷷ᐲߩࡌࠠDߩ 1/m ߣ᷷ᐲߦኻߔࠆࠗࡔ࡯ࠫࡊࡠ࠶࠻㧚ᚑࠅ┙ߟ U = U0 +AT 2 ߢࡈࠖ࠶࠻ߒߚߣ߈ߩ A ୯
ߩ 1/m ଐሽᕈࠍ␜ߔ㧚ߎߎߢ A ୯ߪ⁁ᘒኒᐲߩ 2ਸ਼ߦᲧ଀ߔࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ㧚CeIn3 ጀ߇⭯ߊ7ߥࠆߦߟࠇߡ A ୯ߩ㗼⪺ߥჇᄢ߇⷗ࠄࠇࠆߎߣ㧘TN ߇
m = 2 ઃㄭߢᶖᄬߒߡ޿ࠆߎߣ߆ࠄ㧘ᰴరᕈ೙ᓮߦࠃ
ࠆ㊂ሶ⥃⇇ὐ߇ m = 2 ઃㄭߢታ⃻ߒߡ޿ࠆߩߢߪߥ޿
߆ߣ⠨߃ࠄࠇࠆ㧚ߘߩߎߣࠍ⏕߆߼ࠆߚ߼㧘ૐ᷷ߢߩ㔚᳇ᛶ᛫₸ࠍ U = U0 +A’T Dߢࡈࠖ࠶࠻ߒ㧘Dߩ᷷ᐲߣ
1/m ߦኻߔࠆᄌൻࠍࠗࡔ࡯ࠫࡊࡠ࠶࠻ߒߚ߽ߩ߇࿑
8(b)ߢ޽ࠆ㧚CeIn3 ߢߪᐢ޿᷷ᐲ▸࿐ߢࡈࠚ࡞ࡒᶧ૕ߩ

U оT 2 ߇ࠃߊᚑࠅ┙ߞߡ޿ࠆ߇㧘Ce ጀ߇⭯ߊߥࠆߦߟࠇߡࡈࠚ࡞ࡒᶧ૕ߢ⸥ㅀߢ߈ࠆ᷷ᐲ▸࿐ߪ⁜߹ࠅ㧘m = 2 ߦ߅޿ߡߪᐢ޿᷷ᐲ▸࿐ߢ U оT ߇ᚑࠅ┙ߜ㧘ࡈࠚ࡞ࡒᶧ૕ߩᝄࠆ⥰޿߇⎕ࠇߡ޿ࠆ㧚࿑ 9(a)ߦ
CeIn3(2)/LaIn3(4)ߩૐ᷷ߦ߅ߌࠆᛶ᛫₸ࠍ␜ߔ㧚ታ✢ߪ⋥✢ߦࠃࠆࡈࠖ࠶࠻ߢ޽ࠅ U оT ߢࠃߊࡈࠖ࠶࠻ߐࠇ
ࠆߎߣ߇ࠊ߆ࠆ㧚ߎߎߢട࿶ߦࠃࠅ⏛᳇⒎ᐨ߇ᶖᄬߒ
ߚ႐วߪ 3 ᰴరߩ෻ᒝ⏛ᕈࠁࠄ߉ߦ․ᓽ⊛ߥ U оT 1.5
ߦㄭ޿ᝄࠆ⥰޿߇⃻ࠇߡ޿ߚߎߣߦᵈᗧߐࠇߚ޿[7,8]㧚ߎࠇߦኻߒߡ CeIn3(2)/LaIn3(4)ߢߪ 2 ᰴర෻ᒝ⏛ᕈ
ំࠄ߉ߦ․ᓽ⊛ߥ U оT ߩ᷷ᐲଐሽᕈߣߥߞߡ޿ࠆ㧚ᦝߦૐ᷷ߢߪ⍫ශߢ␜ߔࠃ߁ߦ TN = 0.14 K ߦ߆ߔ߆

࿑ 9 (a) CeIn3(2)/LaIn3(4)ߩ࠯ࡠ⏛႐ߢߩ㔚᳇ᛶ᛫₸ߣ (b) ⏛႐ਅߢߩ㔚᳇ᛶ᛫₸㧚ߥ᛬ࠇᦛࠅ߇⃻ࠇߡ߅ࠅ㧘෻ᒝ⏛ᕈ⒎ᐨ߇ࠊߕ߆ߦᱷߞߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚 ࡈࠚ࡞ࡒᶧ૕⊛ᝄࠆ⥰޿߇⎕ࠇߚ㊀޿㔚ሶ♽ൻว‛ߦ⏛႐ࠍශടߔࠆߣࡈࠚ࡞ࡒᶧ૕ߩᝄࠆ⥰޿߇ᓳᵴߔࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ[2, 18, 20]㧚CeIn3(2)/LaIn3(4)ߦ⏛႐ࠍශടߒߚߣ߈ߩᛶ᛫₸ߩ᷷ᐲଐሽᕈࠍ T 2 ߦኻߒߡࡊࡠ࠶࠻
ߒߚ߽ߩ߇࿑ 9 (b)ߢ޽ࠆ㧚ੱᎿ⿥ᩰሶߦ߅޿ߡ߽⏛႐ߩჇᄢߣ౒ߦࡈࠚ࡞ࡒᶧ૕ߩᝄࠆ⥰޿߇ᓳᵴߒ㧘A ୯ߪᷫዋߔࠆߣ޿߁ㅢᏱߩ㊀޿㔚ሶ♽ൻว‛ߣหߓᝄࠆ⥰޿ࠍ␜ߔ㧚ߘࠇߙࠇߩ⏛႐ߦ߅ߌࠆ A ୯
ࠍ࿑ 8(a)ߦ␜ߔ㧚⏛႐ߦࠃࠆࡈࠚ࡞ࡒᶧ૕ߩᓳᵴߪ․ᓽ⊛ߥ U оT ߩ᷷ᐲଐሽᕈ߇ 2 ᰴర෻ᒝ⏛ᕈំࠄ߉ߦࠃࠆ߽ߩߢ޽ࠆߎߣࠍ␜ߒߡ޿ࠆ㧚ߎߩࠃ߁ߦ㊀޿㔚ሶ♽ൻว‛ߩੱᎿ⿥ᩰሶࠍ↪޿ߡ㧘ᰴరᕈ೙ᓮߦࠃࠆ㊂ሶ⥃⇇ὐߣ 2 ᰴర Kondoᩰሶߩታ⃻ߦᚑഞߒߚ㧚㧚⚳ࠊࠅߦ ᧄ⎇ⓥߢߪ MBE ᴺߦࠃࠆᏗ࿯㘃ൻว‛ߩࠛࡇ࠲ࠠࠪࡖ࡞⭯⤑ߩ⵾⤑ᚻᴺࠍ㐿⊒ߒ㧘㊀޿㔚ሶ♽෻ᒝ⏛ᕈ૕ CeIn3 ߣㅢᏱߩ㕖⏛ᕈ㊄ዻߢ޽ࠆ LaIn3 ࠍⓍጀᚑ㐳ߐߖߚੱᎿ⿥ᩰሶߩ૞⵾ߦᚑഞߒߚ㧚߹ߚ૞⵾ߒߚੱᎿ⿥ᩰሶߦ߅޿ߡ f 㔚ሶߩᰴరᕈࠍ 3 ᰴర߆ࠄ 2 ᰴరߦ೙ᓮߢ߈ࠆߎߣࠍ␜ߒߚ㧚♽ߩᰴ
రᕈ߇ 2 ᰴరߦㄭߠߊߦߟࠇ෻ᒝ⏛ᕈ⒎ᐨߪᛥ೙ߐࠇ㧘વዉ㔚ሶߩ᦭ല⾰㊂ߪᄢ߈ߊჇᄢߒߚ㧚෻ᒝ⏛ᕈ⒎ᐨ߇ቢోߦᶖᄬߔࠆઃㄭߢߪ㧘ߘߩ㔚ሶ⁁ᘒߪㅢᏱߩࡈࠚ࡞ࡒᶧ૕߆ࠄᄖࠇ㧘2 ᰴర෻ᒝ⏛ᕈំࠄ߉߇ᄢ߈޿႐วߦᦼᓙߐࠇࠆᝄࠆ⥰޿߇⷗ࠄࠇࠆߥߤ㊂ሶ⥃⇇⊛ߥ⃻⽎߽᷹ⷰߐࠇߚ㧚ߎߩࠃ߁ߥ 2 ᰴరߦ㐽ߓߎ߼ࠄࠇߚ㊀޿㔚ሶ♽߇ߤߩࠃ߁ߥᝄࠆ⥰޿ࠍ␜ߔ߆ࠍ⹦⚦ߦ⺞ߴࠆߎߣߪ੹ᓟߩ⺖㗴ߢ޽ࠆ㧚㘃ૃߒߚ 2 ᰴర♽ߢߩ㊂ሶ⥃⇇⊛ߥᝄࠆ⥰޿ߪࠣ࡜ࡈࠔࠗ࠻਄ߦๆ⌕ߐࠇߚ 2 ᰴరߩ 3He
ߦ߅޿ߡ߽᷹ⷰߐࠇߡ߅ࠅ⥝๧߇ᜬߚࠇࠆ[21]㧚੹ᓟߪඨዉ૕⭯⤑ߩಽ㊁ߢ⊒㆐ߒߚᓸ⚦ടᎿᛛⴚࠍ
ᔕ↪ߒߚ㊀޿㔚ሶ♽ߩ࠽ࡁടᎿ㧘⇣ᣇ⊛⿥વዉࠍ␜ߔ㊀޿㔚ሶ♽‛⾰ߩ⭯⤑ൻੱᎿ⿥ᩰሶൻߦࠃࠆᣂ

8ߒ޿⇣ᣇ⊛⿥વዉߩታ⃻ߥߤ㧘ᣂߚߥ⊒ዷࠍ⋡ᜰߒߚ޿㧚 ߎߩ⎇ⓥߪᧄቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ ኹ᎑ቁੳᢎ᝼㧘ℂቇ⎇ⓥ⑼‛ℂቇ╙৻ᢎቶ ᧻↰␭มᢎ᝼㧘⦼ౝቁ⑓ಎᢎ᝼㧘ฬฎደᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼‛ℂቇᢎቶ ⚬⼱ᶈಎᢎ᝼, ߥࠄ߮ߦᧄቇℂቇ⎇ⓥ⑼‛ℂቇ╙৻ᢎቶ ᳓਄㓶ᄥ᳁㧘቟৻᮸᳁㧘ട⮮ᥓᚑ᳁ߣߩ౒ห⎇ⓥߢߔ㧚ߎߎߦᗵ⻢ߩᗧࠍ⴫ߒ߹
ߔ㧚ߎߩ⎇ⓥߪ⑼ቇ⎇ⓥ⾌⵬ഥ㊄ߣࠣࡠ࡯ࡃ࡞ COE ࡊࡠࠣ࡜ࡓ‫ޟ‬᥉ㆉᕈߣഃ⊒ᕈ߆ࠄ⚜ߋᰴ਎ઍ‛ℂቇ‫ߩޠ‬េഥࠍฃߌߡⴕࠊࠇ߹ߒߚ㧚ෳ⠨ᢥ₂
[1] ਄↰๺ᄦ㧘ᄢ⽾ᖳ⌬: ‫ޡ‬㊀޿㔚ሶ♽ߩ‛ℂ‫⪇⵷(ޢ‬ᚱ㧘1998)㧚
[2] P. Gegenwart, Q. Si, F. Steglich, Nat. Phys. , 186 (2008).
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[9] T. Moriya, K. Ueda, Adv. Phys. , 555 (2000).
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[12] D. Groten et al., Phys. Rev. B , 144425(2001).
[13] M. Huth et al., J. Cryst. Growth , 203 (2001).
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[15] A. G. Zaitsev et al., Physica C  52(2009).
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⪺⠪⇛ᱧ ባᚭ ኡ᣿㧔Hiroaki Shishido㧕੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ ․છഥᢎ1978 ᐕ ፉᩮ⋵↢߹ࠇ
2000 ᐕ ᐢፉᄢቇℂቇㇱ‛ᕈቇ⑼ත
2002 ᐕ ᄢ㒋ᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼‛ℂቇኾ᡹ୃ჻⺖⒟ୃੌ
2005 ᐕ ᄢ㒋ᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼‛ℂቇኾ᡹ඳ჻⺖⒟ୃੌ
2005 ᐕ ᣣᧄቇⴚᝄ⥝ળ․೎⎇ⓥຬ(PD)2009 ᐕ ੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯․છഥᢎ (⃻⡯)

9㋕♽⿥વዉ૕ 1111 ♽ߣ 122 ♽ߦ߅ߌࠆᩭ⏛᳇౒㡆 (NMR)
NMR study on the 1111 and 122 iron pnictide superconductorsਛ੗␭੺੩ㇺᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼, JST-TRIP
Yusuke Nakai
Graduate School of Science, Kyoto University, JST-TRIP
Spin dynamics and superconducting properties in the 1111 and 122 iron pnictides high-temperature
superconductors have been investigated via nuclear magnetic resonance (NMR) technique. Althoughunconventional superconducting gaps in these materials have been inferred from the temperature dependence ofthe nuclear spin-lattice relaxation rate T1-1, their superconducting gap structures likely differ each other. We also
discuss correlations between spin fluctuations and superconductivity in these materials.
㧝㧚ߪߓ߼ߦ
2008 ᐕߩ᧲੩Ꮏᬺᄢቇ⚦㊁ࠣ࡞࡯ࡊߦࠃࠆ㋕♽㜞᷷⿥વዉ૕ LaFeAs(O1-xFx)ߩ⊒⷗એ᧪[1], ㋕♽⿥વዉ૕⎇ⓥߪ਎⇇ਛߢᵴ⊒ߦ➅ࠅᐢߍࠄࠇߡ޿ࠆ. ㋕♽⿥વዉ⎇ⓥ߇ߎࠇ߶ߤ⋓ࠎߦߥߞߚℂ↱ߩ߭ߣߟߣߒߡ, ⏛ᕈర⚛ߩౖဳ଀ߢ޽ࠆ‫ޟ‬㋕‫ࠍޠ‬฽߻ൻว‛߇, ᦨᄢߢ 55 K ߽ߩ㜞޿⿥વዉォ⒖᷷ᐲ Tc
ࠍ␜ߔߣ޿߁න⚐ߥ㛳߈߇ᄢ߈޿ߣᕁ߁[2]. ╩⠪ࠄߪ߆ߨߡ߆ࠄ㋕ర⚛ࠍ฽߻ൻว‛߇␜ߔ⿥વዉߦ
⥝๧ࠍᛴ޿ߡ߅ࠅ, ㋕♽⿥વዉ૕ߣหߓ⚿᥏᭴ㅧࠍ߽ߜ Tc ߇ 4 K ⒟ᐲߩ⿥વዉ૕ LaFePO[3]߇ 2006 ᐕߦ⊒⷗ߐࠇߚߎࠈ߆ࠄ, ⚦㊁ࠣ࡞࡯ࡊߣ౒ห⎇ⓥࠍ㐿ᆎߒߚ⚻✲߇޽ࠆ. ߘߩᓟ, ╩⠪ࠄߪ㋕♽⿥વዉ૕ߩਛߢ߽ 1111 ♽ߣ 122 ♽ߣ๭߫ࠇࠆ⚿᥏᭴ㅧࠍ߽ߟ㋕♽⿥વዉ૕ߦ⌕⋡ߒߡ⎇ⓥࠍⴕߞߡ߈ߚ
[4-7]. ᧄⓂߢߪ, 1111 ♽ߣ 122 ♽ߦ߅ߌࠆ╩⠪ࠄߩᩭ⏛᳇౒㡆(NMR)ታ㛎ߩ⚿ᨐࠍਛᔃߦ⚫੺ߔࠆ߇,㋕♽⿥વዉߩ✚⺑ߪ㇌ᢥ, ⧷ᢥࠍ฽߼ߡᢙᄙߊ಴ ߐࠇߡ߅ࠅ, ߐࠄߦ⹦ߒ޿⸃⺑ࠍ᳞߼ࠆᣇߪᧄⓂ
ߩෳ⠨ᢥ₂ࠍෳᾖߒߡ޿ߚߛ߈ߚ޿[8]. ᧄⓂࠍ⺒ࠎߢ㋕♽⿥વዉߩᜬߟ㕙⊕ߐߦߟ޿ߡ⥝๧ࠍᜬߞߡ
޿ߚߛߌࠇ߫ᐘ޿ߢ޽ࠆ. ߥ߅, ᧄ⎇ⓥߪ࿕૕㊂ሶ‛ᕈ⎇ⓥቶߩ⍹↰ᙗੑᢎ᝼, ർᎹବ૞᳁, ኅື਽᳁ߣ, ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ߩ═ේᚑඳ჻, ኹ᎑ቁੳᢎ᝼, ࿕૕㔚ሶ‛ᕈ⎇ⓥቶߩ᧻↰␭มᢎ᝼, ⦼ౝቁ⑓ಎᢎ᝼, ᧲੩Ꮏᬺᄢቇߩ⚦㊁⑲㓶ᢎ᝼, ᐔ㊁ᢎ᝼, ␹ේ㓁৻ඳ჻ߣߩ౒ห⎇ⓥߦࠃߞߡᓧࠄࠇ
ߚ߽ߩߢ޽ࠆ.
㧞㧚㋕♽⿥વዉ૕ߩ⚿᥏᭴ㅧߣ㔚ሶ⁁ᘒ
࿑ 1 ߦ, ㋕♽⿥વዉ૕ߩ߁ߜ⋓ࠎߦ⎇ⓥߐࠇߡ߈ߚ 4 ߟߩ⚿᥏᭴ㅧࠍ␜ߔ. ߘࠇࠄߪ 1111 ♽(RFeAsO, R = Ꮧ࿯㘃ర⚛), 122 ♽ (AFe2As2, A = Ca, Sr, Ba), 111 ♽ (BFeAs, B = Na, Li), 11 ♽ (FeCn, Cn =S, Se, Te) ߣ๭߫ࠇࠆ. ࿑ 1 ߆ࠄࠊ߆ࠆࠃ߁ߦ Fe-࠾ࠢ࠻ࠥࡦర⚛(P, As ߥߤ)߽ߒߊߪࠞ࡞ࠦࠥࡦర⚛
(Se, Te ߥߤ)߆ࠄߥࠆጀࠍ౒ㅢߒߡ฽ߺ, ߎߩ♽ߩਥᓎߢ޽ࠆ㋕ේሶߪጀౝߢੑᰴరᱜᣇᩰሶࠍߥߔ.
ߎࠇࠄߩጀߪ c ゲᣇะߦⓍጀߒ, ੑᰴరᕈߩ㜞޿⚿᥏᭴ㅧࠍ߽ߞߡ޿ࠆ߇, ߎߩੑᰴరᕈߪ㔚ሶ᭴ㅧ

10

(a)

(b)

(c)

(d)

࿑ 1 (a)1111 ♽ RFeAsORᏗ࿯㘃 (b)122 ♽ AFe2As2A = Ca, Sr, Ba (c)111 ♽ BFeAs, B = Na,Li (d)11 ♽ FeCn, Cn = S, Se, Te ߩ⚿᥏᭴ㅧ⿒ਣ߇㋕ర⚛ࠍࠝ࡟ࡦࠫ⦡߇࠾ࠢ࠻ࠥࡦ P, As, Sb ߅ࠃ߮ࠞ࡞ࠦࠥࡦ S, Se, Te ర⚛ࠍ✛߇Ꮧ࿯㘃ర⚛ࠍ⴫ߔ

࿑ 2 LaFeAsO ߩ(a)ࡈࠚ࡞ࡒ㕙ߣ(b)⁁ᘒኒᐲߩࠛࡀ࡞ࠡ࡯ଐሽᕈ[9]*ὐ๟ࠅߩࡎ࡯࡞㕙ߣ M ὐ߹ࠊࠅߩ㔚ሶ㕙߆ࠄߥࠆࡑ࡞࠴ࡃࡦ࠼♽ߢ޽ࠅ*M ὐࠍ⚿߱ࡀࠬ࠹ࠖࡦࠣ߇ࠃ޿(b)ߩ✛⎕✢ߪ㋕ߩ d㔚ሶߩ⁁ᘒኒᐲ߳ߩነਈࠍ⴫ߒࡈࠚ࡞ࡒḰ૏ ⿒✢ ߦ߅ߌࠆ⁁ᘒኒᐲߩᄢㇱಽࠍභ߼ࠆߎߣ߆ࠄࠊ
߆ࠆࠃ߁ߦ㋕ߩ d 㔚ሶ߇‛ᕈࠍᡰ㈩ߒߡ޿ࠆ

ߦ߽෻ᤋߐࠇߡ߅ࠅ, ࿑ 2(a)߇␜ߔࠃ߁ߦᄢㇱಽߩࡈࠚ࡞ࡒ㕙ߪࠪ࡝ࡦ࠳࡯⁁ߣߥߞߡ޿ࠆ. ߹ߚ࿑2(b)ߦ␜ߔࠃ߁ߦ, ࡃࡦ࠼⸘▚[9]ߩ⚿ᨐߪ㋕ߩ 3d 㔚ሶ߇ࡈࠚ࡞ࡒ㕙਄ࠍභ߼ࠆߎߣࠍ␜ߒߡ߅ࠅ, ㋕߇߹ߐߒߊߎߩ♽ߩਥᓎߢ޽ࠆߎߣ߇ࠊ߆ࠆ. ࡈࠚ࡞ࡒ㕙ߪⶄᢙߩࡎ࡯࡞㕙ߣ㔚ሶ㕙߆ࠄߥࠆࡑ࡞࠴
ࡃࡦ࠼♽ߢ޽ࠅ, ㌃㉄ൻ‛⿥વዉ૕ߢߺࠄࠇࠆࠪࡦࠣ࡞ࡃࡦ࠼ߩࡈࠚ࡞ࡒ㕙ߣߪኻᾖ⊛ߢ޽ࠆ. ߎߩࡑ࡞࠴ࡃࡦ࠼ᕈߦ⿠࿃ߒߡ, ࡎ࡯࡞㕙ߣ㔚ሶ㕙ߩ㑆ߩࡀࠬ࠹ࠖࡦࠣ߇ࠃ޿ߎߣ߇ᜰ៰ߐࠇߡ޿ࠆ. ࡀࠬ࠹ࠖࡦࠣߣߪ, ᵄᢙⓨ㑆ߦ߅޿ߡ৻ᣇߩࡈࠚ࡞ࡒ㕙ࠍࡌࠢ࠻࡞ 4 ߛߌേ߆ߒߚᤨߦ᦭㒢ㇱಽ߇㊀ߥࠆߎߣࠍᜰߒ, ߘߩᵄᢙࡌࠢ࠻࡞ ࡀࠬ࠹ࠖࡦࠣࡌࠢ࠻࡞ ߦኻᔕߒߚ⏛ൻ₸F(4)߇Ⴧᄢߔࠆ. ࿑ 2(a)߆ࠄ, *ὐ߹ࠊࠅߩࡎ࡯࡞㕙ߣ M ὐ߹ࠊࠅߩ㔚ሶ㕙ߩ㑆ߩࡀࠬ࠹ࠖࡦࠣ߇ࠃ޿ߎߣ߇ࠊ߆ࠆ.
㧟㧚㋕♽⿥વዉ૕ߩ⋧࿑㋕♽⿥વዉ૕ߢߪ, ࿑ 3 ߦ␜ߔࠃ߁ߦ⋧࿑਄ߢ෻ᒝ⏛ᕈ⋧ߣ⿥વዉ⋧߇㓞ធߒߡ߅ࠅ, ㌃㉄ൻ‛߿㊀޿㔚ሶ♽ߣ޿ߞߚᒝ⋧㑐♽‛⾰ߦᐢߊ⷗ࠄࠇࠆ⋧࿑ߣ㘃ૃߒߡ޿ࠆ. ㋕♽⿥વዉߩ⋧࿑਄ߢߪ㜞᷷ߩ tetragonal ⋧߆ࠄૐ᷷ߩ orthorhombic ⋧߳ߩ᭴ㅧ⋧ォ⒖ࠍ⿠ߎߒߚߩߜ(࿑ 3 ߩ T0), ࠬ࠻࡜ࠗࡊဳߩ
෻ᒝ⏛ᕈࠍ␜ߔ[10] 11 ♽ߢߪ⇣ߥࠆࠬࡇࡦ㈩೉߇ᚑࠅ┙ߟߣߩႎ๔߽޽ࠆ[11] . 122 ♽ߣ 1111 ♽ߩ⋧࿑ߩ㆑޿ߦߟ޿ߡ⌕⋡ߔࠆߣ, 122 ♽ߢߪ᭴ㅧ⋧ォ⒖ߣ෻ᒝ⏛ᕈ⒎ᐨ߇หߓ᷷ᐲߢ,ߒ߆߽᷷ᐲߦ㑐ߒ

11

(a)

(b)

70

5FeAs(O1-xFx)

7N
7N
7N

70

(Ba1-xKx)Fe2As2
7N
AF

P concentration

࿑3 (a)1111♽RFeAs(O,F) (R = La, Ce, Sm)[14]ߣ(b)122♽ߩ╬ଔᢙ⟎឵♽BaFe2(As,P)2 [15]ߩ⋧࿑AF
ߪ෻ᒝ⏛ᕈ⋧ࠍSCߪ⿥વዉ⋧ߢ޽ࠆߎߣࠍ␜ߔT0(TN)ߪ᭴ㅧ⋧ォ⒖ ෻ᒝ⏛ᕈ ᷷ᐲࠍᜰߔ1111♽ߢߪ⇣ߥࠆᏗ࿯㘃ߩ⿥વዉ⋧࿑ߦߪ♽⛔ᕈ߇ߥ޿ࠃ߁ߦ⷗߃ࠆLa♽ߦ㑐ߒߡߪࡈ࠶⚛Ớᐲߦኻߒߡ᭴ㅧ⋧ォ⒖ߣ෻ᒝ⏛ᕈォ⒖߇৻ᰴォ⒖⊛ߦᶖᄬߔࠆ122♽ߢߪ৻⥸ߦర⚛⟎឵ߦኻߒߡ᭴ㅧ⋧ォ⒖ߣ෻ᒝ⏛ᕈォ⒖ߪㅪ⛯⊛ߦᶖᄬߒߡ޿߈⋧Ⴚ⇇ઃㄭߢ⿥વዉォ⒖᷷ᐲTc߇ᦨᄢ୯ࠍߣࠆ

ߡ৻ᰴォ⒖⊛ߦ⿠ߎࠆ৻ᣇߢ, 1111 ♽ߢߪਔ⠪߇ 10 K ⒟ᐲ㔌ࠇߡ߅ࠅ, ᷷ᐲߦኻߒߡㅪ⛯⊛ߥੑᰴ⋧
ォ⒖ࠍ⿠ߎߔ. ߹ߚ࿑ 3(a)߆ࠄ߽ࠊ߆ࠆࠃ߁ߦ, 1111 ♽ߩਛߢ߽⋧࿑ߦ㆑޿߇⷗ࠄࠇࠆ߇, ߎࠇ߇ᧄ⾰⊛ߥ߽ߩߥߩ߆, ⹜ᢱߩ⾰ߦࠃࠆ߽ߩߥߩ߆ 1111 ♽ߩන⚿᥏⹜ᢱߩวᚑߪ৻⥸ߦ࿎㔍ߢ޽ࠆ ߪ, ੹ᓟߩ⎇ⓥߩㅴዷ߇ᓙߚࠇࠆ. ․ߦ LaFeAs(O,F)ߦᵈ⋡ߔࠆߣ, ᭴ㅧ⋧ォ⒖࡮෻ᒝ⏛ᕈ߇, ࡈ࠶⚛⟎឵ߦኻߒߡ৻ᰴォ⒖⊛ߦᶖᄬߒߚߩߜ⿥વዉ߇⃻ࠇࠆ[12]. ኻᾖ⊛ߦ, 122 ♽ߢߪ৻⥸ߦ᭴ㅧ⋧ォ⒖࡮෻ᒝ
⏛ᕈォ⒖ߣ߽ߦ⟎឵ߦኻߒߡㅪ⛯⊛ߦᄌൻߒ, ⋧Ⴚ⇇ߢᦨᄢߩ⿥વዉォ⒖᷷ᐲ߇ႎ๔ߐࠇߡ޿ࠆ[13].
㧠㧚⿥વዉࠡࡖ࠶ࡊߩኻ⒓ᕈ
਄ㅀߩࠃ߁ߥ⏛ᕈ⋧ㄭறߩ⿥વዉ⋧ߩሽ࿷ߪ, ෻ᒝ⏛ᕈࠁࠄ߉ࠍᇦ੺ߣߒߚ⿥વዉኻᒻᚑࠍㅪᗐߐ
ߖࠆ. ታ㓙, ㋕♽⿥વዉ⊒⷗ߩ⋥ᓟ߆ࠄ㔚ሶ㕙ߣࡎ࡯࡞㕙ࠍߟߥߋࡀࠬ࠹ࠖࡦࠣࡌࠢ࠻࡞ߩᣇะߢߩ
෻ᒝ⏛ᕈࠬࡇࡦࠁࠄ߉ࠍᇦ੺ߦߒߚ⿥વዉߩℂ⺰߇ឭ಴ߐࠇߡ޿ࠆ[16, 17]. ߎࠇࠄߩℂ⺰ߢߪ, ࡎ࡯࡞㕙ߣ㔚ሶ㕙ߩ㑆ߢ⿥વዉࠡࡖ࠶ࡊߩ╓ภߪ෻ォߒߡ޿ࠆ߽ߩߩ, ࡈࠚ࡞ࡒ㕙਄ߩࠡࡖ࠶ࡊߦࡁ࡯࠼
ࠍᜬߚߥ޿ࡈ࡞ࠡࡖ࠶ࡊߩ⿥વዉߢ޽ࠆ sr⁁ᘒߣ๭߫ࠇࠆ㕖ᓥ᧪ဳ⿥વዉߩน⢻ᕈ߇ᜰ៰ߐࠇߡ޿
ࠆ. ߐࠄߦ, ᦨㄭߩℂ⺰ߢߪ࠾ࠢ࠻ࠥࡦర⚛ߣ㋕ᱜᣇᩰሶ㕙ߣߩ〒㔌߇ዊߐߊߥࠆߎߣߢ, sr⁁ᘒߢ߽㔚ሶ㕙ߦࡁ࡯࠼߇౉ࠅ Tc ߽ᷫዋߔࠆߎߣ߇␜ໂߐࠇߡ޿ࠆ[18].
㧚ታ㛎⚿ᨐ ̆ LaFe(As1-xOx)ߦ߅ߌࠆ NMRߎߎ߆ࠄߪ⪺⠪ࠄߩ NMR ታ㛎⚿ᨐߦߟ޿ߡ⚫੺ߔࠆ. NMR ታ㛎ߢߪ‛⾰ਛߩ⏛᳇ബ⿠ߩᕈ⾰ࠍ㔚ሶߩേ⊛⏛ൻ₸ߩૐࠛࡀ࡞ࠡ࡯ᚑಽߦ㑐ଥߔࠆ㊂ߢ޽ࠆ, ᩭࠬࡇࡦᩰሶ✭๺₸ T1-1 ߆ࠄ⍮ࠆߎߣ߇ߢ
߈ࠆ. ߪߓ߼ߦ, LaFeAs(O1-xFx)ߦ߅ߌࠆ(T1T)-1 ߩࡈ࠶⚛Ớᐲଐሽᕈࠍ࿑ 4 ߦ␜ߔ[5, 6]. Უ‛⾰
LaFeAsO ߢߪ, ૐ᷷ߦะ߆ߞߡჇᄢߔࠆ(T1T)-1 ߆ࠄࠊ߆ࠆࠃ߁ߦ, 㗼⪺ߥ෻ᒝ⏛ᕈࠁࠄ߉ߩ⊒㆐߇᷹ⷰߐࠇ, ෻ᒝ⏛ᕈォ⒖᷷ᐲߦ⋧ᒰߔࠆ⚂ 140 K ߢࡇ࡯ࠢࠍ߽ߟ. Უ‛⾰ߢ⷗ࠄࠇߚ෻ᒝ⏛ᕈࠁࠄ߉ߪ,ࡈ࠶⚛⟎឵ߣߣ߽ߦᕆỗߦᛥ߃ࠄࠇ, ෻ᒝ⏛ᕈࠍ␜ߐߕ⿥વዉࠍ⿠ߎߔ⚵ᚑ(x ҆0.07)ߢߪ㗼⪺ߥ෻ᒝ⏛ᕈࠁࠄ߉ߩᚑ㐳ߪ⷗ࠄࠇߥ޿. ․ߦ, Tc ߇ᦨ߽㜞ߊߥࠆ⚵ᚑߩ x = 0.11 ߢߪ, ㅢᏱߩ㊄ዻߢ⷗ࠄࠇࠆ

12ࠦ࡝ࡦࡂೣ (T1T = ৻ቯ)ߦ߽ᓥࠊߕ, (T1T)-1ߩ୯ߪ᷷ᐲߩૐਅߣߣ߽ߦᷫዋߔࠆ. ߎߩࠃ߁ߦࡈ࠶⚛Ớᐲ߇ x = 0.04 ߆ࠄ 0.11 ߹ߢᄌൻߒߚߣ߈ߦ, Ᏹવዉ⁁ᘒߩ(T1T)-1 ߩ୯߇ᄢ߈

AFM

PseudogapSCߊᄌൻߔࠆߦ߽㑐ࠊࠄߕ, Tc (࿑ 4 ߩ⍫ශ) ߪ߶߷৻ቯ୯ࠍߣࠆ. ߎߩ⚿ᨐߪ, Ᏹવዉ⁁ᘒߦ߅ߌࠆૐࠛࡀ࡞ࠡ࡯ߩ෻ᒝ⏛ᕈࠁࠄ߉ߣ⿥
વዉߦߪ᣿⏕ߥ⋧㑐߇⷗ࠄࠇߥ޿ߎߣࠍ␜ߒ
ߡ߅ࠅ, ෻ᒝ⏛ᕈࠁࠄ߉ᇦ੺ߩ⿥વዉߣ޿߁
ឬ௝ߣߪว⥌ߒߥ޿ࠃ߁ߥ⚿ᨐߣ޿߃ࠆ.
৻ᣇ, ࿑ 5 ߦ␜ߔࠃ߁ߦ⿥વዉ⁁ᘒߦ㑐ߒߡߪ, ㅢᏱߩ s ᵄ⿥વዉߦ․ᓽ⊛ߥ Tc ⋥ਅߩT1-1 ߩჇᄢ ࠦࡅ࡯࡟ࡦࠬࡇ࡯ࠢ ߿ Tc ࠃࠅචಽૐ᷷ߢߩ T1-1 ߩᜰᢙ㑐ᢙ⊛ߥᷫዋߪ⷗ࠄࠇ
ߕ, ૐ᷷ߢ T1-1оT 3 ⊛ߦᝄࠆ⥰߁ߎߣ߇ࠊ߆
ߞߚ. ߎࠇߪ LaFeAs(O,F)߇㕖ᓥ᧪ဳߩ⿥વ
ዉ૕ߢ޽ࠆߎߣࠍᒝߊ␜ໂߔࠆ⚿ᨐߢ޽ࠆ࿑4 ᭽‫⚛࠶ࡈߥޘ‬ỚᐲߢߩLaFeAs(O1-xFx)ߩ(T1T)-1ߩ᷷ᐲଐሽᕈᝌ౉࿑ߪLaFeAs(O1-xFx)ߩ⋧࿑ࠍ⴫ߔ⍫ශߪTcࠍ⴫ߒTNߪ෻ᒝ⏛ᕈ⒎ᐨ᷷ᐲࠍx =0.07ߦኻߔࠆT*ߪ(T1T)-1 ߇ᷫዋߒߪߓ߼ࠆ᷷ᐲࠍ⴫
ߔ⎕✢߅ࠃ߮ὐ✢ߪ(T1T)-1= a + b exp(-'/T)ࠍ⴫ߒ
x  11%ߢߎߩᝄࠆ⥰޿ߪ㗼⪺ߦߥࠆ ᝌ౉࿑ߢ“Pseudogap”ߣ⴫ߐࠇߡ޿ࠆ ห᭽ߥ⚿ᨐߪઁߩታ㛎ࠣ࡞࡯ࡊ߆ࠄ߽ႎ๔
ߐࠇߡ޿ࠆ[19-22] . ⿥વዉ⁁ᘒߢߩߎߩࠃ
߁ߥ T1-1 ߩᝄࠆ⥰޿ߪ, ㌃㉄ൻ‛߿㊀޿㔚ሶ♽⿥વዉ૕ߢ⷗ࠄࠇࠆ࡜ࠗࡦࡁ࡯࠼ࠍ߽ߟ dᵄ⿥વዉ૕ߩᝄࠆ⥰޿ߦ৻⷗ߔࠆߣૃߡ޿ࠆ.
ߒ߆ߒ, d ᵄ⿥વዉߢ࡜ࠗࡦࡁ࡯࠼߇ሽ࿷ߔ
ࠆ႐วߪ⹜ᢱਛߩࠊߕ߆ߥਇ⚐‛╬ߦࠃߞߡࡁ࡯࠼ઃㄭߦḰ☸ሶ߇⺃⿠ߐࠇ, ૐ᷷ߢ T1-1
оT 3 ߩଐሽᕈ߆ࠄߕࠇ T1-1оT ߦᓥ߁ᱷ⇐⁁ᘒኒᐲߦ⿠࿃ߒߚࠦ࡝ࡦࡂೣ߇⷗ࠄࠇࠆߩ߇
৻⥸⊛ߢ޽ࠆ[23]. ߒ߆ߒ੹࿁ߩ⹜ᢱߩ⾰߇޽߹ࠅࠃߊߥ޿ߣ⠨߃ࠄࠇࠆ 1111 ♽ߦ߽㑐ࠊࠄߕ, ૐ᷷ߢࠦ࡝ࡦࡂೣ߇⷗ࠄࠇߥ߆ߞߚ
ߎߣࠍ⠨߃ࠆߣ, න⚐ߦ d ᵄ࡜ࠗࡦࡁ࡯࠼ߢ
޽ࠆߣᢿቯߢ߈ࠆ⚿ᨐߢߪߥ޿. ታ㓙, หߓ⚿᥏᭴ㅧߩPrFeAsO1-Ǭߦ߅ߌࠆ⏛႐ଚ౉㐳ታ㛎߆ࠄߪ, ࡁ࡯࠼ߩߥ޿⿥વዉ⁁ᘒ߇ታ⃻ߒߡ޿ࠆߎߣ߇␜ໂߐࠇߡ޿ࠆ[24]. ߎࠇࠄߩ⚿ᨐࠍߤ߁ℂ⸃ߔࠆ߆ߦߟ޿ߡߪᓟㅀߔࠆ.

࿑5 LaFeAs(O0.89F0.11), BaFe2(As0.67P0.33)2, (Ba0.6K0.4)Fe2As2
ߩTcߢߩ୯ߢⷙᩰൻߒߚT1-1ߩ᷷ᐲଐሽᕈᮮゲ߽ฦ
Tcߢⷙᩰൻߒߚ᷷ᐲࠍ⴫ߔTc⋥ਅߦࠦࡅ࡯࡟ࡦࠬࡇ
࡯ࠢ߇ߥ޿ߎߣߪ౒ㅢߛ߇Tcࠃࠅචಽૐ᷷ߩᝄࠆ⥰޿ߪฦ‛⾰ߢ⇣ߥࠆ㧢㧚ታ㛎⚿ᨐ ̆ BaFe2(As1-xPx)2 ߦ߅ߌࠆ NMR
ᰴߦ, 122 ♽ߩਛߢ߽ As ࠍ╬ଔᢙߩ P ߢ⟎߈឵߃ߚ BaFe2(As1-xPx)2 ߦߟ޿ߡߩ NMR ߩ⚿ᨐࠍ⚫੺ߔ
ࠆ[7]. ߪߓ߼ߦߎߩ♽ߩ․ᓽߦߟ޿ߡ◲නߦㅀߴࠆ. ߎߩ♽ߪ਄ㅀߩ㔚ሶ࠼࡯ࡊ♽ LaFeAs(O1-xFx)ߣ

13

ߪ⇣ߥࠅ, 㔚⩄ࠍዉ౉ߔࠆߎߣߥߊ⿥વዉ
ࠍ⺃⿠ߢ߈ࠆὐ߇․ᓽߢ޽ࠆ. ߹ߚ, dHvA᷹ቯ߇น⢻ߥ㕖Ᏹߦ⚐⦟ߥන⚿᥏⹜ᢱ߇ᓧ
ࠄࠇ, ♖ኒ᷹ቯࠍⴕ߁਄ߢ㊀ⷐߥ♽ߢ޽ࠆ
[15, 25]. ࿑ 6 ߦ Ba122 ♽ߩࡎ࡯࡞࠼࡯ࡊ♽(Ba,K)Fe2As2[26, 27], 㔚 ሶ ࠼ ࡯ ࡊ ♽Ba(Fe,Co)2As2[28], ╬ ଔ ᢙ P ⟎ ឵ ♽BaFe2(As,P)2[7]ߩߘࠇߙࠇߦ߅ߌࠆᦨ㜞ߩ
Tc ઃㄭߩ⚵ᚑߢߩ(T1T)-1 ߩ᷷ᐲଐሽᕈࠍ␜
ߔ. ߎࠇࠄਃߟߩߤߩ♽ߦ߅޿ߡ߽ᦨ㜞ߩ
Tc ઃㄭߩ‛⾰ߢߪ, 㗼⪺ߥ෻ᒝ⏛ᕈࠁࠄ߉߇ૐ᷷ߢ⊒㆐ߒߡ޿ࠆߎߣ߇ࠊ߆ࠆ. ߐࠄ
ߦ, ૐࠛࡀ࡞ࠡ࡯෻ᒝ⏛ᕈ⋧㑐ߩ⊒㆐߇㗼⪺ߥ߽ߩ߶ߤ Tc ߇㜞޿௑ะߦ޽ࠆߎߣ߇
⺒ߺขࠇࠆ[Tc ((Ba0.6K0.4)Fe2As2) = 38 K > Tc
(BaFe2(As0.67P0.33)2)

=

30

K

>

Tc

(Ba(Fe0.92Co0.08)2As2) = 22 K]. ߎߩࠃ߁ߦ
122 ♽ߢߪ, ෻ᒝ⏛ᕈࠁࠄ߉ߣ⿥વዉߩ㑆ߦኒធߥ⋧㑐߇޽ࠆࠃ߁ߦ⷗߃ࠆ‫ޕ‬

࿑6 122♽ߣ1111♽ߦ߅ߌࠆ᭽‫ߩߢ⾰‛ߥޘ‬Asࠨࠗ࠻ߩ(T1T)-1 ߩ᷷ᐲଐሽᕈ[7]Უ‛⾰ BaFe2As2(TN = 135 K)[29]ࡎ࡯࡞࠼࡯ࡊ♽(Ba0.6K0.4)Fe2As2 (Tc = 38 K) [26, 30]╬ଔᢙ⟎឵♽BaFe2(As0.67P0.33) (Tc = 30 K) [7]㔚ሶ࠼࡯ࡊ♽Ba(Fe0.92Co0.08)2As2(Tc = 22 K) [28]LaFeAs(O0.89F0.11) (Tc= 25 K) [5]LaFeAsO0.6 (Tc = 28 K) [20]

৻ᣇ, ࿑5 ߦ␜ߔࠃ߁ߦBaFe2(As0.67P0.33)2
ߩ⿥વዉ⁁ᘒߢߪ, Tc ⋥ਅߦࠦࡅ࡯࡟ࡦࠬࡇ࡯ࠢ߇ߥߊ, ૐ᷷ߢ T1-1 ߇᷷ᐲߦᲧ଀ߔࠆࠦ࡝ࡦࡂೣ߇⷗
ࠄࠇࠆ[7]. ߎߩࠃ߁ߥᝄࠆ⥰޿ߪ, ਄ㅀߒߚ࡜ࠗࡦࡁ࡯࠼߇ሽ࿷ߒ, ࠊߕ߆ߥਇ⚐‛ߦࠃߞߡᱷ⇐⁁ᘒኒᐲ߇↢ߓߚ႐วߩᝄࠆ⥰޿ߦࠃߊૃߡ޿ࠆ. ታ㓙, BaFe2(As0.67P0.33)2 ߩන⚿᥏⹜ᢱࠍ↪޿ߚ⏛႐ଚ౉㐳, ᾲવዉ₸[31], ߏߊᦨㄭߢߪᲧᾲታ㛎߆ࠄ߽[32], ࡜ࠗࡦࡁ࡯࠼ߩሽ࿷߇ᡰᜬߐࠇߡ޿ࠆ. ⥝๧ᷓ޿ߎߣߦ, หߓ⚿᥏᭴ㅧࠍ߽ߟ Ba122 ♽ߩਛߢ߽ࡎ࡯࡞࠼࡯ࡊ♽ߩ(Ba0.6K0.4)Fe2As2 ߢߪ,
BaFe2(As0.67P0.33)2 ߣోߊ⇣ߥࠆࡈ࡞ࠡࡖ࠶ࡊߩ⿥વዉ⁁ᘒߢ޽ࠆߎߣ߇␜ໂߐࠇߡ޿ࠆ. ࿑ 5 ߆ࠄࠊ߆ࠆࠃ߁ߦ, (Ba0.6K0.4)Fe2As2 ߢߪࠦࡅ࡯࡟ࡦࠬࡇ࡯ࠢ߇⷗ࠄࠇߥ޿ߩߪ౒ㅢߩᝄࠆ⥰޿ߢ޽ࠆ߇, T1-1 ߇ૐ᷷ߢ T 5 ⒟ᐲߩᄢ߈ߥߴ߈ࠍ߽ߟ᷷ᐲଐሽᕈࠍ␜ߒ[30], BaFe2(As0.67P0.33)2 ߢ⷗ࠄࠇߚࠦ࡝ࡦࡂೣߪ⷗
ࠄࠇߕ⇣ߥࠆ᷷ᐲଐሽᕈࠍ␜ߒߡ޿ࠆ. (Ba,K)Fe2As2 ߩⷺᐲಽ⸃శ㔚ሶಽశ(ARPES)[33]߿⏛႐ଚ౉㐳[34]ߩታ㛎⚿ᨐߪ, ࡁ࡯࠼ߩߥ޿╬ᣇ⊛ߥ 2 ⒳㘃ߩ⿥વዉࠡࡖ࠶ࡊߩሽ࿷ࠍ␜ໂߒ, (Ba0.6K0.4)Fe2As2 ߩ
NMR ታ㛎ߣࠦࡦࠪࠬ࠹ࡦ࠻ߢ޽ࠆߣ⠨߃ࠄࠇࠆ. BaFe2(As0.67P0.33)2 (Tc = 30 K)ߣ(Ba0.6K0.4)Fe2As2 (Tc =38 K)ߪหߓ⚿᥏᭴ㅧࠍ߽ߜ, ߶߷ห⒟ᐲߩ Tc, Ᏹવዉ⁁ᘒߢߩ෻ᒝ⏛ᕈࠁࠄ߉ࠍ߽ߟ♽ห჻ߦ߽㑐ࠊࠄߕ, ߎࠇ߶ߤ⇣ߥࠆ⿥વዉ⁁ᘒࠍ␜ߔߎߣߪ㛳߈ߢ޽ࠅ, ㋕♽⿥વዉ૕ߦ߅ߌࠆ⿥વዉ⊒⃻ᯏ᭴ࠍ⠨߃ࠆ਄ߢࠞࠡߣߥࠆታ㛎⚿ᨐߢߪߥ޿߆ߣ╩⠪ࠄߪ⠨߃ߡ޿ࠆ.
㧣㧚⠨ኤ ̆ 1111 ♽ߣ 122 ♽ߩ⿥વዉࠡࡖ࠶ࡊߩᲧセએ਄ߢㅀߴߡ߈ߚLaFeAs(O,F)ߣBa122 ♽ߩ⿥વዉ⁁ᘒߦߟ޿ߡ߹ߣ߼ࠆߣ, (1)ࠦࡅ࡯࡟ࡦࠬࡇ࡯ࠢ
ߪߤߩ‛⾰ߢ߽౒ㅢߒߡ⷗ࠄࠇߥ޿, (2)Tc ࠃࠅචಽૐ᷷ߩ᷷ᐲߩߴ߈ߦ᥉ㆉᕈߪ⷗ࠄࠇߥ޿
(LaFeAs(O,F): T1-1оT 3, BaFe2(As,P)2: оT, (Ba,K)Fe2As2: оT 5) ߎߣ߇᜼ߍࠄࠇࠆ. ࠦࡅ࡯࡟ࡦࠬࡇ࡯
ࠢ߇ߥߊ, Tc ࠃࠅචಽૐ᷷ߢߩ T1-1оT 3 ߩ᷷ᐲଐሽᕈߪ, 11 ♽ߩ FeSe ╬ߢ߽ႎ๔߇޽ࠆ[35, 36, 37]. ߎ

14ࠇࠄߩ⚿ᨐߪ, ㋕♽⿥વዉ૕߇㕖ᓥ᧪ဳ⿥વዉ૕ߢ޽ࠆߎߣࠍ⋥ធ␜ߔ⚿ᨐߢ޽ࠆߣหᤨߦ, ࡁ࡯࠼ߩ޽ࠆ߽ߩߣߥ޿߽ߩ߇㕖Ᏹߦૃߚ♽ߦ߽㑐ࠊࠄߕታ⃻ߒ߁ࠆߎߣ߽␜ໂߒߡ޿ࠆ. ℂ⺰⊛ߦߪ,
LaFeAs(O,F)ߢ⷗ࠄࠇߚ T1-1оT 3 ߩᝄࠆ⥰޿ߪ, srᵄ⿥વዉࡕ࠺࡞ߦၮߠ޿ߡ⺑᣿߇ߥߐࠇߚ[38-42].
․ߦ, Tc ⋥ਅߦࠦࡅ࡯࡟ࡦࠬࡇ࡯ࠢ߇⷗ࠄࠇߥ޿ߣ޿߁ታ㛎੐ታߪ, ⇣ߥࠆࡈࠚ࡞ࡒ㕙㑆ߢ⿥વዉࠡ
ࡖ࠶ࡊߩ╓ภࠍᄌ߃ࠆsrᵄࡕ࠺࡞ߢࠃߊℂ⸃ߢ߈ࠆ. ߚߛߒ, หߓLaFeAs(O,F)ߢ߽Tc એਅߢT1-1оT 5
߆ࠄ T 6 ⊛᷷ᐲଐሽᕈ[43, 44]ࠍ␜ߔߣ޿߁ႎ๔߿, ⿥વዉ⁁ᘒߢߩࡑ࡞࠴ࠡࡖ࠶ࡊ᭴ㅧߦ㑐ଥߒߚ⇣Ᏹ߽ႎ๔ߐࠇߡ߅ࠅ[45, 46], ․ߦ 1111 ♽ߦ߅޿ߡߪ, ࠃࠅ⦟⾰ߥ⹜ᢱࠍ↪޿ߚ੹ᓟߩ⎇ⓥ߇ᔅⷐߢ޽
ࠆ. ৻ᣇ, Ba122 ♽ߢ࡜ࠗࡦࡁ࡯࠼߇޽ࠆ♽ߣߥ޿♽߇␜ໂߐࠇࠆߎߣߦ㑐ߒߡ, ℂ⺰⊛ߦߪ sr⁁ᘒߩ▸࿐ౝߢ߽࠾ࠢ࠻ࠥࡦߩ㜞ߐࠍૐߊߔࠆߎߣߢ࡜ࠗࡦࡁ࡯࠼ߪቯᕈ⊛ߦߪ಴⃻ߒ߁ࠆ[18]. ߒ߆ߒ,ߘߩ႐วߦߪૐ޿ォ⒖᷷ᐲ(10 K ⒟ᐲ)ߒ߆ᓧࠄࠇߥ޿ߎߣ߇␜ໂߐࠇߡ߅ࠅ, ߶߷หߓ Tc ߩ
BaFe2(As,P)2 (Tc = 30 K)ߣ(Ba,K)Fe2As2 (Tc = 38 K)ߩታ㛎⚿ᨐࠍቯ㊂⊛ߦ⺑᣿ߢ߈ࠆߩ߆ߦߟ޿ߡߪ,ߐࠄߥࠆ⼏⺰߇ᔅⷐߢ޽ࠈ߁. ߹ߚࡎ࡯࡞㕙ߦᲧߴ, 㔚ሶ㕙ߦ⇣ᣇ⊛ߥ⿥વዉࠡࡖ࠶ࡊ߇↢ߓ߿ߔ޿
ߎߣ߽ℂ⺰⊛ߦ␜ໂߐࠇߡ޿ࠆ[47, 48]. ߎߩࠃ߁ߦ㋕♽⿥વዉߩ⿥વዉࠡࡖ࠶ࡊ᭴ㅧߦ㑐ߒߡߪᷙᴋ
ߣߒߚ⁁ᘒߢ޽ࠆߣ޿߃ࠆ߇, ⿥વዉࠡࡖ࠶ࡊ᭴ㅧ߇᥉ㆉ⊛ߢߥ޿ߎߣ߇ࡑ࡞࠴ࡃࡦ࠼ࠍ߽ߟ㋕♽⿥વዉߩ․ᓽߥߩ߆߽ߒࠇߥ޿.
㧤㧚⠨ኤ ̆1111 ♽ߣ 122 ♽ߩᏱવዉ⁁ᘒߩ⏛᳇ബ⿠ߩᲧセᰴߦ, ⿥વዉߩ⊒⃻ᯏ᭴ࠍ⠨߃ࠆ਄ߢ㊀ⷐߣߥࠆᏱવዉ⁁ᘒߩ⏛᳇ബ⿠ߦߟ޿ߡ LaFeAs(O,F)ߣ
Ba122 ♽ࠍᲧセߔࠆ. Ba122 ♽ߢߪ Tc ߇ᦨᄢࠍ␜ߔ⚵ᚑߦ߅޿ߡ, (T1T)-1 ߆ࠄ␜ໂߐࠇࠆ㗼⪺ߥ෻ᒝ⏛ᕈࠁࠄ߉ߩ⊒㆐߇᷹ⷰߐࠇ, ⿥વዉߩ⊒⃻ᯏ᭴ߣߒߡ෻ᒝ⏛ᕈࠁࠄ߉߇᦭ജߥ୥⵬ߢ޽ࠆߎߣࠍᡰᜬ
ߔࠆ⚿ᨐࠍ⚫੺ߒߚ. ห᭽ߩ⿥વዉߣ෻ᒝ⏛ᕈࠁࠄ߉ߩኒធߥ㑐ଥߪ11♽ߢ߽౒ㅢߦ⷗ࠄࠇࠆ[49, 36,37]. ߎࠇࠄߩ⚿ᨐߪℂ⺰߆ࠄᜰ៰ߐࠇࠆࡈࠚ࡞ࡒ㕙ߩࡀࠬ࠹ࠖࡦࠣߦၮߠ޿ߚࠬࡇࡦࠁࠄ߉ߦࠃࠆ
⿥વዉ⊒⃻ᯏ᭴ߣࠦࡦࠪࠬ࠹ࡦ࠻ߩࠃ߁ߢ޽ࠆ. 122 ♽߿ 11 ♽ߣߪኻᾖ⊛ߦ, LaFeAs(O,F)ߢߪ⿥વዉ
ߣ෻ᒝ⏛ᕈࠁࠄ߉ߩ㑆ߦߪ, ᣿⏕ߥ⋧㑐ߪ⷗ࠄࠇߥ޿ߎߣ߽⚫੺ߒߚ. ߚߛߒ, NMR ߇᷹ⷰߔࠆߩߪ
mK ⒟ᐲߩૐࠛࡀ࡞ࠡ࡯ߩ⏛᳇ࠁࠄ߉ߢ޽ࠆߩߢ, NMR ߢ᷹ⷰߢ߈ߥ޿㜞޿ࠛࡀ࡞ࠡ࡯ࠍᜬߟ෻ᒝ⏛ᕈࠁࠄ߉߇⿥વዉߦ㑐ਈߒߡ޿ࠆน⢻ᕈ߽޽ࠆ. ታ㓙, ᦨㄭⴕࠊࠇߚਛᕈሶ㕖ᒢᕈᢔੂታ㛎ߦࠃࠆߣ,(1)⿥વዉࠍ␜ߔ⚵ᚑߩ LaFeAs(O1-xFx)(࿑ 4 ߩ x = 0.07 ߆ࠄ 0.11 ߦ⋧ᒰ)ߢ߽Უ‛⾰ LaFeAsO ߣห⒟ᐲߩ෻ᒝ⏛ᕈࠁࠄ߉߇ሽ࿷ߔࠆߎߣ, (2)Tc ߩૐ޿⚵ᚑ(࿑ 4 ߩ x = 0.14 ߦ⋧ᒰ)ߢߪ෻ᒝ⏛ᕈࠁࠄ߉߇߶߷
ᶖᄬߔࠆߎߣࠍႎ๔ߒߡ޿ࠆ[50]. ߎߩਛᕈሶታ㛎ߩ⚿ᨐߪ, 㜞޿ࠛࡀ࡞ࠡ࡯(meV ⒟ᐲ)ࠍ߽ߟ෻ᒝ⏛ᕈࠁࠄ߉ߣ⿥વዉ߇⋧㑐ߒߡ޿ࠆߎߣࠍ␜ໂߔࠆ⚿ᨐߢ޽ࠅ, NMR ታ㛎ߣ⍦⋫ߔࠆ⚿ᨐߢ޽ࠆࠃ߁ߦ
⷗߃ࠆ. ߒ߆ߒ, ᦨㄭߩℂ⺰ߦࠃࠆߣ LaFeAs(O,F)ߩࠃ߁ߥ㔚ሶ࠼࡯ࡊ♽ߢߪૐࠛࡀ࡞ࠡ࡯ߩ⏛᳇ࠁࠄ߉߇ᧄ⾰⊛ߦᛥ߃ࠄࠇࠆߎߣ߇␜ໂߐࠇߡ߅ࠅ[51, 52], ੹ᓟߩਛᕈሶታ㛎ߦࠃࠆ⏛᳇ബ⿠ߩࠛࡀ࡞ࠡ
࡯ଐሽᕈߩ⹦⚦ߥ⸃᣿߇ᓙߚࠇࠆ. એ਄ߩࠃ߁ߦᏱવዉ⁁ᘒߩ⏛᳇ബ⿠ߣ⿥વዉߩ⋧㑐ߦ㑐ߒߡ‫ޔ‬122♽߿ 11 ♽ߣኻᾖ⊛ߥᝄࠆ⥰޿ࠍ⷗ߖࠆ LaFeAs(O1-xFx)ߢ޽ࠆ߇, ߎߩ㆑޿߇ 1111 ♽ߦ᥉ㆉ⊛ߦ⷗ࠄࠇࠆᕈ⾰ߥߩ߆ࠍ᣿ࠄ߆ߦߔࠆߎߣ߽㋕♽⿥વዉߩℂ⸃ߦߪ㊀ⷐߢ޽ࠆߣ╩⠪ࠄߪ⠨߃ߡ޿ࠆ.
㧥㧚߅ࠊࠅߦ̆੹ᓟߩ⺖㗴ߣዷᦸએ਄ㅀߴߡ߈ߚࠃ߁ߦ, หߓ㋕♽⿥વዉ૕ߢ߽⚿᥏᭴ㅧߩ⇣ߥࠆ 1111 ♽ߣ 122 ♽ߢߪ⿥વዉߣᏱવ
ዉ⁁ᘒߩ⏛᳇ബ⿠ߩ⋧㑐ߩ᭽ሶ߇⇣ߥࠆߎߣ, ߐࠄߦหߓ⚿᥏᭴ㅧߩ 122 ♽ߢߔࠄᔅߕߒ߽หߓ⿥વ
ዉࠡࡖ࠶ࡊࠍᜬߚߥ޿ߎߣࠍ␜ໂߔࠆ⚿ᨐ߇ᓧࠄࠇߡ޿ࠆߎߣࠍ⚫੺ߒߚ. ߎߩࠃ߁ߦᄙ᭽ߥᝄࠆ⥰15޿ࠍ⷗ߖࠆ‫ޟ‬㕖᥉ㆉ⊛ߥ‫‛ޠ‬ᕈߪ, ㌃㉄ൻ‛߿㊀޿㔚ሶ♽⿥વዉ૕ߢߪߺࠄࠇߥ߆ߞߚᝄࠆ⥰޿ߢ޽ࠆߣᕁࠊࠇࠆ. ߎߩߎߣߪ, ㋕♽⿥વዉ૕ߢߪ㋕ߩ 5 ⒳㘃ߩ゠㆏ߦࠃࠆࡑ࡞࠴ࡃࡦ࠼ߩࡈࠚ࡞ࡒ㕙ߦࠃߞߡ‛ᕈ߇ᡰ㈩ߐࠇࠆߚ߼, ⚿᥏᭴ㅧ߿㔚ሶ⁁ᘒ, ⏛ᕈ, ߘߒߡ⿥વዉ߇ⶄ㔀ߦ⛊ߺว޿, ዋߒߩᏅ⇣߇ᄢ߈ߥᄌൻࠍ↢ߓ߁ࠆ㋕♽⿥વዉ․᦭ߩᕈ⾰ࠍ␜ໂߒߡ޿ࠆߩ߆߽ߒࠇߥ޿. ޿ߕࠇߦߖࠃ, ߐࠄߦ㜞޿ Tc ࠍ߽ߟᣂ‛⾰㐿⊒ࠍ฽߼ߡ㋕♽⿥વዉߩಽ㊁ߦߪ߿ࠆߴ߈ߎߣ߇⤘ᄢߦ޽ࠅ, ߎߩ♽߇ߤ
߁ℂ⸃ߐࠇࠆߩ߆੹ᓟߩㅴዷ߇㕖Ᏹߦᭉߒߺߢ޽ࠆ.
⻢ㄉ࿕૕㊂ሶ‛ᕈ⎇ⓥቶߩ⊝᭽߿࿕૕㔚ሶ‛ᕈ⎇ⓥቶ, ಝ❗♽ℂ⺰⎇ⓥቶ, ᧲੩Ꮏᬺᄢቇ⚦㊁⎇ⓥቶߩ
⊝᭽ߦߪ᦭↪ߥࠕ࠼ࡃࠗࠬ߿࠺ࠖࠬࠞ࠶࡚ࠪࡦࠍߒߡ޿ߚߛ߈߹ߒߚ. ᧄ⎇ⓥߪ JST-TRIP, Global
COE ࡊࡠࠣ࡜ࡓ‫ޟ‬᥉ㆉᕈߣഃ⊒ᕈ߆ࠄ⚜ߋᰴ਎ઍ‛ℂቇ‫ࠍޠ‬ᆎ߼ߣߔࠆ⎇ⓥ⾗㊄ߩᡰេࠍฃߌߡ߅
ࠅ, ╩⠪ߪ․೎⎇ⓥຬߣߒߡᣣᧄቇⴚᝄ⥝ળ߆ࠄߩᡰេ߽ฃߌߡ޿߹ߔ. ᧄ⎇ⓥߩ NMR ታ㛎ߪᄢ㊂ߩᶧ૕ࡋ࡝࠙ࡓࠍᔅⷐߣߔࠆታ㛎ߢ޽ࠅ, ૐ᷷‛⾰⑼ቇ࠮ࡦ࠲࡯ߩᣇ‫ߩޘ‬ᶧ૕ࡋ࡝࠙ࡓଏ⛎߳ߩߏዧജߥߒߢߪᚑࠅ┙ߜ߹ߖࠎߢߒߚ. ߎߩ႐ࠍ߅୫ࠅߒߡෘߊᓮ␞↳ߒ਄ߍ߹ߔ.
ෳ⠨ᢥ₂

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[38] D. Parker et al., Phys. Rev. B , 134524 (2008).
[39] A. V. Chubukov et al., Phys. Rev. B , 134512 (2008).
[40] M. M. Parish et al., Phys. Rev. B , 144514 (2008).
[41] Y. Bang, H.-Y. Choi, and H. Won, Phys. Rev. B , 054529 (2009).
[42] Y. Nagai et al. New J. Phys. , 103026 (2008).
[43] Y. Kobayashi et al., J. Phys. Soc. Jpn. , 073704 (2009).
[44] F. Hammerath et al., arXiv:0912.3682 (2009).
[45] K. Matano et al., Europhys. Lett. , 57001 (2008).
[46] S. Kawasaki et al., Phys. Rev. B , 220506(R) (2008).
[47] A. V. Chubukov et al., Phys. Rev. B , 140515(R) (2009).
[48] T. A. Maier et al., Phys. Rev. B , 224510 (2009).
[49] T. Imai et al., Phys. Rev. Lett. , 177005 (2009).
[50] S. Wakimoto et al., arXiv:0906.2453 (2009).
[51] H. Ikeda, J. Phys. Soc. Jpn. , 123707 (2008).
[52] H. Ikeda et al., arXiv:1002.4471 (2010).
⪺⠪
ਛ੗ ␭੺ 㧔Yusuke Nakai㧕ᣣᧄቇⴚᝄ⥝ળ․೎⎇ⓥຬ(PD)㧔࿕૕㊂ሶ‛ᕈ⎇ⓥቶ Tel: 075-753-3752㧕
nakai@scphys.kyoto-u.ac.jp⇛ᱧ

2006 ᐕ 3 ᦬ ੩ㇺᄢቇℂቇୃ჻
2009 ᐕ 3 ᦬ ੩ㇺᄢቇℂቇඳ჻
2008 ᐕ 4 ᦬ࠃࠅ⃻⡯

17





࠱࡞㧙ࠥ࡞ᴺߦࠃࠆㅘ᣿ᄙሹᕈ‛⾰ߩวᚑߣ⹏ଔ
Sol-Gel Synthesis and Characterization of Transparent Porous Materials㊄᫪ਥ␽
੩ㇺᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼
K. Kanamori
Graduate School of Science, Kyoto University
Synthesis and characterization of novel organic-inorganic hybrid aerogels are reviewed. These aerogels areprepared by using a 2-step acid/base sol-gel reaction and composed of polymethylsilsesquioxane (PMSQ,
CH3SiO1.5). Pore structures in the 10–100 nm scale have been characterized by the small angle X-ray scattering(SAXS) and gas adsorption techniques. Mechanical properties have also been investigated by the uniaxial
compression. It has been revealed that these aerogels show an outstanding elastic behavior like a sponge; aerogels
are compressed without collapsing up to 80 % followed by almost perfect recovery called "spring-back". The
improved mechanical properties allow a simplified process of preparation and easier handling compared to theconventional silica aerogels which are remarkably brittle.
ߪߓ߼ߦ ৻⥸⊛ߦ࠱࡞㧙ࠥ࡞ᴺߣߪ㧘㊄ዻࠕ࡞ࠦࠠࠪ
࠼߿㊄ዻႮߩട᳓ಽ⸃࡮㊀❗ว෻ᔕࠍ೑↪ߒߡ㜞ಽሶ࿕૕ࠍᓧࠆᶧ⋧วᚑᴺߩߎߣࠍᜰߔ[1]㧚
෻ᔕᑼࠍ࿑ 1 ߦ଀␜ߒߚߣ߅ࠅ㧘೨㚟૕㧔ߎߩ႐วߪ࠹࠻࡜ࠕ࡞ࠦࠠࠪࠪ࡜ࡦ Si(OR)4㧕߇㉄߹ߚߪႮၮ⸅ᇦߦࠃࠅട᳓ಽ⸃ࠍฃߌ㧘ߘߩᓟ❗วߔࠆߎߣߢࡔ࠲ࡠࠠࠨࡦ⚿ว㧔ߎߩ႐วߪ
ࠪࡠࠠࠨࡦ⚿ว Si–O–Si㧕ࠍᒻᚑߒ㧘ࠦࡠࠗ࠼⊛ߥૐಽሶ㊂❗ว૕߇↢ᚑߔࠆ㧚ߎߩࠃ߁ߥ❗
ว૕߇ṁᇦਛߦಽᢔߒߚ‫߁޿ߣޠ࡞࠱ޟ‬ᶧ૕⁁ᘒࠍ⚻ߡ㧘㊀❗วߦࠃࠅਃᰴర⊛ߦᐢ߇ߞߚࡔ
࠲ࡠࠠࠨࡦ⚿วߣߘߩ㓗㑆ߦṁᇦࠍ฽߻࿕૕
ߢ޽ࠆ‫ߩ߳ޠ࡞ࠥޟ‬ォ⒖㧘޿ࠊࠁࠆ࠱࡞㧙ࠥ࡞
ォ⒖߇⿠ߎࠅ㧘᭽‫ߥޘ‬ൻቇ⚵ᚑ㧘ᓸ⚦᭴ㅧ㧘ᒻ

࿑ 1 ࠱࡞㧙ࠥ࡞ᴺߦ߅ߌࠆ෻ᔕᑼߣᮨᑼ࿑㧚ߎߩ଀ߢߪ㧘྾ቭ⢻ᕈߩ࠹࠻࡜ࠕ࡞ࠦࠠࠪࠪ࡜ࡦ߆ࠄࠪ࡝ࠞ
ࠥ࡞߇ᓧࠄࠇࠆ᭽ሶࠍ␜ߒߚ㧚ฦᲑ㓏ߪ㉄㧔H+㧕߹ߚߪႮၮ㧔OHí㧕ࠍ⸅ᇦߣߒߡㅴⴕߔࠆ㧚ᘒࠍ߽ߟൻว‛߇ᓧࠄࠇࠆ㧚ൻቇ⚵ᚑߣߒߡߪ
ࠪ࡝ࠞ㧔SiO2㧕߿ࠕ࡞ࡒ࠽㧔Al2O3㧕ߥߤߩ㊄ዻ㉄ൻ‛߿ߘߩ౒㊀ว૕㧘࠴࠲ࡦ㉄ࡃ࡝࠙ࡓ㧔BaTiO3㧕
ߥߤߩⶄ㉄ൻ‛㧘ߘߒߡᧄⓂߢᛒ߁᦭ᯏ㧙ήᯏࡂࠗࡉ࡝࠶࠼૕߇ઍ⴫⊛ߢ޽ࠆ㧚࠱࡞㧙ࠥ࡞ᴺߦ߅ߌ
ࠆട᳓ಽ⸃࡮㊀❗ว෻ᔕߪ㧘ቶ᷷ઃㄭ߆ࠄߖ޿ߗ޿ 100 °C ⒟ᐲߩૐ᷷ߢ߽චಽߦㅴⴕߔࠆߚ߼㧘ߚߣ

18

߃߫ 2000 °C એ਄ߩ㜞᷷ߢṁⲢߒ૞⵾ߐࠇߡ޿ࠆṁⲢࠪ࡝ࠞࠟ࡜ࠬࠍ᦭ᯏ‛ߣಽሶ࡟ࡌ࡞ߢⶄวൻߔ
ࠆߎߣߪਇน⢻ߢ޽ࠆ߇㧘࠱࡞㧙ࠥ࡞ᴺࠍ↪޿ࠇ߫ߎߩࠃ߁ߥⶄว૕ߩวᚑ߇ኈᤃߢ޽ࠆ㧚ߎࠇߦࠃࠅ㧘Ყセ⊛ᒝᐲ߇㜞޿߇⣀ᕈߢ޽ࠆήᯏࡀ࠶࠻ࡢ࡯ࠢߩജቇ․ᕈࠍᡷༀߔࠆߎߣ߿㧘᦭ᯏቭ⢻ၮߦࠃࠆᯏ⢻ᕈࠍઃਈߔࠆߎߣ߇น⢻ߣߥࠆ[2]㧚߹ߚ㧘࠱࡞㧙ࠥ࡞ᴺߪ㧘ᶧ⋧ߦ߅ߌࠆ㊀ว෻ᔕࠍ೑↪ߒߚࡊࡠ࠮ࠬߢ޽ࠆߚ߼㧘࠮ࡦ࠴ࡔ࡯࠻࡞⚖ߩࡃ࡞ࠢ૕ߩߺߥࠄߕᓸ☸ሶ߿ࡈࠔࠗࡃ࡯㧘⭯⤑ߥߤߩᄙ᭽
ߥᒻᘒߩ߽ߩࠍวᚑߔࠆߎߣ߇ኈᤃߢ޽ࠆߎߣ߽ᄢ߈ߥ㝯ജߣߥߞߡ޿ࠆ㧚 1990 ᐕઍએ೨ߦ߅ߌࠆ࠱࡞㧙ࠥ࡞ᴺߪ㧘ࠪ࡝ࠞࠟ࡜ࠬวᚑߩࠃ߁ߥ㜞᷷ߢߩṁⲢ߇ᔅⷐߥࡊࡠ࠮ࠬ
ࠍૐ᷷ߢታ⃻ߢ߈ࠆᣇᴺ㧘ߔߥࠊߜࡃ࡞ࠢ⁁ߩࠟ࡜ࠬ㘃ૃ‛⾰ߩૐ᷷วᚑᴺߣߒߡ⣉శࠍᶎ߮ߚ [3]߇㧘⃻࿷ߢߪࠟ࡜ࠬߩࠃ߁ߥ✺ኒ૕ࠃࠅ߽߻ߒࠈᄙሹ૕ߩวᚑᴺߣߒߡᵈ⋡ߐࠇߡ޿ࠆ㧚⚦ሹߪߘߩᄢ߈ߐߦࠃߞߡಽ㘃ߐࠇߡ߅ࠅ㧘2 nm એਅߩ႐วߪࡑࠗࠢࡠሹ㧘2–50 nm ߪࡔ࠰ሹ㧘50 nm એ਄ߩ߽ߩߪࡑࠢࡠሹߣ๭߫ࠇߡ޿ࠆ㧚1990 ᐕ೨ᓟߦ߅ߌࠆⷙೣ㈩೉ࠍ᦭ߔࠆࡔ࠰ࡐ࡯࡜ࠬࠪ࡝ࠞ㧔ߔߥࠊߜ㧘ࠨࠗ࠭߇ 2–50 nm ߩ⚦ሹࠍᜬߟੑ㉄ൻࠤࠗ⚛㧕ߩႎ๔[4,5]ߦ┵ࠍ⊒ߒ㧘⃻࿷߹ߢߦࡔ࠰ࡐ࡯࡜ࠬ‛⾰ߦ㑐ߔࠆ⤘ᄢߥႎ๔߇ߥߐࠇߡ޿ࠆ㧚ࡔ࠰ࡐ࡯࡜ࠬ‛⾰એᄖߦ߽ᄙ᭽ߥᄙሹᕈ‛⾰ߩ⎇ⓥ߇ⴕࠊࠇߡ
޿ࠆ߇㧘ਛߢ߽᳇ሹ₸ߩ㕖Ᏹߦ㜞޿ૐኒᐲᄙሹᕈ‛⾰⟲ߢ޽ࠆࠛࠕࡠࠥ࡞[6,7]ߩ⎇ⓥ߇ㄭᐕᵴ⊒ߦߥߞߡ߈ߡ޿ࠆ㧚࡮㜞᳇ሹ₸㧔~ 90 %㧕ߩᄙሹᕈ‛⾰ࠛࠕࡠࠥ࡞ߣߪ㧘೨ㅀߩࠃ߁ߦૐኒᐲ㧔ౖဳ⊛ߦߪ~ 0.1 g cmí1㧕⟲ߢ޽ࠅ㧘ౖဳ⊛ߥࠪ࡝ࠞࠛࠕࡠࠥ࡞ߥߤ⚦ሹࠨࠗ࠭߇ᢙච nm ߦࠃߊ೙ᓮߐࠇߚ߽ߩߪ㜞޿นⷞశㅘㆊ₸㧔~ 90 %㧕ࠍ␜ߔ㧚ߎࠇࠄߩ᭴ㅧ⊛ߥ․ᓽߦઃ㓐ߒߡૐዮ᛬ᕈ߿ૐ⺃㔚ᕈߥߤ⒳‫⥝ߩޘ‬๧ᷓ޿‛ᕈࠍ␜ߔ߇㧘ਛߢ߽ૐᾲવዉᕈ߇ᦨ߽㓙┙ߞߚࠛࠕࡠࠥ࡞ߩ․ᓽߢ޽ࠆ㧚⓸⚛ߥߤߩ᳇૕ಽሶߩᐔ
ဋ⥄↱ⴕ⒟ࠃࠅ߽⍴޿ᢙච nm ⒟ᐲߩ⚦ሹᓘߣ㧘ⶄ㔀ߦ౉ࠅ⚵ࠎߛ⚦ሹ᭴ㅧࠍ᦭ߔࠆࠛࠕࡠࠥ࡞ਛߢ
ߪ᳇૕ಽሶห჻ߩㆇേ㊂੤឵߇⿠ߎࠄߕ㧘߹ߚ㧘㓸࿅⊛ߥኻᵹ߽ᒰὼ⿠ߎࠄߥ޿ߚ߼㧘᳇⋧ߦࠃࠆવᾲ߇߶ߣࠎߤ⿠ߎࠄߥ޿㧚߹ߚ㧘࿕૕ᚑಽ߇ዋߥ޿㧔~ 10 %㧕ߚ߼࿕⋧ߦࠃࠆવᾲ߽ૐߊ㧘ࠛࠕࡠࠥ࡞ߩᾲવዉ₸ߪోߡߩ‛⾰ਛߢᦨૐߢ޽ࠆ㧚ߎߩߚ߼㧘㜞ᕈ⢻ߥ㧔ㅘ᣿㧕ᢿᾲ᧚ߣߒߡߩᔕ↪߇ᵈ⋡ߐࠇߡ߅ࠅ㧘․ߦㄭᐕߦ߅ߌࠆⅣႺ໧㗴߳ߩ㑐ᔃ߆ࠄ㧘ࠛࠕࡠࠥ࡞⎇ⓥ߇߹ߔ߹ߔᵴ⊒ߦߥߞߡ޿ࠆ㧚ࠛࠕࡠࠥ࡞⥄૕ߩᱧผߪฎߊ㧘ᒰᤨ Stanford ᄢቇߩ S. S. Kistler ߇ 1931 ᐕߦ 1DWXUH ⹹਄ߦ⊒⴫ߒߚ
ࠊߕ߆ 1 ࡍ࡯ࠫߦ߽ḩߚߥ޿࡟࠲࡯߇ᦨೋߩႎ๔ߢ޽ࠆ[8]㧚Kistler ߪ㧘ࠥ࡞ਛߦ฽߹ࠇࠆṁᇦࠍ㧘㗼⪺ߥ෼❗ࠍᒁ߈⿠ߎߔߎߣߥߊ᳇⋧ߦ⟎߈឵߃ࠆ㧘ߔߥࠊߜੇ῎ߐߖࠆߚ߼ߦ㧘ṁᇦߩ⿥⥃⇇⁁ᘒࠍ೑↪ߒߚ㧚ㅢᏱ㧘ૐኒᐲߩḨẢࠥ࡞ࠍੇ῎ߐߖࠆ႐ว㧘ṁᇦࠍ⫳⊒㒰෰ߔࠆ㓙ߦ↢ߓࠆ᳇㧙࿕㧙ᶧ⇇㕙ߦᄢ߈ߥᲫ▤ജ߇ߪߚࠄ߈㧘ࠥ࡞ߪᄢ߈ߊ෼❗ߒ⚦ሹ߇ᄬࠊࠇࠆ㧚Kistler ߪ㧘ṁᇦࠍ᳇㧙ᶧ⇇㕙ߩߥ޿⿥⥃⇇⁁ᘒߦߒߚ޽ߣᷫ࿶ߔࠆߎߣߢᲫ▤ജߩ⊒↢ࠍ㒐߉ߟߟ᳇ൻߐߖ㧘෼❗ࠍ߶ߣࠎߤ⿠ߎߐ
ߕߦ㜞޿᳇ሹ₸ߩࠛࠕࡠࠥ࡞ࠍ૞⵾ߔࠆߎߣߦᚑഞߒߚߩߢ޽ࠆ㧚1931 ᐕᒰᤨߪ㧘㊄ዻࠕ࡞ࠦࠠࠪ࠼
ࠍ↪޿ߚ޿ࠊࠁࠆ࠱࡞㧙ࠥ࡞ᴺߪ㐿⊒ߐࠇߡ߅ࠄߕ㧘ࠤࠗ㉄࠽࠻࡝࠙ࡓߩ᳓ṁᶧߢ޽ࠆ᳓ࠟ࡜ࠬࠍ↪
޿ߡࠪ࡝ࠞࠛࠕࡠࠥ࡞߇วᚑߐࠇߚ߇㧘ߎߩᣇᴺߢߪ⣕Ⴎಣℂ߇ᾘ㔀ߢ޽ࠆߚ߼㧘⃻࿷ߩਥᵹߪ࠱࡞
㧙ࠥ࡞ᴺߦขߞߡઍࠊࠄࠇߡ޿ࠆ㧚․ߦ㧘ࠪ࡝ࠞࠛࠕࡠࠥ࡞ߪ⚦ሹߩ೙ᓮ߇ኈᤃߢ޽ࠅ㧘◲ଢߦㅘ᣿ߢ㜞ຠ⾰ߥ߽ߩ߇ᓧࠄࠇࠆߎߣ߆ࠄ㧘⃻࿷ߦ⥋ࠆ߹ߢ⋓ࠎߦ⎇ⓥߐࠇߡ߈ߚ㧚ߎߩࠃ߁ߦ㧘࠱࡞㧙ࠥ࡞ᴺߩ⊒ዷߣߣ߽ߦࠛࠕࡠࠥ࡞ߩ㝯ജ⊛ߥ⻉‛ᕈ߽᣿ࠄ߆ߣߥࠅ㧘೨ㅀߩࠃ߁ߦᭂૐᾲવዉᕈࠍ೑↪ߒߚᔕ↪ߦ㑐ߒߡߪᄢ߈ߥᦼᓙ߇㓸߹ߞߡ޿ࠆ㧚ߦ߽߆߆ࠊࠄߕ㧘ᧄᩰ⊛ߥᔕ↪ߦ❬߇ߞߡ޿ߥ޿ߩߪ㧘ࠛࠕࡠࠥ࡞ߩ㊀ᄢߥᰳὐߦ⿠࿃ߒߡ޿ࠆ㧚ߔߥࠊߜ㧘ᯏ᪾⊛ᒝᐲ߇ᭂ߼
ߡૐ޿ߎߣߢ޽ࠆ㧚ߎࠇߪ㧘ࠛࠕࡠࠥ࡞ߩኒᐲ߇ૐ޿ߎߣߣ㧘࠽ࡁࡔ࡯࠻࡞ࠨࠗ࠭ߩᓸ⚦ߥ☸ሶ߇߶߷ὐធ⸅ߢㅪ⚿ߒߡ޿ࠆߛߌߩ⚦ሹ᭴ㅧߦ↱᧪ߒߡ޿ࠆ߇㧘ߎࠇࠄߩߎߣ߇ࠛࠕࡠࠥ࡞ߩ‛ᕈࠍ᳿ቯ

19ઃߌߡ޿ࠆߎߣࠍ⠨ᘦߔࠆߣ㧘ఝࠇߚ‛ᕈߣૐ޿ᯏ᪾⊛ᒝᐲߪ޽ࠆ⒟ᐲਇนಽߥߎߣߣ⸒߃ࠆ㧚ߒ߆ߒߥ߇ࠄ㧘ᯏ᪾⊛ᒝᐲߩᰳᅤߦ↱᧪ߔࠆࡂࡦ࠼࡝ࡦࠣߩ㔍ߒߐߣ㧘․ߦ⿥⥃⇇ੇ῎߇ᔅⷐߢ޽ࠆߎߣ
߇ࠛࠕࡠࠥ࡞ߩᔕ↪ࠍ㆙ߑߌߡ޿ࠆߎߣߪ⏕߆ߥߎߣߢ޽ࠅ㧘ߘࠇࠍ࿁ㆱߔࠆᄙᄢߥദജ߽ߥߐࠇߡ
߈ߚ㧚ࠛࠕࡠࠥ࡞ߩᒝᐲᡷༀߦߪ㧘ਥߦ 2 ⒳㘃ߩᣇᴺ߇ᬌ⸛ߐࠇߡ޿ࠆ㧚1 ߟߪ㧘ࠛࠕࡠࠥ࡞ߩ೨㚟૕ߣߥࠆḨẢࠥ࡞ࠍวᚑߒߚ޽ߣߩࠛ࡯ࠫࡦࠣ㧔ᾫᚑ㧕ಣℂߦࠃࠅ㧘㛽ᩰ᭴ㅧߘߩ߽ߩࠍᒝൻߔࠆᣇᴺߢ
޽ࠆ㧚ḨẢࠥ࡞ߩࠛ࡯ࠫࡦࠣࠍ᳓߿Უṁᶧ㧘ࡕࡁࡑ࡯ṁᶧਛߢⴕ߁ߎߣߦࠃࠅ㧘ᓸ⚦☸ሶ㑆ߩࡀ࠶ࠢ߇ᚑ㐳ߒ㧘ᯏ᪾⊛ᒝᐲ߇ะ਄ߔࠆߎߣ߇ႎ๔ߐࠇߡ޿ࠆ[9,10]㧚߽߁ 1 ߟߪ㧘᦭ᯏ㧙ήᯏࡂࠗࡉ࡝࠶࠼
ൻߢ޽ࠅ㧘㕖෻ᔕᕈߩ᦭ᯏ⟎឵ၮߣ 3 ߟߩ෻ᔕᕈߩ޽ࠆ⟎឵ၮࠍ߽ߟਃቭ⢻ᕈࠪ࡜ࡦ㧔R–SiX3㧘R ߪࠕ࡞ࠠ࡞ၮ㧘X ߪࠕ࡞ࠦࠠࠪၮ߿ࡂࡠࠥࡦߥߤ㧕ߣⶄวൻߔࠆᣇᴺ[11–14]㧘ߘߒߡࠛࠕࡠࠥ࡞ߩ㛽ᩰ⴫㕙ࠍ᦭ᯏ㜞ಽሶߢⵍⷒߔࠆᣇᴺ[15–17]ߥߤ߇⹜ߺࠄࠇߡ޿ࠆ㧚ࡂࠗࡉ࡝࠶࠼ൻߦࠃࠅࠛࠕࡠࠥ࡞ߩ
ᒝᐲ߇ᄢ᏷ߦะ਄ߔࠆߎߣ߇ႎ๔ߐࠇߡ޿ࠆ߇㧘೨⠪ߩᣇᴺߢߪ㊀ว૕߇ࠃࠅ⇹᳓⊛ߦߥࠆߚ߼ࠥ࡞
ൻਛߦᏂⷞ⊛ߥ⋧ಽ㔌߇⿠ߎࠅ㧘⚦ሹ᭴ㅧ߇ࡑࠗࠢࡠࡔ࡯࠻࡞⒟ᐲߦ߹ߢ⊒㆐ߔࠆߚ߼นⷞశㅘㆊᕈ
߇ᄬࠊࠇ㧘߹ߚߘߩࠃ߁ߥᄙሹ૕ߢߪᾲવዉ₸߽ᄢ᏷ߦჇᄢߒߡߒ߹߁ߣ⠨߃ࠄࠇࠆ㧚ᓟ⠪ߩᣇᴺߢ
ߪ㧘ࠛࠕࡠࠥ࡞ਛߦ߅ߌࠆ⚦ሹߩ৻ㇱࠍ೎ߩ᦭ᯏ㜞ಽሶߢၒ߼ߡߒ߹߁ߚ߼ኒᐲ߇Ⴧᄢߒ㧘หᤨߦนⷞశㅘㆊᕈ߽ᄬࠊࠇࠆߚ߼㧘ㅘ᣿ߢૐኒᐲߣ޿߁ࠛࠕࡠࠥ࡞ߩ․ᓽ߇៊ߥࠊࠇࠆ㧚ᚒ‫ߪޘ‬㧘ㅘ᣿࡮ૐኒᐲߣ޿߁ࠛࠕࡠࠥ࡞⁛⥄ߩ․ᕈࠍ៊ߥ߁ߎߣߥߊᒝᐲࠍᡷༀߒ㧘ߒ߆߽⿥⥃⇇ੇ῎ࠍ↪޿ࠆߎߣߥߊࠛࠕࡠࠥ࡞ࠍวᚑߔࠆߣ޿߁⋡⊛ߢ⎇ⓥࠍⴕߞߡ߈ߚ[18í20]㧚৻⥸⊛ߦ㧘ࠪ࡝ࠞࠛࠕࡠࠥ࡞ࠍ࠱࡞㧙ࠥ࡞ᴺߢ૞⵾ߔࠆ㓙ߦ↪޿ࠄࠇࠆ೨㚟૕ߪ㧘࿑ 1 ߦ␜ߒߚࠃ߁ߥ྾ቭ⢻ᕈߩ࠹࠻࡜ࠕ࡞ࠦࠠࠪࠪ࡜ࡦߢ޽ࠅ㧘ᦨ⚳⊛ߦᓧࠄࠇࠆൻว‛ߩ㧔ℂᗐ⊛ߥ㧕⚵ᚑᑼߪ SiO2 ߢ޽ࠆ߇㧘ᚒ‫ޘ‬ߪਃቭ⢻ᕈߩࡔ࠴࡞࠻࡝ࠕ࡞ࠦࠠࠪࠪ࡜ࡦ㧔CH3Si(OR)3㧕ߩߺࠍ಴⊒‛⾰ߣߒߡ↪޿㧘᦭ᯏ㧙ήᯏࡂࠗࡉ࡝࠶࠼૕ߢ޽ࠆࡐ࡝ࡔ࠴࡞ࠪ࡞࠮ࠬࠠࠝࠠࠨࡦ㧔CH3SiO1.5㧘PMSQ ߣ⇛ߔ㧕⚵ᚑߩࠛࠕࡠࠥ࡞ࠍ
ᓧߚ㧚಴⊒⚵ᚑ߿෻ᔕ᧦ઙࠍㆡಾߦ೙ᓮߔࠆߎߣߦࠃࠅ㧘ㅘ᣿ߢᯏ᪾⊛ᒝᐲߩఝࠇߚࠛࠕࡠࠥ࡞߇ᓧ
ࠄࠇ㧘ߐࠄߦ⿥⥃⇇ੇ῎ࠍ↪޿ࠆߎߣߥߊࠛࠕࡠࠥ࡞⁁ߩࠠ࠮ࡠࠥ࡞㧔⿥⥃⇇ੇ῎ߦࠃߞߡੇ῎ߒߚࠛࠕࡠࠥ࡞ߦኻߒ㧘ṁᇦߩ⫳⊒ߦࠃߞߡੇ῎ߒߚࠥ࡞ࠍࠠ࠮ࡠࠥ࡞ߣ๭߱㧕ࠍᓧߚ㧚⎇ⓥ⥄૕ߪ߹ߛ಴⊒Ბ㓏ߦ޽ࠆ߇㧘ߎߎߦߘߩ᭎ⷐࠍ߹ߣ߼ߡႎ๔ߔࠆ㧚วᚑᴺߦߟ޿ߡ
೨ㅀߩࠃ߁ߦ㧘ࠛࠕࡠࠥ࡞ߩᯏ᪾⊛ᒝᐲࠍჇᄢߐߖࠆ⋡⊛ߢ㧘᦭ᯏ㧙ήᯏࡂࠗࡉ࡝࠶࠼ࠛࠕࡠࠥ࡞
ߩวᚑ߇ⴕࠊࠇߡ߈ߚ㧚ߘߩਥߥᚢ⇛ߩ 1 ߟ߇᦭ᯏቭ⢻ၮࠍ᦭ߔࠆਃቭ⢻ᕈࠕ࡞ࠦࠠࠪࠪ࡜ࡦࠍ↪޿ߚࠥ࡞วᚑߢ޽ࠆ㧚ⓨ᳇ਛߩḨ᳇ߦࠃࠆഠൻࠍ㒐ߋߚ߼ߦ⇹᳓ൻ߇ᔅⷐߢ޽ࠆߎߣ㧘㐳޿㧔޽ࠆ޿ߪ߆ߐ㜞޿㧕⟎឵ၮࠍ᦭ߔࠆਃቭ
⢻ᕈࠕ࡞ࠦࠠࠪࠪ࡜ࡦߪဋ৻ߦ
ࠥ࡞ൻߒߦߊ޿[21]ߎߣ߆ࠄ㧘ࡔ࠴࡞࠻࡝ࡔ࠻ࠠࠪࠪ࡜ࡦ㧔MTMS㧕߇೨㚟૕ߣߒߡᄙߊ
↪޿ࠄࠇߡ߅ࠅ㧘ᚒ‫ࠍࠇߎ߽ޘ‬↪޿ߡታ㛎ࠍⴕߞߚ㧚ߚߛߒ㧘MTMS ߆ࠄᓧࠄࠇࠆ㊀ว૕ߪ⇹᳓ᕈ߇㜞ߊ㧘㊀❗วㅜਛߢ⋧20

࿑ 2 ᧄ⎇ⓥߦ߅ߌࠆ 2 Ბ㓏࠱࡞㧙ࠥ࡞෻ᔕࠬࠠ࡯ࡓ㧚ട᳓ಽ⸃ࠍ㈶㉄ߦࠃࠆ㉄ᕈ⸅ᇦ᧦ઙ㧘㊀❗วࠍዩ⚛ߩട᳓ಽ⸃ߦၮߠߊႮၮᕈ⸅ᇦ
᧦ઙߢⴕߞߚ㧚߹ߚ㧘⋧ಽ㔌ࠍᛥ೙ߔࠆߚ߼ߦ⇇㕙ᵴᕈ೷ࠍ↪޿ߚ㧚ಽ㔌ߔࠆ௑ะ߇ᒝ޿[22]߇㧘ㅘ᣿ߥࠛࠕࡠࠥ࡞ࠍวᚑߔࠆߚ߼ߦߪߎࠇࠍ㒐ߋᔅⷐ߇޽ࠆ㧚ᄙߊߩ⎇ⓥߢߪ㧘Ꮒⷞ⊛ߥ⋧ಽ㔌ࠍᒁ߈⿠ߎߐߥ޿྾ቭ⢻ᕈࠕ࡞ࠦࠠࠪࠪ࡜ࡦߣߩ౒㊀ว߇ⴕࠊࠇߡ޿ࠆ߇㧘
ജቇ․ᕈࠍᦨᄢ㒢ߦᡷༀߔࠆߚ߼ߦ㧘ᚒ‫ ߪޘ‬MTMS න⁛ߢߩࠥ࡞วᚑࠍ⹜ߺߚ㧚ᚒ‫߇ޘ‬ណߞߚᣇᴺߦߪ 2 ߟߩ․ᓽ߇޽ࠆ㧚߹ߕ㧘㉄/Ⴎၮߩ 2 Ბ㓏෻ᔕࠍណ↪ߒߚߎߣ㧘ߘߒߡ⇇㕙ᵴᕈ೷ࠍ౒ሽߐߖߚߎߣߢ޽ࠆ㧔࿑ 2㧕㧚ㅢᏱ㧘ࠪ࡝ࠞࠛࠕࡠࠥ࡞ߩวᚑߦ↪޿ࠄࠇࠆႮၮ⸅ᇦߦࠃ
ࠆ 1 Ბ㓏෻ᔕߢߪ㧘ട᳓ಽ⸃㧘㊀❗ว෻ᔕߣ߽ߦႮၮ⸅ᇦߦࠃࠅㅴⴕߔࠆ߇㧘ߎࠇࠍߘߩ߹߹ MTMSߩ♽ߦ↪޿ࠆߎߣߪߢ߈ߥ޿㧚MTMS ߢߪࡔ࠴࡞ၮߩ⺃⿠ലᨐߩߚ߼ࠤࠗ⚛ේሶ਄ߩ㔚ሶኒᐲ߇㜞ߊ㧘᳓㉄ၮߩ᳞ᩭ᡹᠄ߦࠃࠅ㐿ᆎߔࠆട᳓ಽ⸃߇Ყセ⊛ㆃ޿㧚ߐࠄߦ㧘Ⴎၮᕈ᧦ઙਅߢߪ㧘ട᳓ಽ⸃ࠍฃ
ߌߚ MTMS ಽሶߪߔߺ߿߆ߦ㊀❗วࠍ㐿ᆎߒ㧘⍴ᤨ㑆ߩ߁ߜߦᄢ߈ߥ㊀ว૕ߦ߹ߢᚑ㐳ߒߡ⋧ಽ㔌ࠍᒁ߈⿠ߎߔߚ߼ဋ৻ߥࠥ࡞ߪᓧࠄࠇߥ޿㧚ߎࠇߦኻߒ㧘㉄ᕈ᧦ઙਅߢ෻ᔕߐߖࠆߣ㧘ട᳓ಽ⸃෻ᔕߪᲧセ⊛ဋ╬ߦㅴ߻߇㧘߿ߪࠅ㊀❗วਛߦ⋧ಽ㔌ࠍᒁ߈⿠ߎߒ㧘ਇㅘ᣿ߥࠥ࡞ߣߥࠆ㧚․ߦ㧘ૐኒᐲࠥ࡞ࠍวᚑߔࠆߚ߼ߩᄙṁᇦ᧦ઙߢߪ㧘߆ߏဳࠪ࡞࠮ࠬࠠࠝࠠࠨࡦߣ๭߫ࠇࠆ 8 ㊂૕ࠍਛᔃߣߒߚ㐽ߓߚ᭴ㅧࠍᒻᚑߔࠆ[23]ߚ߼㧘ਃᰴర᨞ᯅ߇⊒㆐ߖߕ㧘⚿᥏ᕈߩᓸ☸ሶᴉᲚ߇↢ߓࠆߩߺߣߥࠆ㧚ߎࠇࠄࠍ࿁ㆱߔࠆߚ߼ߩᣇᴺߣߒߡ㧘ᚒ‫㉄ߪޘ‬/Ⴎၮߩ 2 Ბ㓏෻ᔕࠍណ↪ߒߚ㧚ߎࠇߪ㧘ട᳓ಽ⸃෻ᔕࠍ㉄ᕈ᧦ઙਅߢࠃࠅဋ╬ߦㅴⴕߐߖ㧘ߘߩᓟႮၮᕈߦߔࠆߎߣߢ㊀❗วࠍଦㅴߔࠆᣇᴺߢ޽ࠆ㧚ᓥ᧪ߩ㉄/
Ⴎၮ 2 Ბ㓏෻ᔕߢߪ㧘ട᳓ಽ⸃߇⚳ࠊߞߚ࠱࡞ߦࠕࡦࡕ࠾ࠕߥߤߩႮၮᕈ᳓ṁᶧࠍṢਅߔࠆ߇㧘Ṣਅߩ⍍㑆ߦዪᚲ⊛ߦ pH ߇Ⴧᄢߔࠆߚ߼ਇဋ৻ᕈ߇Ⴧᄢߔࠆߣ⠨߃㧘ዩ⚛ߩട᳓ಽ⸃෻ᔕࠍ೑↪ߔࠆߎߣߣߒߚ㧚ߎߩᣇᴺߢߪ㧘޽ࠄ߆ߓ߼ዩ⚛ࠍṁ⸃ߒߚᒙ㉄ᕈ᳓ṁᶧߦ MTMS ࠍട߃ߡട᳓ಽ⸃ࠍⴕ޿㧘ߘߩᓟዩ⚛߇ട᳓ಽ⸃ߔࠆ᷷ᐲ㧔~ 55 °C㧕એ਄ߦߔࠆߎߣߢࠕࡦࡕ࠾ࠕࠍ⊒↢ߐߖ㧘♽ౝߩ pH ࠍᓢ‫ޘ‬ߦဋ৻ߦ਄᣹ߐߖࠆ㧚ߔߥࠊߜ㧘ဋ৻ᴉᲚᴺߣห᭽ߩᚻᴺߢ޽ࠆ㧚ߎࠇߦࠃࠅ㧘ࠃࠅဋ৻ߥ᨞ᯅ᭴ㅧ
߇ࠃࠅലᨐ⊛ߦᓧࠄࠇ㧘⚿ᨐ⊛ߦ⋧ಽ㔌ࠍᄢ᏷ߦᛥ೙ߔࠆߎߣ߇ߢ߈ߚ㧚ߒ߆ߒߥ߇ࠄ㧘ㅘ᣿ߥࠥ࡞
ࠍᓧࠆߚ߼ߦߪߐࠄߦ⋧ಽ㔌ࠍᛥ೙ߔࠆᔅⷐ߇޽ߞߚߚ߼㧘⇇㕙ᵴᕈ೷ߩᷝടߦࠃߞߡ㊀ว૕ࠍⷫ᳓
ൻߔࠆߎߣࠍ⹜ߺߚ㧚ࠞ࠴ࠝࡦᕈ⇇㕙ᵴᕈ೷ߢ޽ࠆ Q–ࡋࠠࠨ࠺ࠪ࡞࠻࡝ࡔ࠴࡞ࠕࡦࡕ࠾࠙ࡓࡉࡠࡒ࠼
㧔C16H33N+(CH3)3Brí, ⇛⒓ CTAB㧕ߣ㧘㕖ࠗࠝࡦᕈ⇇㕙ᵴᕈ೷ߢ޽ࠆ Pluronic F127㧔EO106PO70EO106㧘
EO ߪࠛ࠴࡟ࡦࠝࠠࠪ࠼න૏㧘PO ߪࡊࡠࡇ࡟ࡦࠝࠠࠪ࠼න૏ߢ޽ࠅ㧘ߘࠇߙࠇ–(CH2CH2O)–ߣ
–(CH(CH3)–CH2O)–ࠍ⴫ߔ㧕߇⋧ಽ㔌ࠍലᨐ⊛ߦᛥ೙ߔࠆߎߣ߇᣿ࠄ߆ߣߥߞߚ㧚ౕ૕⊛ߥࠥ࡞ߩวᚑᣇᴺߦߟ޿ߡ◲නߦ␜ߔ㧚㈶㉄᳓ṁᶧਛߦዩ⚛ߣ⇇㕙ᵴᕈ೷ࠍṁ⸃ߒ㧘ቶ᷷ߢᡬᜈߒߥ߇ࠄ MTMS ࠍട߃ߚ㧚ട᳓ಽ⸃ࠍㅴⴕߐߖࠆߚ߼ߘߩ߹߹ 30 ಽ㑆ᡬᜈࠍ⛯ߌߚᓟ㧘60 °C ߩᕡ᷷ᮏߦ㕒⟎ߒ㧘ኒ㐽᧦ઙߢࠥ࡞ൻߐߖߚ㧚ߘߩᓟ㧘ᧂ෻ᔕ‛߿⇇㕙ᵴᕈ೷ࠍขࠅ㒰ߊߚ߼ߦࡔ࠲ࡁ
࡯࡞ࠍ↪޿ߡ 3 ࿁ᵞᵺࠍⴕ޿㧘ߐࠄߦ 2–ࡊࡠࡄࡁ࡯࡞ߢṁᇦ੤឵ߒߚ㧚ᦨᓟߦ 80 °C㧘14 MPa ߦ߅޿ߡੑ㉄ൻ὇⚛ߦࠃࠆ⿥⥃⇇ੇ῎ࠍⴕߞߡࠛࠕࡠࠥ࡞ࠍᓧߚ㧚ᓧࠄࠇߚ 2/53 ࠛࠕࡠࠥ࡞ߩᕈ⁁ߦߟ޿ߡ
 ࿑ 3 ߦઍ⴫⊛ߥ⚵ᚑߦࠃࠅᓧࠄࠇߚ PMSQ ࠛࠕࡠࠥ࡞ߩᄖⷰࠍ㧘⴫ 1 ߦ಴⊒⚵ᚑߣ․ᕈࠍ␜ߔ㧚⹜ᢱߪߔߴߡ⿥⥃⇇ੇ῎ߦࠃࠅ૞⵾
ߒߚ߽ߩߢ޽ࠆ㧚↪޿ߚ⇇㕙ᵴᕈ೷ߩ⒳㘃ߦࠃࠅࠛࠕࡠࠥ࡞ߩᄖⷰ
ߪ⇣ߥࠅ㧘ࠞ࠴ࠝࡦᕈ⇇㕙ᵴᕈ೷ߢ޽ࠆ CTAB ߣ CTAC㧔CTAB ߩ⥇⚛ࠍႮ⚛ߢ⟎߈឵߃ߚ߽ߩ㧕ࠍ↪޿ߚ♽ߢߪ㧘ㅘ᣿ᐲߩ㜞޿ࠥ࡞߇ᓧࠄࠇߚߩߦኻߒ㧘㕖ࠗࠝࡦᕈߩ F127 ࠍ↪޿ߚ♽ߢߪ㧘ඨㅘ᣿ߩࠥ࡞߇ᓧࠄࠇߚ㧚ኒᐲ߽ F127-1 ߇߿߿㜞ߊ㧘᳇ሹ₸߇ૐ޿ߎߣ߇

࿑ 3 ᓧࠄࠇߚ PMSQ ࠛࠕࡠࠥ࡞ߩᄖⷰ౮⌀㧚21

⴫ 1 ᓧࠄࠇߚࠛࠕࡠࠥ࡞ߩᕈ⁁Code*1
F127-1
CTAB-1
CTAC-1

Bulk density/g cmí3
0.17
0.13
0.14

Porosity
/%
87.6
90.6
90.0

Aging shrinkage
/%
1.2
0
0

Drying shrinkage
/%
6.4
1.4
1.8

Transmittance*2
/%
39.3
89.3
86.5

*1 ಴⊒⚵ᚑߪ㈶㉄᳓ṁᶧ 20 mL㧘ዩ⚛ 6.0 g㧘MTMS 10 mL ߣ⇇㕙ᵴᕈ೷㧔F127-1 ߢߪ 2.0 g ߩ Pluronic F127,
CTAB-1㧘CTAC-1 ߢߪߘࠇߙࠇ 0.80 g ߩ CTAB ߣ CTAC ࠍ↪޿ߚ㧕㧚㈶㉄᳓ṁᶧߩỚᐲߪ F127-1 ߢߪ 5 mM㧘
CTAB-1 ߅ࠃ߮ CTAC-1 ߢߪ 1 mM㧚
*2 10 mm ෘࠨࡦࡊ࡞ߦ߅ߌࠆᵄ㐳 550 nm ߩนⷞశㅘㆊ₸㧚ಽ߆ߞߚ߇㧘ߎࠇߪࠛ࡯ࠫࡦࠣਛ߿ੇ῎ਛߦ߅ߌࠆ෼❗㊂ߩ㆑޿ߦࠃࠆ߽ߩߢ޽ࠆ㧚⴫ 1 ߦ␜ߒߚߣ
߅ࠅ㧘CTAB/CTAC ♽ߢߪࠛ࡯ࠫࡦࠣਛߩ෼❗߇ήߊ㧘ੇ῎ᤨߦ߅ߌࠆ෼❗߽ࠊߕ߆ߢ޽ࠆ߇㧘F127♽ߢߪࠃࠅᄢ߈ߊ෼❗ߔࠆ㧚ߎࠇߪ㧘⇇㕙ᵴᕈ೷ߣ㊀ว૕ߣߩ⋧੕૞↪ߩ㆑޿ߦࠃࠆ߽ߩߣ⠨߃ࠄࠇࠆ㧚ߔߥࠊߜ㧘CTAB/CTAC ߣ㊀ว૕ߣߩ⋧੕૞↪ߪ㧘CTAB/CTAC ߇᳓ṁᶧਛߢ 10–20 %⒟ᐲߒ߆
⸃㔌ߒߥ޿[24]ߎߣࠍ⠨߃ࠆߣ㧘㕒㔚⊛ߢߪߥߊ⇹᳓ᕈ⋧੕૞↪ߦၮߠߊ߽ߩ߇ᡰ㈩⊛ߢ޽ࠆ㧚ߎߩᒙ޿⋧੕૞↪ߦࠃߞߡ㊀ว૕⴫㕙ߪⷫ᳓ൻߐࠇ㧘㊀❗ว߇޽߹ࠅ㒖ኂߐࠇࠆߎߣߥߊ㧘ࠪ࡜ࡁ࡯࡞
㧔Si–OH㧕ၮߩዋߥ޿ࠥ࡞߇↢ᚑߔࠆ㧚ߎߩㆊ⒟ߦ߅޿ߡ㧘⴫㕙ߦዋ㊂ߛߌ⸃㔌ߒߚᭂᕈၮ㧔࠻࡝ࡔ࠴࡞ࠕࡦࡕ࠾࠙ࡓၮ㧕ߦၮߠߊᱜ㔚⩄߇↢ߓ㧘ߘࠇࠄ߇੕޿ߦ෻⊒ߒ޽߁ߎߣߢ෼❗߇ᛥ೙ߐࠇߡ޿
ࠆ߽ߩߣ⠨߃ࠄࠇࠆ[25]㧚৻ᣇ㧘F127 ♽ߩ႐วߪ㧘F127 ಽሶౝߩࠛ࡯࠹࡞㉄⚛ߣ㊀ว૕⴫㕙ߩࠪ࡜ࡁ࡯࡞ၮߣߩ㑆ߦ↢ߓࠆ᳓⚛⚿ว߇ᡰ㈩⊛ߢ޽ࠆ㧚⹦⚦ߪਇ᣿ߥㇱಽ߽ᄙ޿߇㧘ߎߩᒝ޿⋧੕૞↪ߦࠃࠅ㧘㊀ว૕ߪ޿ߊ߱ࠎⷫ᳓ൻߐࠇࠆ߇㧘หᤨߦ㊀❗ว߽㒖ኂߐࠇࠆ㧚߹ߚ㧘F127 ࠍṁ⸃ߒߚṁᶧߩ☼ᐲ߇㜞޿ߎߣ߆ࠄ㧘㊀ว૕ߩ᜛ᢔߦࠃࠆㆇേ߽⿠ߎࠅߦߊߊ㧘ᄙߊߩᧂ෻ᔕࠪ࡜ࡁ࡯࡞ၮࠍᱷߒߚ߹
߹ࠥ࡞ൻߔࠆ㧚ࠛ࡯ࠫࡦࠣਛ޽ࠆ޿ߪੇ῎ਛߦ߅޿ߡᧂ෻ᔕࠪ࡜ࡁ࡯࡞ၮߤ߁ߒ߇❗วߒ㧘࿑ 1 ߢ␜ߒߚࠃ߁ߥ෻ᔕߦࠃࠅᣂߚߥࠪࡠࠠࠨࡦ⚿วࠍᒻᚑߔࠆߚ߼㧘ࠃࠅᄢ߈ߥ෼❗߇⿠ߎࠆ㧚 ࿑ 4 ߦߪ㧘F127-1 ߣ CTAB-1 ߩ FE-SEM ௝ࠍ␜ߔ㧚৻⷗ߒߡ F127-1 ߩᣇ߇᭴ㅧන૏߇☻ߊ㧘100 nmࠍ⿥߃ࠆࠃ߁ߥᄢ߈ߥ⚦ሹ߽ሽ࿷ߔࠆߎߣ߇ಽ߆ࠆ㧚ߎߩࠃ߁ߥ 100 nm ࠝ࡯࠳࡯ߩਇဋ৻ᕈߦࠃࠅ
Mie ᢔੂ߇↢ߓ㧘F127-1 ߩశㅘㆊ₸߇ૐਅߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚߹ߚ㧘㛽ᩰ᭴ㅧ⥄૕߽㧘ᓟㅀߔࠆࠃ߁ߦ F127-1 ߢߪ⋥ᓘ 15 nm ⒟ᐲߩ☸ሶߤ߁ߒ߇㧘ࠃࠅኒ⌕ߒߡ❫⛽⁁ߩ㛽ᩰࠍᒻᚑߒߡ޿ࠆߩߦኻ
ߒ㧘CTAB-1 ߢߪ㧘⚂ 11 nm ߩ߿߿ዊߐ޿☸ሶ߇ᢙ⃨⁁ߦㅪ⚿ߒߡ߅ࠅ㧘☸ሶߤ߁ߒߩኒ⌕ᐲߪૐ޿㧚ߎߩߎߣߪ޽ߣߢ⺑᣿ߔࠆࠃ߁ߦࠥ࡞ߩᯏ᪾⊛ᒝᐲߦᓇ㗀ࠍਈ߃ࠆ㧚߹ߚ㧘ߎࠇࠄߩ PMSQ ࠛࠕࡠࠥ࡞ߩᾲ⊛ᕈ⾰ࠍ TG-DTA ߢ⺞ߴߚߣߎࠈ㧘300 °C ߹ߢߪᄌൻ߇⷗ࠄ
ࠇߕ㧘300 °C એ਄ߢࡔ࠴࡞ၮߩಽ⸃
ߦߣ߽ߥ߁㊀㊂ᷫዋߣ⊒ᾲࡇ࡯ࠢ߇ⷰኤߐࠇߚ㧚ߎߩ෻ᔕߪ
400–500 °C ߢ㗼⪺ߦㅴߺ㧘500 °C એ਄ߢߪᄌൻ߇⷗ࠄࠇߥ߆ߞߚ㧚⇇㕙ᵴᕈ೷ߩಽ⸃᷷ᐲߪ 150–200 °C ⒟ᐲߢ޽ࠆߩߢ㧘⿥⥃⇇ੇ῎ᓟߩࠛࠕࡠࠥ࡞ਛߦߪ⇇㕙ᵴᕈ೷ߪᱷሽߒ
ߡ޿ߥ޿ߎߣ߇૬ߖߡ␜ߐࠇߚ㧚22

࿑ 4 (a) F127-1㧘(b) CTAB-1 ߦ߅ߌࠆ⚦ሹ᭴ㅧ㧚⚦ሹ᭴ㅧ⸃ᨆ
ࠛࠕࡠࠥ࡞ߩ⚦ሹ᭴ㅧߪᢙ㨪ᢙච nm ࠬࠤ࡯࡞ߩⶄ㔀ߥᒻ⁁ߢ޽ࠆߚ߼㧘ߘߩ⹦⚦ߥ᭴ㅧ⸃ᨆߪ࿎
㔍ߢ޽ࠆ㧚ߎߎߢߪ㧘৻⥸⊛ߦࠃߊ↪޿ࠄࠇࠆዊⷺ X ✢ᢔੂᴺ㧔SAXS㧕ߣࠟࠬๆ⌕ᴺߦࠃࠆ⸃ᨆ⚿ᨐࠍ␜ߔ㧚࿑ 5(a)ߦ F127-1 ߣ CTAB-1 ߩ SAXS ࡄ࠲࡯ࡦࠍ␜ߔ㧚ߎߎߢ㧘ᮮゲߪᢔੂࡌࠢ࠻࡞ T ߢ޽ࠅ㧘ᢔੂⷺ 2ș ߣߩ㑆ߦߪએਅߩ㑐ଥ߇޽ࠆ㧚

T

4S

O

sin T

  (1)ߐࠄߦ㧘(b)ߦߪ Porod ࡊࡠ࠶࠻㧔Tvs. ,(T)T4㧕ࠍ␜ߒߚ㧚ᚒ‫߇ޘ‬วᚑߒߚࠛࠕࡠࠥ࡞ߩ SAXS ࡄ࠲࡯ࡦ
߿ Porod ࡊࡠ࠶࠻ߦ߅ߌࠆᝄേ᭴
ㅧߪ㧘ࠦࡠࠗ࠼ṁᶧߥߤߩ☸ሶಽᢔ♽߆ࠄߩᢔੂߦㄭߊ㧘৻⥸⊛ߥࠛࠕࡠࠥ࡞ߢⷰኤߐࠇࠆ⾰㊂ࡈ࡜ࠢ࠲࡞᭴ㅧ[26]ߪ฽߹ߥ޿ߎߣ߇
ಽ߆ߞߚ㧚SAXS ࡄ࠲࡯ࡦߩ⍫ශ

࿑ 5 F127-1㧘
CTAB-1 ߦ߅ߌࠆ(a) SAXS ࡄ࠲࡯ࡦߣ(b) Porod ࡊࡠ࠶࠻㧚ߢ␜ߒߚ▎ᚲߦߘࠇߙࠇᒙ޿ࡇ࡯
ࠢ߇ሽ࿷ߔࠆ߇㧘ߎࠇߪ㧘⋧㑐ࡇ࡯ࠢߢ޽ࠆߣ⠨߃ࠄࠇ㧘࿑ 4 ߩ⚦ሹ᭴ㅧߣ૬ߖߡ⠨߃ࠆߣ㧘᭴ㅧ⊛ߥ⋧㑐〒㔌߇⚦ሹࠍ᜽ࠎߢ㓞ࠅว߁㛽ᩰห჻ߦ߹ߢ⥋ߞߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚Bragg ߩᑼ߆ࠄዉ߆ࠇ
ࠆࠃ߁ߦ㧘ȁ= 2ʌ/Tm㧔Tm ߪࡇ࡯ࠢ૏⟎ߦ߅ߌࠆ T ߩ୯㧕ࠃࠅ⋧㑐㐳 ȁ ࠍ᳞߼ࠆߣ㧘F127-1 ߢߪ 35.9 nm㧘
CTAB-1 ߢߪ 44.9 nm ߣߥߞߚ㧚ߐࠄߦ㧘೨ㅀߒߚࠃ߁ߦ㧘F127-1 ߦߪ 100 nm ࠬࠤ࡯࡞ߩ᭴ㅧ߽ሽ࿷
ߔࠆߎߣ߇㧘ૐⷺߦ߅ߌࠆ㧔< 0.1 nmí1 ઃㄭ㧘ਣߢ࿐ߞߚ㗔ၞ㧕ࠃࠅᒝ޿ᢔੂ߆ࠄ߽ⵣઃߌࠄࠇࠆ㧚߹ߚ㧘Porod ࡊࡠ࠶࠻߆ࠄߪ㧘නಽᢔ೰૕⃿ߩℂ⺰ᢔੂ㑐ᢙࠃࠅ㧘ᭂᄢ ,(T)T4 ୯ߦ߅ߌࠆᢔੂࡌࠢ࠻࡞
TM ߆ࠄ㧘☸ሶ⋥ᓘ G ߇ G = 2 × 2.74/TM ߣ᳞߼ࠄࠇࠆ[27]㧚ߎߩ⚿ᨐ㧘F127-1 ࠍ᭴ᚑߔࠆ☸ሶߪ 15 nm ߢ޽ࠅ㧘CTAB-1 ߩ 11 nmߣᲧߴߡ߿߿ᄢ߈޿ߎߣ߇ಽ߆ߞߚ㧚߹ߚ㧘☸ሶ⴫㕙߆ࠄߩᢔੂߦ⋧ᒰߔࠆ T < 1 nmí1
߆ࠄߩᢔੂߪ㧘Porod ೣߦࠃࠆߣ㧘ᐔṖ⴫㕙㧔⴫㕙ࡈ࡜ࠢ࠲࡞ᰴర = 2㧕ߢ޽ࠇ߫ ,(T)~ Tí4 ࠍ␜ߔ߇㧘ߎߩ႐วߪߤߜࠄߩ⹜ᢱߦ
߅޿ߡ߽í4 ਸ਼ࠃࠅ߽ᵻߊ㧘⴫㕙ࡈ࡜ࠢ࠲࡞
᭴ㅧ޽ࠆ޿ߪ 1 ᰴ☸ሶਛߩᓸ⚦᭴ㅧߩሽ࿷
ࠍ␜ໂߒߡ޿ࠆ㧚ߟ߹ࠅ㧘1 ᰴ☸ሶౝㇱߦᄢ߈ߐ߇ 2 nm એਅߩࡑࠗࠢࡠሹࠍᄙߊ฽
߻น⢻ᕈ߇␜ໂߐࠇࠆ㧚 ߎߩߎߣࠍ⏕߆߼ࠆߚ߼ߦ㧘77 K ߦ߅ߌࠆ⓸⚛ๆ⌕ߦࠃࠆ᷹ቯ߅ࠃ߮ Įs–ࡊࡠ࠶࠻ߦࠃࠆ⸃ᨆࠍⴕߞߚ㧚⓸⚛ๆ⌕╬᷷✢ߪ㧘

࿑ 6 F127-1㧘CTAB-1 ߦ߅ߌࠆ(a) 77 K ߢߩ⓸⚛ๆ⌕╬࿑ 6(a)ߦ␜ߒߚࠃ߁ߥᒻߣߥߞߚ㧚ߎߎߢ㧘᷷✢ߣ(b) Į s㧙ࡊࡠ࠶࠻㧚23᷹ቯߪ⋧ኻ࿶ S/S0㧔S ߣ S0 ߪߘࠇߙࠇๆ⌕ᤨߩ࿶ജߣ㘻๺⫳᳇࿶㧕ࠍ 0.9 ߹ߢߦߣߤ߼㧘⹜ᢱਛߩࡑࠗ
ࠢࡠሹࠍ㒰ߊ⚦ሹߦ߅ߌࠆᲫ▤ಝ❗ߪ⠨ᘦߒߥ߆ߞߚߎߣߦᵈᗧߐࠇߚ޿㧚ߎࠇߪ㧘ࠛࠕࡠࠥ࡞ߩࠃ
߁ߥᨵࠄ߆޿⹜ᢱߢߪ㧘Ძ▤ಝ❗ߦࠃࠅ᳇㧙࿕㧙ᶧ⇇㕙߇ᒻᚑߒߡ⹜ᢱ߇෼❗ߒ[28]㧘ᱜ⏕ߥ᷹ቯ߇ⴕ߃ߥ޿ߚ߼ߢ޽ࠆ㧚ߎࠇߦኻᔕߔࠆ Įs–ࡊࡠ࠶࠻ࠍ(b)ߦ␜ߒߚ㧚Įs–ࡊࡠ࠶࠻ߪᲧセࡊࡠ࠶࠻ߩ৻⒳ߢ޽ࠅ㧘᷹ቯ⹜ᢱߣห᭽ߥൻቇ⊛ᕈ⾰ߩ⴫㕙ࠍ߽ߟෳᾖ⹜ᢱߩฦ⋧ኻ࿶ߦ߅ߌࠆๆ⌕㊂ࠍ㧘⋧ኻ࿶ 0.4
ߦ߅ߌࠆๆ⌕㊂ 90.4 ߢ㒰ߒߚ߽ߩࠍ Įs ୯ߣ๭߱[29]㧚ߘߒߡ᷹ቯ⹜ᢱߩๆ⌕㊂ࠍ㧘⋧ኻ࿶ߩઍࠊࠅߦ Įs୯ࠍ↪޿ߡࡊࡠ࠶࠻ߔࠆ㧚ෳᾖ⹜ᢱߩๆ⌕㊂ࠍ Įs ୯ߦኻߒߡࡊࡠ࠶࠻ߔࠆߣᔅߕේὐࠍㅢࠆ⋥✢ߣߥࠆ߇㧘᷹ቯ⹜ᢱߩࡊࡠ࠶࠻߇␜ߔߎߩ⋥✢߆ࠄߩߕࠇ߆ࠄ㧘᷹ቯ⹜ᢱߦ߅ߌࠆ⚦ሹ․ᕈ㧘․ߦࡑࠗࠢ
ࡠሹ․ᕈࠍ⹏ଔߢ߈ࠆ㧚F127-1㧘CTAB-1 ਔ⹜ᢱߩ Įs–ࡊࡠ࠶࠻ߪ㧘ૐ Įs ୯ߢ┙ߜ਄߇ࠅ㧘ߘߩᓟ✢ᒻߦჇടߔࠆߎߣ߇ಽ߆ߞߚ㧚ߎߩ✢ᒻㇱಽߩ௑߈ߣ㧘ෳᾖ⹜ᢱߩᲧ⴫㕙Ⓧߣ߆ࠄ㧘᷹ቯ⹜ᢱߩᄖㇱᲧ
⴫㕙Ⓧ㧔ࡑࠗࠢࡠሹએᄖߩ⚦ሹߦ↱᧪ߔࠆᲧ⴫㕙Ⓧ㧕߇᳞߼ࠄࠇࠆ㧚߹ߚ㧘නಽሶๆ⌕ጀߦ߅ߌࠆๆ
⌕ಽሶᢙߣಽሶᢿ㕙ⓍߣߩⓍ߆ࠄ✚Ყ⴫㕙Ⓧ 6BET ࠍ᳞߼ࠆ BET ᴺࠍ૬ߖߡ↪޿ࠆߎߣߦࠃࠅ㧘ࡑࠗࠢࡠሹᲧ⴫㕙Ⓧ 6micro ࠍ▚಴ߒ㧘⴫ 2 ߦ߹ߣ߼ߚ㧚F127-1㧘CTAB-1 ߣ߽ߦ㧘Įs–ࡊࡠ࠶࠻߆ࠄ᳞߼ࠄࠇࠆ
ࡑࠗࠢࡠሹኈⓍ 9micro ߪో⚦ሹኈⓍ 9p ߩ 1–2 %⒟ᐲߣዋߥ޿߇㧘Ყ⴫㕙Ⓧߦ㑐ߒߡߪ F127-1 ߢో૕ߩ42 %߇ࡑࠗࠢࡠሹ↱᧪ߢ޽ࠆߎߣ߇᣿ࠄ߆ߣߥߞߚ㧚ߎߩߎߣߪ㧘ਥߦ೨ㅀߒߚ㊀ว૕ߣ⇇㕙ᵴᕈ೷ߩ⋧੕૞↪ߦ⿠࿃ߔࠆߣ⠨߃ࠄࠇࠆ㧚ߔߥࠊߜ㧘F127 ಽሶߦᒝߊๆ⌕ߐࠇߚ㊀ว૕ߪ㧘หಽሶࠍขࠅ
ㄟࠎߛ⁁ᘒߢ㛽ᩰ᭴ㅧࠍᒻᚑߒ㧘ߘߩᓟߩṁᇦ⟎឵߿⿥⥃⇇ੇ῎ᤨߦหಽሶ߇㒰෰ߐࠇࠆߎߣߦࠃߞ
ߡࡑࠗࠢࡠሹ߇ᒻᚑߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚⴫ 2 ᓧࠄࠇߚࠛࠕࡠࠥ࡞ߩ⚦ሹ․ᕈ

CodeF127-1
CTAB-1
CTAC-1

6BET/g cmí3
528
601
618

6micro/g cmí3
220
148
141

9micro/g cmí3
0.113
0.080
0.074

9p*1
/g cmí3
5.03
6.87
6.38

*1 ో⚦ሹኈⓍ 9p ߪ㧘ࡃ࡞ࠢኒᐲߣ㛽ᩰߩ⌀ኒᐲ㧔1.41 g cmí3㧕ࠃࠅ▚಴ߒߚ㧚ജቇ․ᕈ
วᚑߒߚ PMSQ ࠛࠕࡠࠥ࡞ߩജቇ․ᕈߦߟ޿ߡᬌ⸛
ߒߚ⚿ᨐࠍ␜ߔ㧚࿑ 7 ߦ৻ゲ࿶❗⹜㛎ߦࠃߞߡᓧࠄࠇߚ
ᔕജ㧙߭ߕߺᦛ✢ࠍ␜ߔ㧚⹜ᢱࠍ 50 %࿶❗ߒߚ޽ߣᔕജ
ࠍขࠅ㒰ߊߣ㧘޿ߕࠇߩ⹜ᢱ߽ 75 %⒟ᐲᄌᒻ࿁ᓳߔࠆߎ
ߣ߇᣿ࠄ߆ߣߥߞߚ㧚F127-1 ߣ CTAB-1 ߣߩ㑆ߦߪᄢ߈ߥ㆑޿߇⷗ࠄࠇߥ޿߇㧘CTAB-1 ߢߪ⹜㛎ਛߦᓸዊߥࠢ
࡜࠶ࠢ߇ᄙᢙ⊒↢ߒߚߩߦኻߒ㧘F127-1 ߢߪࠢ࡜࠶ࠢ߇
ⷰኤߐࠇߥ߆ߞߚ㧚ߎࠇߪ㧘࿑ 4 ߦ␜ߒߚᓸ⚦᭴ㅧߦ㑐ㅪߒߡ޿ࠆ㧚ߔߥࠊߜ㧘F127-1 ߢߪ⚦ሹ᭴ㅧࠍ᭴ᚑߔࠆ
☸ሶߤ߁ߒ߇ኒ⌕ߒߡ޿ࠆߩߦኻߒ㧘CTAB-1 ߢߪ☸ሶߤ߁ߒߩ❬߇ࠅߪᒙ޿㧚ߎߩߚ߼㧘CTAB-1 ߩᣇ߇㜞޿

࿑ 7 ฦ⹜ᢱߦ߅ߌࠆ৻ゲ࿶❗⹜㛎߆ࠄᓧ⣀ᕈࠍ᦭ߔࠆߣ⠨߃ࠄࠇࠆ㧚CTAC-1 ߪઁߩ 2 ߟࠃࠅ߽ࠄࠇߚᔕജ㧙߭ߕߺᦛ✢㧚ᨵࠄ߆ߊ㧘⣀ᕈ߇㜞޿௑ะ߇⷗ࠄࠇߚ߇㧘ߎࠇߪ᭴ᚑߔ

24ࠆ☸ሶࠨࠗ࠭ߩ㆑޿ߦࠃࠆ߽ߩߢ޽ࠈ߁㧚CTAC-1 ߩ☸ሶࠨࠗ࠭ߪ⚂ 8 nm ߣ CTAB-1 ࠃࠅ߽ዊߐߊ㧘
න૏૕Ⓧ޽ߚࠅߩࡀ࠶ࠢ㧔☸ሶߤ߁ߒߩㅪ⚿ㇱ㧕ᢙߪᄙߊ㧘ߘߩಽᄌᒻߒ߿ߔ޿ߎߣ߇ផኤߐࠇࠆ㧚ߐࠄߦ㧘಴⊒⚵ᚑࠍᦨㆡൻߒߚ⹜ᢱߦ߅޿ߡߪ㧘࿑ 8 ߦ␜ߒߚࠃ߁ߥ 80 %߽ߩᄢ࿶❗ᄌᒻߣ㧘߶߷ቢోߥᄌᒻ࿁ᓳ㧔޿ࠊࠁࠆࠬࡊ࡝ࡦࠣࡃ࠶ࠢ⃻⽎㧕߇⷗ࠄࠇߚ㧚ߎߩࠃ߁ߥࠬࡊ࡝ࡦࠣࡃ࠶ࠢࠍ઻߁
ᄢⷙᮨߥᄌᒻ᜼േߪߎࠇ߹ߢߦ߶ߣࠎߤⷰኤߐࠇߚ଀ߪήߊ[14]㧘․ߦㅘ᣿ߥࠛࠕࡠࠥ࡞ߢߪ⊝ήߢ޽ࠆ㧚ߎߩࠃ߁ߦ㧘࿶❗ᄌᒻߣࠬࡊ࡝ࡦࠣࡃ࠶ࠢ߇น⢻ߢ޽ࠆߣ޿߁ߎߣߪ㧘ḨẢࠥ࡞ߩṁᇦ⫳⊒ߦࠃࠆᏱ࿶ੇ῎߇น⢻ߢ޽ࠆߎߣ߇␜ໂߐࠇࠆ㧚ߔߥࠊߜ㧘೨ㅀߒߚࠃ߁ߦ㧘ṁᇦ⫳⊒ㆊ⒟ߦ߅ߌࠆ࿶
❗ᔕജߦኻߒߡ߽ห᭽ߦᄌᒻ࡮࿁ᓳߒ㧘⿥⥃⇇ੇ῎ߢᓧࠄࠇߚࠛࠕࡠࠥ࡞ߣห╬ߩᕈ⁁ࠍ␜ߔࠠ࠮ࡠ
ࠥ࡞߇ᓧࠄࠇࠆน⢻ᕈ߇޽ࠆ㧚ታ㓙ߦ㧘ᦨㆡൻߒߚ಴⊒⚵ᚑߦ߅޿ߡ㧘ૐ⴫㕙ᒛജṁᇦࠍ↪޿ߡᘕ㊀ߦੇ῎ߐߖࠆߣ㧘ᦨᄢߢ 250 mm ྾ᣇ㧔ෘߐ 10 mm㧕߽ߩᏂᄢߥࠛࠕࡠࠥ࡞
⁁ࠠ࠮ࡠࠥ࡞߇ᓧࠄࠇߡ޿ࠆ㧚ኒᐲ㧘శㅘㆊ₸᷹ቯߥߤ߆ࠄ㧘ߎߩࠠ࠮ࡠࠥ
࡞ߪࠛࠕࡠࠥ࡞ߣห╬ߩᕈ⾰ࠍ␜ߔߎߣ߇᣿ࠄ߆ߣߥߞߡ޿ࠆ㧚ߎߩࠃ߁ߦ㧘⿥⥃⇇ੇ῎ࠍ↪޿ࠆߎߣߥߊ㧘ࠛࠕࡠ
࿑ 8 ᦨㆡൻߒߚ CTAB ♽⹜ᢱߦ߅ߌࠆ࿶❗ᄢᄌᒻߣߘߩᓟ
ߩࠬࡊ࡝ࡦࠣࡃ࠶ࠢ⃻⽎㧚಴⊒⚵ᚑߪ㧘MTMS 5 mL㧘10 mM㈶㉄ 7 mL㧘CTAB 0.60 g㧘ዩ⚛ 0.5 g㧚ࠥ࡞⵾ㅧߩ◲⚛ൻ߇Ꮏᬺ⊛ߦ߽ታ⃻ߐࠇࠆߣ㧘ᢙ‫⥝ߩޘ‬๧ᷓ޿‛ᕈࠍ↪޿ߚᔕ↪߇ᐢ߇ࠆߎߣ߇ᦼᓙߐࠇࠆ㧚߅ࠊࠅߦ
ૐኒᐲߩᄙሹ૕ߦ߽߆߆ࠊࠄߕㅘ᣿ߢ޽ࠆߣ޿߁৻㘑ᄌࠊߞߚᕈ⾰ࠍ߽ߟࠛࠕࡠࠥ࡞ߩ᭎ⷐߣ㧘᦭ᯏ㧙ήᯏࡂࠗࡉ࡝࠶࠼ൻߦࠃࠆജቇ․ᕈᡷༀߦ㑐ߔࠆᚒ‫⎇ߩޘ‬ⓥࠍ⚫੺ߒߚ㧚ᓥ᧪ߩࠪ࡝ࠞࠛࠕࡠࠥ
࡞ߪ㕖Ᏹߦ㜞޿⣀ᕈࠍ␜ߒ㧘ߘߩᒝᐲ߇ᭂ߼ߡૐ޿ߎߣ߆ࠄ૞⵾࡮໡ᬺൻ߇࿎㔍ߢ޽ࠅ㧘‛ᕈ⎇ⓥ߿
ᔕ↪⎇ⓥ߇㒢ࠄࠇߡ߈ߚ㧚ḨẢࠥ࡞⥄૕ߪ࠱࡞㧙ࠥ࡞ᴺࠍ↪޿ߡ㧘․೎ߥ⸳஻߽ⷐߐߕߦวᚑߢ߈ࠆ
ߚ߼㧘ᧄⓂߢ␜ߒߚᏱ࿶ੇ῎น⢻ߥࠛࠕࡠࠥ࡞߇቟ቯ⊛ߦ૞⵾ߢ߈ࠆࠃ߁ߦߥࠇ߫㧘ߐࠄߦ⎇ⓥߩ᏷
߇ᐢ߇ࠆߣᕁࠊࠇࠆ㧚߹ߚ㧘ㅘ᣿ߢ㜞ᢿᾲᕈߢ޽ࠆᕈ⾰ࠍ೑↪ߒߡᑪㅧ‛↪ߩᢿᾲ⓹ߣߒߡߩᔕ↪߇ᬌ⸛ߐࠇߡ޿ࠆ߇㧘ᄢ㕙Ⓧߩࠛࠕࡠࠥ࡞࠲ࠗ࡞ߩวᚑ߇ኈᤃߦߥࠇ߫㧘ࠛࡀ࡞ࠡ࡯૶↪ߩ㜞ല₸ൻߦዋߒߢ߽⽸₂ߢ߈ࠆߛࠈ߁㧚⻢ㄉ ᧄ⎇ⓥߪ㧘ਛ⷏๺᮸ಎᢎ᝼߅ࠃ߮⧎↰⑓৻ᢎ᝼㧔੩ㇺᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼㧕ߣߩ౒ห⎇ⓥߢ޽ࠆ㧚߹ߚ㧘⎇ⓥߩᄾᯏࠍਈ߃ߡ޿ߚߛ޿ߚᦩỈ቞ඳ჻㧔㧔ᩣ㧕࠳ࠗ࠽࠶ࠢࠬ㧕ߦᷓ⻢ߔࠆ㧚ᧄ⎇ⓥߪ㧘⑼ቇ
⎇ⓥ⾌⵬ഥ㊄㧔⧯ᚻ⎇ⓥ(B) No. 20750177㧕߅ࠃ߮ GCOE ࡊࡠࠣ࡜ࡓ‫⑼⾰‛ޟ‬ቇߩᣂၮ⋚᭴▽ߣᰴ਎ઍ⢒ᚑ࿖㓙᜚ὐ‫⵬ࠅࠃޠ‬ഥࠍฃߌߡⴕߞߚ㧚ࠟࠬๆ⌕᷹ቯߦᔅⷐߥኙ೷ߩଏ⛎߿㧘FE-SEM ߅ࠃ߮ SAXSⵝ⟎ߩ೑↪ߦ㑐ߒߡ㧘੩ㇺᄢቇ LTM ࠮ࡦ࠲࡯ߦᗵ⻢↳ߒ਄ߍࠆ㧚ෳ⠨ᢥ₂
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25

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⪺⠪⇛ᱧ ㊄᫪ਥ␽㧔Kazuyoshi KANAMORI㧕 ੩ㇺᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼ൻቇኾ᡹ ഥᢎ
1977 ᐕ ᐢፉᏒ↢߹ࠇ
2000 ᐕ ੩ㇺᄢቇᎿቇㇱᎿᬺൻቇ⑼ තᬺ2002 ᐕ ੩ㇺᄢቇᄢቇ㒮Ꮏቇ⎇ⓥ⑼᧚ᢱൻቇኾ᡹ ඳ჻೨ᦼ⺖⒟ୃੌ
2005 ᐕ ห ඳ჻ᓟᦼ⺖⒟ୃੌ㧘ඳ჻㧔Ꮏቇ㧕
2007 ᐕ 2 ᦬ࠃࠅ⃻⡯E-mail: kanamori@kuchem.kyoto-u.ac.jp
Web site: http://kuchem.kyoto-u.ac.jp/mukibutsu/kanamori/26᦭ᯏዉ㔚૕ߦ߅ߌࠆᝄേಽశቇ⊛⎇ⓥ
Vibrational Spectroscopic Studies on Organic Conductors
ਛ㊁ ⟵᣿੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

Yoshiaki Nakano
Research Center for Low Temperature and Materials Sciences, Kyoto University
The molecular vibration can be probed through infrared and Raman spectroscopies, which are called ³vibration
spectroscopy´. The vibrational spectroscopy shows the advantageous feature on the analysis of the charge
disproportionation in organic solids. In this article, the analysis of the electronic structure of an organic conductor,(MeEDO-TTF)2PF6, is reviewed. The black plate modification of (MeEDO-TTF)2PF6 exhibited thesemiconductor-to-semiconductor phase transition at around room temperature. The donor molecules in both of
the high- and low-temperature phases showed similar packing patterns, based on which the tight-binding
approximation afforded the similar band structures and Fermi surfaces. The vibrational spectra proved that thenearly localized charge disproportionation takes place in the high-temperature phase and the distinct charge
disproportionation is developed in the low-temperature phase.

ߪߓ߼ߦ
⿒ᄖๆ෼ಽశᴺ߿࡜ࡑࡦಽశᴺߪᝄേಽశᴺߣ๭߫ࠇ㧘ಽሶᝄേߦ㑐ߔࠆᖱႎࠍᓧࠆߎߣ߇ߢ߈ࠆ㧚⹦⚦ߪᚑᦠ[1]ߦ⼑ࠆߣߒߡ㧘ᧄⓂߢߪ߹ߕᝄേಽశቇߩⷐὐߩߺࠍ◲නߦ߹ߣ߼㧘ߘߩᓟ㧘╩⠪߇㑐ࠊߞߚ⎇ⓥߩ 1 ߟࠍ଀ߣߒ⚫੺ߒ㧘ߎࠇࠄᝄേಽశᴺߩ᦭↪ᕈࠍ⺑᣿ߔࠆ㧚੹ᣣߢߪ㧘⿒ᄖๆ෼ࠬࡍࠢ࠻࡞ߪᲧセ⊛◲නߥᏒ⽼ߩⵝ⟎ߢ᷹ቯߢ߈ࠆߩߢ㧘᦭ᯏൻቇߩಽ㊁ߢߪൻว‛ߩหቯߦ↪޿ࠄࠇߡ޿ࠆ㧚․ߦಽሶਛߦሽ࿷ߔࠆቭ⢻ၮߪ․ᓽ⊛ߥᝄേࠍ␜ߒ㧘ߎࠇ߇⿒ᄖࠬࡍࠢ࠻࡞ߩ޽ࠆ৻ቯߩ㗔ၞߩๆ෼Ꮺߦኻᔕߔࠆߩߢ㧘․ቯߩቭ⢻ၮߩሽ࿷߇ߘߩๆ෼Ꮺߦࠃߞߡหቯ
ߔࠆߎߣ߇ߢ߈ࠆ㧚߹ߚ㧘߆ߥࠅ◲නߥಽሶߢ߽ⶄ㔀ߥࠬࡍࠢ࠻࡞ߣߥࠅ㧘ߤࠎߥ 2 ߟߩൻว‛߽ᱜ⏕ߦหߓࠬࡍࠢ࠻࡞ࠍ␜ߔߎߣߪߥ޿㧚․ߦ㧘1500 cmí1 ߩએਅߩ㗔ၞߪᜰ⚉㗔ၞߣ๭߫ࠇ㧘ߘߩࠬࡍࠢ࠻࡞ࡄ࠲࡯ࡦߪ‛⾰ߦ࿕᦭ߢ޽ࠆ㧚ߒߚ߇ߞߡ㧘ᧂ⍮ൻว‛ߣᣢ⍮ൻว‛ߩࠬࡍࠢ࠻࡞ࠍᾖวߒ㧘ਔࠬࡍࠢ࠻࡞߇ว⥌ߔࠇ߫ਔൻว‛߇ห৻ߢ޽ࠆߣ޿߁ࠃ޿⸽᜚ߣߥࠆ㧚৻ᣇ㧘࡜ࡑࡦಽశᴺߪ᦭ᯏൻቇߩಽ㊁ߢ৻⥸⊛ߦ↪޿ࠄࠇࠆ߽ߩߢߪߥ޿㧚⿒ᄖๆ෼ಽశᴺߣห᭽
ߦಽሶౝߩᝄേ╬ࠍᬌ಴ߔࠆಽశᴺߢ޽ࠆ߇㧘ㆬᛯೣߩ㆑޿߆ࠄ⿒ᄖಽశᴺߣߪ⋧⵬⊛ߥಽᨆᚻᴺߣ
ߥߞߡ޿ࠆ㧚࡟࡯ࠩ࡯శࠍ⹜ᢱߦᾖ኿ߒߡశߩᢔੂ߇⿠ߎࠆߣ߈㧘ᾖ኿శߣหߓᝄേᢙߢᢔੂ㧔࡟ࠗ࡝࡯ᢔੂ㧕ߔࠆశߣ⹜ᢱਛߩಽሶߩᝄേᢙಽߛߌ⿷ߐࠇߚ㧔޽ࠆ޿ߪ㧘ᒁ߆ࠇߚ㧕ᝄേᢙߢᢔੂ㧔࡜ࡑࡦᢔੂ㧕ߔࠆశ߇ሽ࿷ߔࠆ㧚౉኿శߣ࡜ࡑࡦᢔੂశߩᝄേᢙߣߩᏅߪ࡜ࡑࡦࠪࡈ࠻ߣ๭߫ࠇ㧘‛⾰ߩ᭴ㅧߦ․᦭ߩ୯ࠍߣࠆߎߣ߆ࠄ㧘⿒ᄖಽశᴺߣห᭽ߦಽሶߩ᭴ㅧ߿⁁ᘒࠍ⍮ࠆߚ߼ߩ㕖⎕უಽᨆᴺ
ߣߒߡ೑↪ߐࠇߡ޿ࠆ㧚Ȟ㧔cmí1㧕ߢ⴫ࠊߔߣ㧘ߜࠂ߁ߤᛒ޿߿ߔ޿ᄢ߈ߐߩ
ಽሶᝄേߩ႐ว㧘ᝄേᢙ Ȟ㧔sí1㧕ߢߪߥߊᵄᢙ ~27ᢙ㧔⒳‫ߩޘ‬ಽሶߩᝄേᢙߪ 4000㨪100 cmí1 ߩ㗔ၞߦ᷹ⷰߐࠇࠆ㧕ߦߥࠆߩߢ㧘න૏ߣߒߡߪㅢ଀ cmí1߇↪޿ࠄࠇࠆ㧚ߚߛߒ㧘ᝄേಽశቇߦ߅޿ߡߪ㧘ಽሶߩᝄേᢙߣ޿ߞߡ߽ᵄᢙߩߎߣࠍᜰߔ႐ว߇ߒ
߫ߒ߫޽ࠆ㧚
ߐߡ㧘⾰㊂ PA㧘PB ߩේሶ A㧘B ߆ࠄߥࠆ 2 ේሶಽሶࠍ⠨߃ߡߺmAࠃ߁㧔࿑ 1㧕
㧚ේሶ A ߣ B ߇੕޿ߦㄭߠ޿ߚࠅ㧘㆙ߑ߆ߞߚࠅߔࠆ

A

ᝄേࡕ࡯࠼߇޽ࠅ㧘ߎࠇࠍિ❗ࡕ࡯࠼ߣ๭߱㧚ߎߩ 2 ේሶಽሶߪ㧘߫ߨ㧔ൻቇ⚿ว㧕ߢߟߥ߇ࠇߚ 2 ߟߩ߅߽ࠅ㧔2 ේሶ㧕ߣ⠨߃ࠄࠇࠆߩߢ㧘޽ࠆᄌ૏ [ ߛߌߕࠇߚߣ߈ߦ૞↪ߔࠆജ߇ [ ߦᲧ଀ߔࠆߣ
޿߁ࡈ࠶ࠢߩᴺೣߦᓥ߁⺞๺ᝄേሶߣߺߥߔߎߣ߇ߢ߈ࠆ㧚ߎߎߢᲧ଀ቯᢙߪജߩቯᢙ㧔N㧕ߣ๭߫ࠇࠆ㧚ߎߩߣ߈㧘ജߩቯᢙ㧔N㧕
㧘឵

mB
B
k

A

B

࿑1 2 ේሶಽሶߩᝄേ㧚PA㧘
PB ߪේሶ A㧘B ߩ⾰㊂㧘N ߪജߩቯᢙ㧚▚⾰㊂㧔ȝ㧕
㧘ᝄേᢙ㧔Ȟ㧕ߪᰴߩᑼߢ㑐ଥߠߌࠄࠇࠆ㧚Ȟ㧔sí1㧕= (1/2ʌ) (N/ȝ)1/2㧘߹ߚߪ㧘Ȟ~㧔cmí1㧕= (1/2ʌF) (N/ȝ)1/2(1)ߎߎߢ㧘ȝ = PAPB/(PA + PB)㧘F ߪశㅦᐲߢ޽ࠆ㧚ߒߚ߇ߞߡ㧘ജߩቯᢙ㧔N㧕߇ᄢ߈ߊߥࠆ㧘ߔߥࠊߜ㧘⚿ว߇ᒝߊߥࠆߣᝄേᢙ㧔Ȟ㧕ߪᄢ߈ߊߥࠆ㧚߹ߚ㧘ᝄേߔࠆේሶߩ⾰㊂߇ዊߐ޿ߣᝄേᢙ߇ᄢ߈ߊߥ
ࠆ㧚଀߃߫㧘CŁC ⚿ว㧘C=C ⚿ว㧘CíC ⚿วࠍᲧセߔࠆߣ㧘N(CŁC) > N(C=C) > N(CíC)ߣߥࠆ㧚߹ߚ㧘᳓⚛㧔H 㧕ߣ㊀᳓⚛㧔D 㧕ߩિ❗ᝄേߢߪ㧘ജߩቯᢙߪหߓߢ߽⾰㊂ߩ㆑޿ߦࠃࠅ㧘Ȟ~(H )/Ȟ~(D ) =
2

2

2

2

4395.24/3118.46 ѩ 21/2 ߣߥߞߡ޿ࠆ㧚
Donor (D) layer᦭ᯏዉ㔚૕߳ߩᝄേಽశᴺߩㆡ↪
㔚᳇ࠍᵹߔ᦭ᯏ‛㧘ߟ߹ࠅ᦭ᯏዉ㔚૕ߪ৻⥸ߦઁߩಽሶߦ㔚ሶࠍਈ߃߿ߔ޿ಽሶ㧔࠼࠽࡯㧘D㧕ߣઁߩಽሶ߆
ࠄ㔚ሶࠍฃߌขࠅ߿ߔ޿ಽሶ㧔ࠕࠢ࠮ࡊ࠲࡯㧘A㧕߆ࠄߥࠆ㔚⩄⒖േ㍲૕ߣ๭߫ࠇࠆ‛⾰⟲ߦዻߔ㧚߹ߚ㧘ᓔ‫ޘ‬ߦߒߡ৻ᣇߩᚑಽߪ㧘଀߃߫ Bríߩࠃ߁ߦ㐽Ზࠗࠝࡦߢ
޽ࠆ႐ว߇޽ࠆ㧔Bríߪࠕࠢ࠮ࡊ࠲࡯ߢ޽ࠆ⥇⚛߇㔚ሶࠍ

D
D
D
D
D
D

A
A
A

D
D
D
D
D
D

ฃߌขߞߚ⁁ᘒߦ޽ࠆߣߒߡᛒࠊࠇࠆ㧕㧚ߎߎߢߪ㧘࠼࠽࡯ಽሶ㧔D㧕ߣ㒶ࠗࠝࡦ㧔A㧕߆ࠄߥࠅ㧘⚵ᚑ߇ D2A
ߢ⴫ࠊߐࠇࠆ᦭ᯏዉ㔚૕ߦߟ޿ߡ⠨߃ࠆ㧚ߘߩ⚿᥏᭴ㅧߩᮨᑼ࿑ࠍ࿑ 2 ߦ␜ߔ㧚৻⥸ߦ࠼࠽࡯ಽሶߪᐔ㕙⊛ߥᒻ

Anion (A) layer
࿑2 ࠼࠽࡯ಽሶ D ߣ㒶ࠗࠝࡦ A ߆ࠄߥࠆD2A ဳ᦭ᯏዉ㔚૕ߩ⚿᥏᭴ㅧߩᮨᑼ࿑㧚⁁㧔࿑ 2 ߢߪ㐳⚦޿㐳ᣇᒻߢ⴫ࠊߒߡ޿ࠆ㧕ࠍߒߡ߅ࠅ㧘
⚿᥏ਛߢߪߘࠇࠄ߇Ⓧߺ㊀ߥࠆߎߣߦࠃࠅⓍጀ᭴ㅧࠍߣࠆ㧚ߐࠄߦ㧘ኻᚑಽߣߥࠆ㒶ࠗࠝࡦ㧔࿑ 2 ߢߪਣߢ⴫ࠊߒߡ޿ࠆ㧕ߪ࠼࠽࡯ಽሶጀ㑆ߩ㓗㑆ߦሽ࿷ߔࠆ㧚ߒߚ߇ߞߡ㧘ౖဳ⊛ߥ᦭ᯏዉ㔚૕ߢߪ㧘࠼࠽࡯ಽሶጀߣ㒶ࠗࠝࡦጀ߇੤੕ߦⓍߺ㊀ߥߞߚ⚿᥏᭴ㅧߣߥߞߡ޿ࠆ㧚ߎߎߢ㧘D2A ߣ޿߁⚵ᚑߦߟ޿ߡ⠨߃ߡߺࠆ㧚㒶ࠗࠝࡦ㧔A㧕߇í1 ଔߢ޽ࠆߣߔࠆߣ㧘㔚᳇⊛ਛᕈࠍ଻ߟߚ߼ߦߪ࠼࠽࡯2 ಽሶ
ߢ+1 ଔߣߥࠄߥߌࠇ߫ߥࠄߥ޿㧚߽ߒ㧘+1 ଔߩ㔚⩄߇චಽߦ㕖ዪ࿷ൻߒߡ޿ࠇ߫㧘ోߡߩ࠼࠽࡯ಽ
ሶߪဋ৻ߩ+0.5 ଔߩ㔚⩄ࠍ᦭ߔࠆ㧔̖D0.5+D0.5+D0.5+D0.5+D0.5+̖㧕߇㧘+1 ଔߩ㔚⩄߇ߤߎ߆ߦዪ࿷ൻߒ
ߡ޿ࠆߣ㧘࠼࠽࡯ಽሶߪਇဋ৻ߥ+1 ଔߣ 0 ଔߩ㔚⩄ࠍ᦭ߔࠆ㧔଀߃߫㧘̖D0D+D0D+D0̖㧕ߎߣߦߥࠆ㧚ߟ߹ࠅ㧘㊄ዻߩࠃ߁ߦ㔚⩄߇㕖ዪ࿷ൻߒߡ޿ࠆ‛⾰ߢߪ㧘࠼࠽࡯ಽሶߩଔᢙߪဋ৻ߦߥࠆ߇㧘ඨ28ዉ૕ߩࠃ߁ߦ㔚⩄߇ዪ࿷ൻߒߚ‛⾰ߢߪ㧘㔚ሶ㑆ࠢ࡯ࡠࡦᢺജߩߚ߼ߦ㧘࠼࠽࡯ಽሶߩଔᢙ߇ਇဋ৻
ߦߥࠆ႐ว߇޽ࠅ㧘ߘࠇࠍ㔚⩄⒎ᐨ㧘޽ࠆ޿ߪ㧘㔚⩄ಽ㔌ߥߤߣ޿߁㧚หߓಽሶߢ߽ଔᢙ߇⇣ߥࠆߣ㧘ಽሶౝߩൻቇ⚿วߩᒝߐ߇ᄌൻߔࠆ㧚╙ 1 ▵ߢㅀߴߚࠃ߁ߦᵈ⋡ߒߡ޿ࠆಽሶᝄേߩᝄേᢙߪ⚿ว㧔ജߩቯᢙ N㧕߇ᒝߊߥࠇ߫㜞ߊߥࠅ㧘ㅒߦ⚿ว߇ᒙߊߥࠇ߫ૐߊߥࠆߩߢ㧘ߎߎߢಽሶᝄേߦ㑐ߔࠆᖱႎ߇ᓧࠄࠇࠆᝄേಽశᴺߩ಴⇟ߣߥࠆࠊߌߢ޽ࠆ㧚ߘࠇߢߪ㧘ታ㓙ߦ᦭ᯏዉ㔚૕ߦᝄേಽశᴺ߇ㆡ↪ߐࠇߚ଀ࠍ

NC

CN⷗ߡߺࠆߎߣߦߔࠆ㧚࿑ 3 ߦ␜ߔ TCNQ ߪฎߊ߆ࠄ⍮ࠄࠇߡ޿+eࠆࠕࠢ࠮ࡊ࠲࡯ಽሶߢ㧘ਛᕈ⁁ᘒߢߪ 2 ㊀⚿วߣන⚿ว߇࿑␜ߐ

eࠇߚㇱಽߦ㈩⟎ߐࠇߚࠠࡁࠗ࠼㛽ᩰߣ๭߫ࠇࠆ᭴ㅧࠍߣࠆ㧚ߣߎࠈ߇㔚ሶࠍ 1 ୘ฃߌขࠆߣਛᔃߩ 6 ຬⅣౝߩ⚿ว߇ 2 ㊀⚿วߣන

NC

CN

TCNQ0

NC

CN

NC

CN

TCNQ

⚿วߩਛ㑆⊛ߥ߽ߩߦᄌൻߔࠆ㧚ߎࠇߪࡌࡦ࠯ࡦߣห᭽ߩ⁁ᘒ㧔ࡌࡦ࠯ࡁࠗ࠼㛽ᩰ㧕ߢ޽ࠅ㧘߭ߣߟߩⅣߩਛߢ 6 ୘ߩǸ㔚ሶ߇㕖ዪ࿷ൻߔࠆߎߣߦࠃࠆ቟ቯൻ߇⿠߈ࠆ㧚ߎߩߚ߼ TCNQ ߪ㔚ሶࠍฃߌขࠅ߿ߔ޿ᕈ⾰ࠍᜬߟ㧚ߘߩߚ߼᭽‫࡝ࠞ࡞ࠕߥޘ‬㊄ዻߣߩ㔚⩄⒖േ㍲૕߇วᚑߐࠇ㧘ߘߩ᭴ㅧ߿‛ᕈ߇⺞ߴࠄࠇߡ޿ࠆ㧚

࿑3 TCNQ ಽሶߦ߅ߌࠆ㔚ሶߩ
᝼ฃㆊ⒟ࠍൻቇ᭴ㅧᑼߦࠃ
ࠅ⴫ࠊߒߚ߽ߩ㧚TCNQ0 ߪਛ
ᕈ㧘TCNQíߪ㒶ࠗࠝࡦ࡜ࠫࠞ
࡞ࠍ⴫ࠊߒߡ޿ࠆ㧚

Cs2(TCNQ)3 ㍲૕[2]ߢߪ㧘X ✢᭴ㅧ⸃ᨆߦࠃࠅ⚿᥏ਛߦí1 ଔߩ TCNQ ಽሶߦㄭ޿⚿ว㐳ࠍ᦭ߔࠆಽሶ
ߣ 0 ଔ㧔ਛᕈ㧕ߩ TCNQ ಽሶߦㄭ޿⚿ว㐳ࠍ᦭ߔࠆಽሶ߇ሽ࿷ߔࠆߎߣ߇ಽ߆ߞߡ޿ߚ[3]㧚Girlandࠄߪ㧘Cs2(TCNQ)3 ㍲૕ߩ⿒ᄖ࡮࡜ࡑࡦࠬࡍࠢ࠻࡞ࠍ᷹ቯߒ㧘ߎߩ㍲૕ਛߦ߅޿ߡ TCNQíߣ TCNQ0 ߇౒ሽߒߡ޿ࠆߎߣࠍ⷗಴ߒߡ޿ࠆ[4]㧚ߎߩ⎇ⓥߪ᦭ᯏዉ㔚૕ߦ߅޿ߡ㧘㔚⩄߇ਇဋ৻ߦߥߞߡ޿ࠆߎ
ߣࠍᝄേಽశᴺߦࠃߞߡታ⸽ߒߚೋ߼ߡߩ଀ߣߥߞߡ޿ࠆ㧚߹ߚ㧘᧻ፒࠄߪ৻ㅪߩ TCNQ ㍲૕ߩ࡜ࡑࡦࠬࡍࠢ࠻࡞ࠍ᷹ቯߒ㧘TCNQ ߩ C=C િ❗ᝄേߢ޽ࠆ Ȟ4 ࡕ࡯࠼[5,6]㧔ᝄേಽశቇߢߪ㧘ฦᝄേࡕ࡯࠼ߦ Ȟi ߣ޿߁ฬ೨߇ઃߌࠄࠇࠆ㧕ߩᝄേᢙߣଔᢙߩ㑆ߦ✢ᒻ㑐ଥ߇ᚑࠅ┙ߟߎߣࠍ⷗಴ߒߡ޿ࠆ[7]㧚ᝄേᢙߣଔᢙ߇න⚐ߥ✢ᒻ㑐ଥߢ⚿߫ࠇߡ޿ࠆߩߪਇᕁ⼏ߦᕁ߃ࠆ߆߽ߒࠇߥ޿߇㧘ਛᕈሶᢔੂ[8]㧘X✢ᢔẂᢔੂ[9]㧘ಽሶߩ⚿ว㐳[10]㧘XPS [11]߆ࠄ⷗Ⓧ߽ߞߚଔᢙߣ৻⥌ߒߡ޿ࠆߎߣ߆ࠄ߽㧘ߎߩ㑐ଥᑼ߇ሽ࿷ߔࠆߎߣࠍⵣઃߌߡ޿ࠆ㧚ߎߩࠃ߁ߥ㑐ଥᑼࠍ↪޿ࠆߣ㧘ᧂ⍮⹜ᢱਛߩಽሶߩଔᢙࠍಽሶ
ᝄേߩᝄേᢙ߆ࠄ◲ଢߦ᳿ቯߔࠆߎߣ߇น⢻ߣߥࠆ㧚ቶ᷷ઃㄭߢඨዉ૕㧙ඨዉ૕ォ⒖ࠍ␜ߔ /G'&166( 2(ߢߪ㧘╩⠪߇៤ࠊߞߚ⎇ⓥࠍ⚫੺ߔࠆ㧚(EDO-TTF)2PF6 ߪ 280 K ߢ㓙┙ߞߚಽሶᄌᒻࠍ઻߁㊄ዻ㧙⛘✼૕ォ⒖ࠍ⿠ߎߒ㧘ߎߩォ⒖ߢߪࡄࠗࠛ
࡞ࠬ㧘㔚⩄⒎ᐨൻ㧘㒶ࠗࠝࡦ⒎ᐨൻߣ޿߁ 3 ߟߩᯏ᭴߇දห⊛ߦ⊒⃻ߒ

O

S

S

O

S

S

R

EDO-TTF: R = H
MeEDO-TTF: R = CH3

ߡ޿ࠆߎߣ߇ಽ߆ߞߡ޿ࠆ[12]㧚ߐࠄߦ㧘ߎߩ㍲૕ߢߪ⿥㜞ㅦ࡮㜞ല₸ߩశ⺃⿠⛘✼૕㧙㊄ዻォ⒖߇
⷗಴ߐࠇ㧘ᒝ޿㔚ሶ㧙ᩰሶ㧔ᝄ㔚㧕⋧੕૞↪ߩሽ࿷߇ᜰ៰ߐࠇߡ޿ࠆ[13]㧚(EDO-TTF)2PF6 ߦߟ޿ߡߪ
ᧄ⹹ߦ߅޿ߡ߽એ೨ߦ⚫੺⸥੐߇ឝタߐࠇߡ޿ࠆߩߢ㧘ߘߜࠄ߽૬ߖߡෳᾖߐࠇߚ޿[14]㧚ᚒ‫ߪޘ‬㧘
(EDO-TTF)2PF6 ߩࠃ߁ߦᄙ㊀ਇ቟ቯᕈࠍ᦭ߒ㧘ᄖ႐ߦኻߒߡᏂᄢᔕ╵ࠍ␜ߔ⋧ォ⒖‛⾰ߩ㐿ᜏࠍⴕ߁ߚ߼ߦ㧘EDO-TTF ߣห⒟ᐲߩࠨࠗ࠭ߣǸ㔚ሶ♽ࠍ᦭ߔࠆ㘃✼૕ߩᬌ⸛ࠍⴕ߁ߎߣߦߒߚ㧚ᚻᆎ߼ߦEDO-TTF ߦࡔ࠴࡞㧔CH3 㧕ၮࠍ㧝ߟዉ౉ߒߚ࠼࠽࡯ಽሶߢ޽ࠆ MeEDO-TTF ߩ⎇ⓥࠍᆎ߼ߚ㧚
MeEDO-TTF ߩ⎇ⓥࠍᆎ߼ߚߣ߈ߦߪ㧘MeEDO-TTF ߪᣢ⍮ൻว‛ߢ޽ߞߚ[15]߇㧘ᣢႎߩ෼₸ࠍ⿥߃ࠆ MeEDO-TTF ߩวᚑᴺࠍ⏕┙ߒ[16]㧘ߘߩ㍲૕ߩ‛ᕈ⎇ⓥߦߣࠅ߆߆ߞߚ㧚
MeEDO-TTF ߣ PF6 㒶ࠗࠝࡦࠍ฽߻㔚⸃ṁᶧࠍ㔚⸃㉄ൻߔࠆߎߣߦࠃࠅ㧘㤥⦡☳ᧃ㧘ᥧ✛⦡᧼⁁⚿29᥏㧘㤥⦡᧼⁁⚿᥏߇ᓧࠄࠇࠆ[17]㧚ߎࠇࠄ 3 ⒳ߩ㍲૕ߪ㧘ోߡ(MeEDO-TTF)2PF6 ߣ޿߁⚵ᚑࠍ᦭ߒߡ
޿ࠆ߇㧘⴫ 1 ߦ␜ߔࠃ߁ߦ㤥⦡☳ᧃߪቶ᷷߆ࠄඨዉ૕⊛ዉ㔚᜼േࠍ␜ߒ㧘ᥧ✛⦡᧼⁁⚿᥏ߪ㊄ዻ㧙⛘✼૕ォ⒖㧘㤥⦡᧼⁁⚿᥏ߪඨዉ૕㧙ඨዉ૕ォ⒖ࠍ␜ߔ㧚3 ⒳ߩ㍲૕ߪ㔚ሶㆫ⒖㗔ၞߢߪ߶߷หߓࠃ߁
ߥๆ෼ࠬࡍࠢ࠻࡞ࠍਈ߃ࠆ߽ߩߩ㧘ዉ㔚․ᕈ㧘⏛᳇‛ᕈߩ㆑޿ࠍ⠨߃ࠆߣ 3 ⒳ߩ㍲૕ߩ᭴ㅧ߇⇣ߥߞߡ޿ࠆߣᗐ௝ߐࠇࠆ㧚ߒ߆ߒߥ߇ࠄ㧘᭴ㅧ⸃ᨆߦᚑഞߒߡ޿ࠆߩߪ㤥⦡᧼⁁⚿᥏ߩߺߢ޽ࠅ㧘એਅ㧘㤥⦡᧼⁁⚿᥏ߩ⹦⚦ߦߟ޿ߡㅀߴࠆ㧚
⴫1㧚(MeEDO-TTF)2PF6ߩๆ෼ࠬࡍࠢ࠻࡞㧘ዉ㔚․ᕈ㧘⏛᳇‛ᕈ [17]ᥧ✛⦡᧼⁁⚿᥏

3.2, 14, 33㤥⦡᧼⁁⚿᥏

3.1, 14, 31

ı㧔S cmí1㧕3 (300 K), SD
30 (300 K)
7MIE = 200 K
4 (305 K), SD
0.07 (300 K), SD(a㧔meV㧕
100 (300 K)Ȥ㧔emu molí1㧕
3.9 (300 K)

16 (140 K)

2.3 (300 K)

34 (305 K)
400 (300 K)

4.5 (305 K)
5.4 (300 K)

Sߪඨዉ૕ࠍ␜ߔ㧚E 7MIߪ㊄ዻ㧙⛘✼૕ォ⒖᷷ᐲࠍ␜ߔ㧚(a)ߦ߅޿ߡ㔚᳇ᛶ᛫₸߇ਇㅪ⛯ߥ㘧߮ࠍ␜ߒߚ㧚߹ߚ㧘㜞᷷⋧ߢߩᵴᕈൻࠛࡀ࡞ࠡ࡯ߪ 34 meV㧘ૐ᷷⋧ߢߩᵴᕈൻࠛࡀ࡞ࠡ࡯ߪ 400

log ( /

ߩ᷷ᐲଐሽᕈࠍ␜ߔ㧚᣹᷷ᤨߦߪ⚂ 304 K㧘㒠᷷ᤨߦߪ⚂ 302 Kcm)

࿑ 4 ߦ(MeEDO-TTF)2PF6 㤥⦡᧼⁁⚿᥏ߩ㔚᳇ᛶ᛫₸ߣ⏛ൻ₸meV ߢ޽ࠅ㧘⋧ォ⒖ߦ߅޿ߡ㔚᳇વዉᐲ߇⚂ 60 ୚ᄌൻߒߡ޿ࠆ

6

6

4

4

2

2

0
0

ߎߣ߇ಽ߆ߞߚ㧚ߒߚ߇ߞߡ㧘ߎߩ㍲૕ߪ 303 K ઃㄭߢඨዉ૕㧙

100

200

/ 10 4 emu mol 1

D

㤥⦡☳ᧃ

ๆ෼Ꮺ૏⟎㧔103 cmí1㧕
3.1, 14, 32

0300 350

T/K

ඨዉ૕ォ⒖ࠍ⿠ߎߒߡ޿ࠆ㧚⏛ൻ₸ߩ᷷ᐲଐሽᕈߦߟ޿ߡ߽ห᭽ߩਇㅪ⛯ߥ㘧߮߇⷗ࠄࠇ

(b)
1.5

㊄ዻ⊛᜼േࠍ␜ߔ(MeEDO-TTF)2X㧔X = BF4㧘ClO4㧕㍲૕ߩ⏛ൻcm)₸ߩ᷷ᐲଐሽᕈߦૃߡ޿ࠆߎߣ߇ಽ߆ߞߚ㧚Ყセ⊛ᄢ߈ߥ⏛ൻ₸log ( /

ࠆ㧚߹ߚ㧘305 K એ਄ߩ㜞᷷⋧ߦ߅ߌࠆ⏛ൻ₸ߩ᷷ᐲଐሽᕈߪ㧘ࠍ⠨ᘦߔࠆߣ㧘㔚ሶ⋧㑐ߦࠃࠅ㔚⩄߇ዪ࿷ൻߒߡ޿ࠆߎߣࠍ߁߆
߇ࠊߖࠆ㧚ߎߩࠃ߁ߥ‛ᕈ߇⊒⃻ߔࠆࡔࠞ࠾࠭ࡓࠍ᣿ࠄ߆ߦߔࠆߚ߼ߦ㧘ߎߩ㍲૕ߩ᷷ᐲนᄌ X ✢᭴ㅧ⸃ᨆࠍⴕߞߚߣߎࠈ㧘ᐘㆇߥߎߣ
ߦ᣹᷷ᤨߩ 302 K㧘㒠᷷ᤨߩ 302 K ߦ߅޿ߡ㧘ૐ᷷⋧ߣ㜞᷷⋧ߩ᭴ㅧ⸃ᨆߦᚑഞߔࠆߎߣ߇ߢ߈ߚ㧚࿑ 5 ߦ(MeEDO-TTF)2PF6 㤥⦡᧼⁁⚿᥏ߩ⚿᥏᭴ㅧࠍ␜ߔ㧚㜞᷷⋧㧘ૐ᷷⋧ߣ߽ߦ
MeEDO-TTF ߪ 1 ಽሶ߇⚿᥏ቇ⊛ߦ⁛┙ߢ޽ࠅ㧘⚿᥏᭴ㅧߪ߶߷
หߓߢ޽ߞߚ㧚߹ߚ㧘㜞᷷⋧ߩ᭴ㅧߪ㧘㊄ዻ⊛᜼േࠍ␜ߔ

1.0 L

phase

0.5
0.0
-0.5
-1.0
300

H phaseHeating
Cooling
301

302

303

304

305

306

T/K

࿑4 (a) (MeEDO-TTF)2PF6 㤥⦡᧼⁁⚿᥏ߩ㔚᳇ᛶ᛫₸㧔ȡ㧕ߣ⏛ൻ₸㧔Ȥ㧕ߩ᷷ᐲଐሽᕈ㧚(b) 㔚᳇ᛶ᛫₸ߢ᷹ⷰߐࠇߚࡅࠬ࠹
࡝ࠪࠬ࡞࡯ࡊ㧚࿑ 4 એ㒠ߩ࿑ߪ㧘ᢥ₂ 17 ࠃࠅ⸵นࠍᓧߡォタ㧘߹ߚߪ㧘৻ㇱᡷᄌ㧚

(MeEDO-TTF)2X㧔X = BF4㧘ClO4㧕[16]ߣหᒻ᭴ㅧߢ޽ࠆߎߣ߇ಽ߆ߞߚ㧚MeEDO-TTF ಽሶߪ F ゲᣇะߦߪ head-to-head ဳߢⓍߺ㊀ߥߞߡ߅ࠅ㧘E ゲᣇะߦߪ㓞ធߔࠆಽሶ㑆ߩ⎫㤛ේሶߩ㑆ߦࡈࠔࡦ࠺࡞
ࡢ࡯࡞ࠬඨᓘࠃࠅߩ๺ࠃࠅ߽⍴޿ធ⸅߇⷗ࠄࠇߚ㧚ߒߚ߇ߞߡ㧘MeEDO-TTF ಽሶߪ EF 㕙ౝߦ 2 ᰴర
⊛ߦ㈩೉ߒߡ޿ࠆ㧚߹ߚ㧘৻⥸⊛ߥ᦭ᯏዉ㔚૕ߦ⷗ࠄࠇࠆࠃ߁ߦ㧘࠼࠽࡯ಽሶጀߣ㒶ࠗࠝࡦጀ߇੤੕
ߦⓍߺ㊀ߥߞߚ᭴ㅧࠍߒߡ޿ࠆߎߣ߇ಽ߆ࠆ㧚ߒ߆ߒߥ߇ࠄ㧘㜞᷷⋧ߣૐ᷷⋧ߩ࠼࠽࡯ጀࠍ⹦ߒߊ⷗
ߡߺࠆߣ㧘ಽሶ⍴ゲᣇะ߆ࠄ㓞ធߔࠆಽሶࠍ⌑߼ߚߣ߈㧘ಽሶ㕙ߩߥߔⷺ Ȧ ߇⇣ߥߞߡ޿ࠆߎߣ߇ಽ

30

D߆ߞߚ㧚302 K ߢᲧセߒߚ႐ว㧘㜞᷷⋧ߢߪ㧘Ȧ = 0°㧘ߔߥࠊߜ㧘ಽሶE⍴ゲᣇะߦ㓞ធߔࠆಽሶߪᐔⴕߦ

F

ਗࠎߢ޿ࠆ߇㧘ૐ᷷⋧ߢߪ㧘Ȧ = 4°ߛߌಽሶ㕙߇ߨߓࠇߡ޿ࠆ㧚߹ߚ㧘

PF6 㒶ࠗࠝࡦߦߟ޿ߡߪ㧘㜞᷷⋧ߢߪ㧘߶߷╬ᣇ⊛ߥ࿁ォ࠺ࠖࠬࠝ࡯࠳
࡯߇⷗ࠄࠇߚ߇㧘ૐ᷷⋧ߢߪ㧘࠺ࠖ

Vࠬࠝ࡯࠳࡯ߩ᭽ሶ߇ 1 ゲ⊛ߦߥࠆ㧚V 302 K ߢᓧࠄࠇߚ⚿᥏᭴ㅧ㧔࿑5(d)㧕ࠍၮߦߒߡ㧘᜛ᒛࡅࡘ࠶ࠤ࡞
ᴺߦࠃࠅ㓞ធߔࠆ MeEDO-TTF ಽሶߩᦨ㜞ⵍභ゠㆏㧔HOMO㧕㑆ߩ㊀ߥ
ࠅⓍಽࠍ⸘▚ߒߚߣߎࠈ㧘⴫ 2 ߩࠃ߁ߦߥߞߚ㧚㜞᷷⋧ߣૐ᷷⋧ߢಽሶ⍴ゲᣇะߩಽሶ㕙ߩߥߔⷺȦ߇ᄌൻߔࠆߎߣࠍ෻ᤋߒߡ㧘㊀ߥࠅⓍಽ F
ߩ୯߇ૐ᷷⋧ߢዊߐߊߥߞߡ޿ࠆ
ߎߣ߇ಽ߆ࠆ㧚߹ߚ㧘PF6 Ⴎߣ㊄ዻ⊛᜼േࠍ␜ߔ(MeEDO-TTF)2X㧔X =BF4㧘ClO4㧕ߩ㊀ߥࠅⓍಽ୯ߣᲧセߔࠆߣ㧘㊀ߥࠅⓍಽ V㧘S ߪห⒟ᐲߢ
޽ࠆ߇㧘㊀ߥࠅⓍಽ F ߇ BF4 Ⴎ㧘ClO4
Ⴎࠃࠅ߽ዊߐߊ㧘⛘ኻ୯߇ 10×10í3

E


D

D

F

E

F

F
S
S

S

V
F

V

F

S

V
F

F

V

F

G



࿑5 (MeEDO-TTF)2PF6 㤥⦡᧼⁁⚿᥏ߩ⚿᥏᭴ㅧ㧚(a) 㜞᷷⋧ߩ⚿᥏᭴ㅧࠍ F ゲᣇะ߆ࠄ⷗ߚ࿑㧔302 K㧕㧚ૐ᷷⋧ߩ⚿᥏᭴ㅧࠍ࿑␜ߒߚ႐ว㧘ࡈ࠶⚛ේሶߩ᷷ᐲ࿃ሶએᄖߪ߶߷หߓ
ߦߥࠆ㧚] = 1/4 ߦ޽ࠆ MeEDO-TTF ಽሶߪἯ⦡ߦߒߡ޿ࠆ㧚(b) ૐ᷷⋧ߦ߅޿ߡಽሶ⍴ゲᣇะߦ㓞ធߔࠆ MeEDO-TTF
ಽሶࠍಽሶ⍴ゲᣇะ߆ࠄ⷗ߚ࿑㧚Ȧ ߪ㓞ធಽሶ㑆ߩಽሶ㕙߇ߥߔⷺࠍ⴫ࠊߔ㧚㜞᷷⋧ߢߪ Ȧ = 0°㧘ૐ᷷⋧ߢߪ Ȧ = 4°(302 K)㧘6° (110 K)㧚(c) ૐ᷷⋧ߦ߅ߌࠆ PF6 㒶ࠗࠝࡦߩ㈩೉㧔110 K㧕㧚ὐ✢ߪ PF6 㒶ࠗࠝࡦ߇ 1 ゲ࿁ォࠍߒߡ޿ࠆߣ
߈ߩ⿒㆏㕙ࠍ⴫ࠊߔ㧚ș ߪ㧘[ = 0 ߣ [ = 1/2 ߦ޽ࠆ PF6 㒶ࠗࠝࡦߩ⿒㆏㕙߇ߥߔⷺࠍ⴫ࠊߔ㧚ș = 19.9° (302 K)㧘20.8°(110 K)㧚(d) [ = 1/4 ߦ޽ࠆ࠼࠽࡯ಽሶጀࠍ D ゲᣇะ߆ࠄ⷗ߚ
࿑㧚F㧘V㧘S ߪ࠼࠽࡯ಽሶߩ HOMO 㑆ߩ㊀ߥࠅⓍಽࠍ⴫ࠊߔ㧚એਅߦߥߞߡ޿ࠆ㧚ߟ߹ࠅ㧘ߎߩ♽ߢߪ㊀ߥࠅⓍಽߩᄢ߈ߐߣߒߡ㧘10×10í3 ߣ޿߁୯߇㊄ዻ⊛᜼േࠍ␜ߔ߆㧘޽ࠆ޿ߪ㧘ඨዉ૕ߢ޽ࠆߩ߆ߩႺ⇇ߦߥߞߡ޿ࠆࠃ߁ߢ޽ࠆ㧚߹ߚ㧘㜞᷷⋧ߣૐ᷷⋧ߩ⚿᥏᭴ㅧࠍၮߦߒߡᒝ᧤❈ㄭૃߦࠃࠆࡃࡦ࠼⸘▚ࠍⴕ߁ߣ㧘࿑ 6 ߦ␜ߔࠃ߁ߦ⷗ಽߌ߇ߟ߆ߥ޿߶ߤ㧘߶߷หߓࠃ߁ߥ⚿ᨐ߇ᓧࠄࠇߚ㧚ᒰὼߥ߇ࠄ㧘หᒻߩ(MeEDO-TTF)2BF4 ߽ห᭽ߩࡃࡦ࠼⸘▚ߩ⚿ᨐࠍਈ߃ࠆ[16]㧚ߒߚ߇ߞߡ㧘⚿᥏᭴ㅧ߿ߘࠇߦၮߠ޿ߚᒝ᧤❈ㄭૃߦࠃࠆࡃࡦ࠼⸘▚ߩ⚿ᨐ߆ࠄߪ㧘(MeEDO-TTF)2X㧔X = BF4㧘ClO4㧕߇㊄ዻ⊛ߢ޽ࠆߩߦኻߒߡ㧘ߥߗ(MeEDO-TTF)2PF6 ߇ඨዉ૕ߢ޽
ࠆߩ߆ࠍ⺑᣿ߔࠆߎߣߪߢ߈ߥ޿㧚ߘߎߢ㧘ᝄേಽశᴺߦࠃࠅߐࠄߦ⸃ᨆࠍㅴ߼ࠆߎߣߦߒߚ㧚
⴫2㧚(MeEDO-TTF)2X㧔X = BF4㧘ClO4㧘PF6㧕ߩዉ㔚ᕈ㧘HOMOߩಽሶ㑆㊀ߥࠅⓍಽ㧔F㧘V㧘S㧕㧘ࡃࡦ࠼᏷
㧔:㧕[17]Xዉ㔚ᕈF / 10í3
V / 10í3
S / 10í3: / eV
BF4
㊄ዻ
11.8
í5.1
8.3
0.80
ClO4
㊄ዻ
11.3
í5.2
8.5
0.79
ඨዉ૕
í9.9
4.9
8.5
0.74
PF6 㜞᷷⋧
ඨዉ૕
í9.2
4.9
í8.5
0.70
PF6 ૐ᷷⋧⒖േⓍಽ㧔W㧕ߪ㧘HOMOߩࠛࡀ࡞ࠡ࡯㧔(㧕ߣ㊀ߥࠅⓍಽ㧔6㧕ࠃࠅ㧘W = (×6㧔( § í10 eV㧕ߣߒߡ⷗Ⓧ߽
ࠄࠇࠆ㧚

31

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<0=0'26

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0

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<0=0'26

D  E
࿑6 ᒝ᧤❈ㄭૃߦࠃࠆࡃࡦ࠼⸘▚ߢᓧࠄࠇߚࠛࡀ࡞ࠡ࡯ಽᢔ㧘⁁ᘒኒᐲ㧔DOS㧕
㧘ࡈࠚ࡞ࡒ㕙㧚(a) 㜞᷷⋧㧚(b) ૐ᷷⋧㧚

TTF [18] 㧘 BEDT-TTF [19] 㧘 BEDO-TTF [20] ߣ ޿ ߞ ߚ
MeEDO-TTFߣⷫᚘ㑐ଥߦ޽ࠆࠃ߁ߥಽሶߢߪ㧘ಽሶߩଔᢙࠍ
᳿ቯߔࠆߚ߼ߦ㧘C=Cિ❗ࡕ࡯࠼ߩᝄേᢙ߇ࠃߊ೑↪ߐࠇߡ޿ࠆ㧚ߎࠇߪ㧘ߎࠇࠄߩಽሶߩC=Cિ❗ࡕ࡯࠼߇㧘ಽሶߩଔᢙߦ
ᔕߓߡᢅᗵߦࠪࡈ࠻ߔࠆ߆ࠄߢ޽ࠆ㧚ߘߎߢ㧘MeEDO-TTF ߩᝄേࠬࡍࠢ࠻࡞ߩ᷹ቯߣࠬࡍࠢ࠻࡞

X

S

S

Y

X

S

S

Y

TTF: X = Y = H
BEDT-TTF: 2X = 2Y = SCH2CH2S
BEDO-TTF: 2X = 2Y = OCH2CH2O

ߩᏫዻࠍߔࠆߚ߼ߦ B3LYP/6-31G(d,p)ᴺߦࠃࠅ㧘ಽሶ゠㆏⸘▚㧘ၮḰᝄേ⸃ᨆࠍⴕߞߚ㧚࿑ 7 ߦ MeEDO-TTF ߩ HOMO ࠍ␜ߔ㧚
C=C ⚿วߩㇱಽߦ⌕⋡ߒߡߺࠆߣ㧘゠㆏ߩ૏⋧߇ห૏⋧㧘ߔߥࠊߜ㧘⚿วᕈߦߥߞߡ޿ࠆߎߣ߇ಽ߆ࠆ㧚ߎߩߎߣߪ㧘HOMO
߆ࠄ 1 ߟ㔚ሶ߇ᛮߌࠆߣ㧘⚿วᕈ゠㆏߆ࠄ㔚ሶ߇ᛮߌࠆߩߢ㧘

࿑7 MeEDO-TTF ߩ HOMO.

⚿ว߇ᒙߊߥࠆߎߣࠍᗧ๧ߒߡ޿ࠆ㧚ߢߪ㧘ಽሶߩଔᢙ߇ 0 ଔ߆ࠄ+1 ଔߦᄌൻߒߚߣ߈ߦ㧘ߤߩ⒟ᐲᝄേᢙ߇ࠪࡈ࠻ߔࠆߢ޽ࠈ߁߆㧚ၮḰᝄേ⸃ᨆߦࠃߞߡᓧࠄ
ࠇߚ MeEDO-TTF0㧔0 ଔ㧕ߣ MeEDO-TTF+㧔+1 ଔ㧕ߩ C=C િ(a) MeEDO-TTF0(b) MeEDO-TTF+

1655

1561

1607

1519

1541

1397



❗ࡕ࡯࠼ࠍ࿑ 8 ߦ␜ߔ㧚3 ߟߩ C=C િ❗ࡕ࡯࠼ߩ߁ߜ㧘Ȟ9㧘Ȟ10ࡕ࡯࠼ߪ߅߅ࠃߘ 5 ຬⅣㇱಽߩ C=C િ❗ߦ㑐ߒߡ㧘ߘࠇߙࠇ㧘 ห૏⋧㧘߅ࠃ߮㧘ㅒ૏⋧ߣߥߞߡ޿ࠆᝄേࡕ࡯࠼㧘Ȟ11 ࡕ࡯࠼ߪ㧘
5 ຬⅣࠍ᨞ᯅߒߡ޿ࠆਛᄩߩ C=C ⚿วߩિ❗ࡕ࡯࠼ߢ޽ࠆߣߺ
ߥߔߎߣ߇ߢ߈ࠆ㧚߹ߚ㧘ଔᢙ߇ 0 ଔ߆ࠄ+1 ଔߦᄌൻߔࠆߣ㧘
Ȟ9㧘Ȟ10㧘Ȟ11 ࡕ࡯࠼ߪ㧘ߘࠇߙࠇ㧘94㧘88㧘144 cmí1 ⒟ᐲૐᵄᢙ
ࠪࡈ࠻ߔࠆߣ੍ᗐߐࠇߚ㧚ߎࠇ߶ߤᄢ߈ߊࠪࡈ࠻ߔࠇ߫㧘Ꮢ⽼ߩಽశ⸘ߢ߽♖ᐲࠃߊଔᢙߩ㆑޿ࠍᬌ಴ߢ߈ࠆߪߕߢ޽ࠆ㧚࿑ 9 ߦቶ᷷ߢ᷹ቯߒߚ⿒ᄖࠬࡍࠢ࠻࡞ࠍ␜ߔ㧚߹ߕ㧘

࿑8 MeEDO-TTF0 ߣ(b) MeEDO-TTF+
ߩ C=C િ❗ࡕ࡯࠼㧚ฦࡕ࡯࠼ߩ
ਅߩᢙ୯ߪ⸘▚ߦࠃߞߡᓧࠄࠇ
ߚᵄᢙ㧔cmí1㧕
㧚

MeEDO-TTF ਛᕈߣ(MeEDO-TTF)FeBr4 ߩࠬࡍࠢ࠻࡞ߦᵈ⋡ߒߡߺࠆ㧚ߎࠇࠄߩࠬࡍࠢ࠻࡞ߪ㧘ߘࠇߙࠇ㧘MeEDO-TTF0 ߣ MeEDO-TTF+ߩࠬࡍࠢ࠻࡞ߢ޽ࠆ㧚ߎߩ
㧘CH3 ᄌ
ࠬࡍࠢ࠻࡞㗔ၞߦߪ㧘C=C િ❗ᝄേߢ޽ࠆ Ȟ9㧘Ȟ10㧘Ȟ11 ࡕ࡯࠼એᄖߦ㧘CH2 ߪߐߺ㧔Ȟ12㧘Ȟ14㧕
㧘CH2 ❑ࠁࠇ㧔Ȟ17㧘Ȟ18㧕
㧘CH2 ߭ߨࠅ㧔Ȟ19㧘Ȟ20㧕ߦᏫዻߐࠇࠆࡃࡦ࠼߽᷹ⷰߐࠇࠆ߇㧘ⷺ㧔Ȟ13㧘Ȟ15㧘Ȟ16㧕ߎࠇࠄߪ C=C િ❗ࡕ࡯࠼ߣࠝ࡯ࡃ࡯࡜࠶ࡊߔࠆߎߣߥߊᵄᢙ߆ࠄኈᤃߦ඙೎ߔࠆߎߣ߇ߢ߈ࠆ㧚߹ߚ㧘
MeEDO-TTF0 ߆ࠄ MeEDO-TTF+߳ 1 㔚ሶ㉄ൻߐࠇࠆߣ㧘ၮḰᝄേ⸃ᨆߢ੍ᗐߐࠇߚࠃ߁ߦ C=C િ❗

32

9
10
10+
9+

100/90

16

18
17

22
21
20
19

}
10

ߢߪ㧘(MeEDO-TTF)2PF6 ߩࠬࡍࠢ࠻࡞ࠍ⷗ߡߺࠃ

}

(3)

17

(2)

Ȟ~10(ȡ)/cmí1 = 1503 + 118×(1íȡ)}Ȟ~9(ȡ)/cmí1 = 1548 + 100×(1íȡ)

24઒ቯߔࠆߣ㧘ᰴߩ㑐ଥᑼ߇ᓧࠄࠇࠆ㧚

Absorbance / arbitrary unitsଔᢙ㧔ȡ㧕ߣᵄᢙ㧔Ȟ~㧕ߩ㑆ߦ✢ᒻ㑐ଥ߇ᚑࠅ┙ߟߣ11ㅒォ߇⿠߈ࠆߎߣ߇ಽ߆ߞߚ㧚MeEDO-TTF ಽሶߩ} 12,13,14,15

23ࡕ࡯࠼ߪૐᵄᢙ஥߳ࠪࡈ࠻ߒ㧘Ȟ9㧘Ȟ10 ߩ⋧ኻᒝᐲߩ

MeEDO-TTF0 ߣMeEDO-TTF+ߩ㊀ߨวࠊߖߣߪߥߞ
ߡ޿ߥ޿߇㧘0 ଔߦㄭ޿ MeEDO-TTF ಽሶߣ+1 ଔߦ

1100

1200

9

}

22

23

᷹ⷰߒߡ޿ࠆߎߣߦߥࠆ㧚ࠬࡍࠢ࠻࡞ߪቢోߦ

16߁㧚ߎߎߢߪቶ᷷ߢ᷹ቯࠍߒߡ޿ࠆߩߢ㧘ૐ᷷⋧ࠍ

1300 1400 1500 1600
Wavenumber / cm 1

1700ㄭ޿ MeEDO-TTF ಽሶ߇౒ሽߒߡ޿ࠆߣ⸃㉼ߐࠇࠆ㧚 ࿑9 ቶ᷷ߢ᷹ቯߒߚ⿒ᄖࠬࡍࠢ࠻࡞㧔KBr ㍤೷ᴺ㧕㧚⇟ภߪ㧘ฦᝄേࡕ࡯࠼ߩ⇟ภࠍ␜ߔ㧚(MeEDO-TTF)2PF6 ߢߪ㧘+1 ଔߦㄭ޿ MeEDO-TTF
C=Cિ❗ࡕ࡯࠼ߪ᩶⦡ߩᏪߢ␜ߒߡ޿ࠆ㧚ಽሶߩ Ȟ9+㧘Ȟ10+ࡕ࡯࠼㧔એਅ㧘+1 ଔߦㄭ޿ಽሶߩᝄ
MeEDO-TTF㧔✛㧕㧘(MeEDO-TTF)2PF㧔㕍㧕㧘
6േࡕ࡯࠼ߪ਄ઃ߈ᢥሼߩ+ߢ␜ߔ㧕߇ 1558㧘
1523 cmí1(MeEDO-TTF)FeBr4㧔㤥㧕㧚ߦ᷹ⷰߐࠇߡ޿ࠆߩߢ㧘
ᑼ(2)㧘(3)ࠍㆡ↪ߔࠆߣ㧘Ȟ9+㧘
Ȟ10+ࡕ࡯࠼߆ࠄ㧘ߘࠇߙࠇ㧘+0.90㧘+0.83 ଔߣ᳞߹ࠆ㧚(MeEDO-TTF)2ClO4

í1

߹ߚ㧘1625 cm ߦ᷹ⷰߐࠇߡ޿ࠆࡃࡦ࠼ߪ㧘0 ଔߦㄭ޿ಽሶߩ Ȟ90㧘߹ߚߪ㧘Ȟ100 ࡕ࡯࠼㧔એਅ㧘0 ଔߦߢ޽ࠆߣ઒ቯߔࠆߣ㧘
ᑼ(2)㧘
(3)߆ࠄ㧘
ߘࠇߙࠇ㧘
+0.23㧘
í0.03 ଔߣ᳞߹ࠆ㧚ߒߚ߇ߞߡ㧘ቶ᷷㧔ૐ᷷⋧㧕ߩ X✢᭴ㅧ⸃ᨆߢߪ㧘ోߡߩಽሶ߇╬ଔ㧘ߔߥࠊߜ㧘หߓ㔚⩄ࠍ᦭ߔࠆߣ⸃㉼ߐࠇߚ߇㧘⿒ᄖࠬࡍࠢ࠻࡞ߢ
ߪ㧘+1 ଔߦㄭ޿ಽሶߣ 0 ଔߦㄭ޿ಽሶ߇౒ሽߒߡ޿

300 K

90/100

10+/110

Intensity / arbitrary unitsᏫዻߐࠇࠆ㧚ߎߩࡃࡦ࠼߇ Ȟ90㧘߹ߚߪ㧘Ȟ100 ࡕ࡯࠼

9+

310 K

ㄭ޿ಽሶߩᝄേࡕ࡯࠼ߪ਄ઃ߈ᢥሼߩ 0 ߢ␜ߔ㧕ߦ

290 K

200 K

100 K

ࠆߎߣ߇ಽ߆ߞߚ㧚ߎߩߎߣࠍ㧘╙ 2 ▵ߢ߽ㅀߴߚ
11ࠃ߁ߦ㔚⩄ߩਇဋൻߣ޿߁㧚

11

10

18

ࡍࠢ࠻࡞ࠍ␜ߔ㧚(MeEDO-TTF)FeBr4 ߣ MeEDO-TTF

10
9(MeEDO-TTF)FeBr4

࿑ 10 ߦ(MeEDO-TTF)2PF6 ߣ㑐ㅪ‛⾰ߩ࡜ࡑࡦࠬ

1200

Ȟ~9(ȡ)/cmí1 = 1553 + 96×(1íȡ)(4)

Ȟ~10(ȡ)/cmí1 = 1531 + 93×(1íȡ)(5)

Ȟ~11(ȡ)/cmí1 = 1415 + 118×(1íȡ)(6)ߣ޿߁㑐ଥᑼ߇ᓧࠄࠇࠆ㧚PF6 ㍲૕ߩ⋧ォ⒖᷷ᐲ⋥਄ߩ 310 K㧔㜞᷷⋧㧕ߦ߅

1300

9

MeEDO-TTFߩ࡜ࡑࡦࠬࡍࠢ࠻࡞߆ࠄ㧘

1400
1500
1600
Raman shift / cm 1

1700

࿑10(MeEDO-TTF)2PF6 ߩ᷷ᐲนᄌ࡜ࡑࡦࠬࡍࠢ࠻ ࡞ 㧚 (MeEDO-TTF)2ClO4 㧔 ⿒ 㧕㧘
(MeEDO-TTF)FeBr㧔⨥㧕㧘MeEDO-TTF㧔✛㧕
4ߩࠬࡍࠢ࠻࡞߽૬⸥ߒߡ޿ࠆ㧚ฦᝄേࡕ࡯
࠼ߩ⇟ภߩ਄ઃ߈ᢥሼߩ+㧘0 ߪ㧘ߘࠇߙࠇ㧘+1 ଔߦㄭ޿ಽሶ㧘
0 ଔߦㄭ޿ಽሶࠍ⴫ࠊߔ㧚33

ߌࠆࠬࡍࠢ࠻࡞ࠍ⷗ߡߺࠆߣ㧘㊄ዻ⊛᜼േࠍ␜ߔ ClO4 ㍲૕ߩࠬࡍࠢ࠻࡞ߦ㉃ૃߒߡ޿ࠆߎߣ߇ಽ߆ࠆ㧚
ߚߛߒ㧘PF6 ㍲૕߽ ClO4 ㍲૕߽ࠬࡍࠢ࠻࡞߇᏷ᐢߢ޽ࠆߎߣߣ㧘ᑼ(4)㧘(5)㧘(6)ࠍ᷹ⷰߐࠇߚࡃࡦ࠼ߦ
ㆡ↪ߒߡ߽㧘+0.5 ଔ߆ࠄߕࠇߡߒ߹߁ߎߣࠍ⠨߃޽ࠊߖࠆߣ㧘㔚⩄ߩਇဋൻ߇⿠߈ߡ޿ࠆ߽ߩߩ㧘㔚⩄ߪቢోߦߪዪ࿷ൻߒߡ߅ࠄߕំࠄ޿ߛ⁁ᘒߦ޽ࠆߎߣ␜ߒߡ޿ࠆ[21b]㧚
⋧ォ⒖᷷ᐲ⋥ਅߩ 300 K㧔ૐ᷷⋧㧕ߢߪ㧘310 K ߩࠬࡍࠢ࠻࡞ߣ᭽ᄌࠊࠅߒ㧘1400 cmí1 ઃㄭߩ㕖Ᏹߦ᏷ᐢߥࡃࡦ࠼ߣ 1500 cmí1 એ਄ߦ㍈޿ࡃࡦ࠼߇᷹ⷰߐࠇߚ㧚᷷ᐲૐਅߦ઻޿㧘㕖Ᏹߦ᏷ᐢߥࡃࡦ࠼
ߪ᣿⍎ߥૐᵄᢙ஥߳ߩࠪࡈ࠻ࠍ␜ߒ㧘ઁߩ㍈޿ࡃࡦ࠼ߦߟ޿ߡߪ㧘ᵄᢙࠪࡈ࠻ߪ߶ߣࠎߤߥ޿߇㧘వ㍈ൻ߇⷗ࠄࠇߚ㧚㕖Ᏹߦ᏷ᐢߥࡃࡦ࠼ߩ⹦⚦ߦߟ޿ߡߪ᣿ࠄ߆ߦߥߞߡ޿ߥ޿߇㧘㔚⩄⒎ᐨ⁁ᘒߦ߅޿ߡ㔚ሶ㧙ಽሶᝄേ⚿วߩᄢ߈ߥᝄേࡕ࡯࠼ߢߒ߫ߒ᷹߫ⷰߐࠇࠆ․ᓽ[21]ߦૃߡ޿ࠆߩߢ㧘ห᭽ߩ⿠Ḯߢ޽ࠆߣ⠨߃ߡ޿ࠆ㧚
100 K ߢߩฦࡃࡦ࠼ߩ᷹ⷰ୯ߦᑼ

⴫ 3㧚(MeEDO-TTF)2PF6 ߦ߅ߌࠆಽሶߩଔᢙ㧔100 K㧕D [17](4)㧘(5)㧘(6)ࠍㆡ↪ߒߚ⚿ᨐࠍ⴫ 3 ߦ
Ȟ9
Ȟ10
Ȟ11

߹ߣ߼ߚ㧚ቶ᷷ߦ߅ߌࠆ⿒ᄖࠬࡍࠢ࠻࡞ࠍ᷹ቯߒߚ⚿ᨐ㧘MeEDO-TTF
ಽሶߩଔᢙߪ㧘0 ߆ࠄ+1 ߩ㑆ߢ㧘߆

D

1531 cmí1
+1.23
+1.00
+0.22

1561 cmí1
+0.92
+0.68
í0.24

1625 cmí1
+0.25
í0.01
í0.78

ਇวℂߥᏫዻߪ⿒ሼߢ␜ߒߚ㧚ߟ㧘0 ଔ㧘+1 ଔߦㄭ޿ߣ⠨߃ࠄࠇࠆ㧚ߒߚ߇ߞߡ㧘⿒ᄖࠬࡍࠢ࠻࡞ߩ⚿ᨐࠍ⠨ᘦߔࠆߣ㧘ቢోߥᏫዻߦߪ⥋ࠄߥ޿߽ߩߩ 1531 cmí1 ߩࡃࡦ࠼ߪ㧘Ȟ10+㧘߹ߚߪ㧘Ȟ110 ࡕ࡯࠼㧘1561 cmí1 ߩࡃࡦ࠼ߪ㧘Ȟ9+ࡕ࡯࠼㧘1625 cmí1 ߩࡃࡦ࠼ߪ㧘Ȟ90㧘߹ߚߪ㧘Ȟ100 ࡕ࡯࠼ߣᏫዻߐࠇࠆ㧚+1 ଔߦㄭ޿ಽሶߣ 0 ଔߦㄭ޿ಽሶߩᝄേࡕ࡯࠼߇หᤨߦ᷹ⷰߐࠇߡ޿
ࠆߩߢ㧘᣿⏕ߥ㔚⩄ߩਇဋൻ߇⿠ߎߞߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚એ਄߆ࠄ㧘PF6 Ⴎߩ㜞᷷⋧ߢߪ㔚⩄ߩਇဋൻ߇޽ࠆ߽ߩߩ㧘㔚⩄ߪቢోߦߪዪ࿷ൻߒߡ߅ࠄߕំࠄ
޿ߛ⁁ᘒߦ޽ࠅ㧘ૐ᷷⋧ߢߪ㧘㔚⩄߇ዪ࿷ൻߒߚ⁁ᘒߦ޽ࠆߎߣ߇ಽ߆ߞߚ㧚ߔߥࠊߜ㧘㔚⩄ំࠄ߉
ߩ⒟ᐲ߇㧘᭴ㅧ⋧ォ⒖ߦ઻ߞߡᄌൻߒߡ޿ࠆߣ޿߁ߎߣ߇᣿ࠄ߆ߦߥߞߚ㧚߹ߚ㧘㔚⩄ߩਇဋൻ߇⿠
ߎࠆⷐ࿃ߣߒߡߪ㧘ߎߩ♽ߩ⒖േⓍಽ߇ዊߐߊ㧘⒖േⓍಽߣ㔚ሶ㑆ࠢ࡯ࡠࡦᢺജ߇ᜟ᛫ߒߚ⁁ᘒߦ޽ࠆߎߣ߇ផኤߐࠇࠆ㧚߅ࠊࠅߦ
ᧄⓂߢߪ㧘⿒ᄖๆ෼ಽశᴺ߿࡜ࡑࡦಽశᴺߣ޿ߞߚᝄേಽశᴺ߇㧘ಽሶౝߦ޽ࠆේሶ㑆ߩജߩቯᢙ
ߩ㆑޿㧔ൻቇ⚿วߩᒝߐ㧕ࠍᢅᗵߦᬌ಴ߢ߈ࠆߎߣࠍ⺑᣿ߒߚ㧚ߐࠄߦ㧘ߎࠇࠍ೑↪ߔࠆߎߣߦࠃࠅ
᦭ᯏዉ㔚૕ߦ߅޿ߡ㔚⩄ਇဋൻߣ޿߁⃻⽎ࠍᏒ⽼ߩⵝ⟎ߢ◲ଢߦᬌ಴ߢ߈ࠆߎߣࠍ␜ߒߚ㧚(MeEDO-TTF)2PF6 ߩ଀ߩࠃ߁ߦㅢᏱߩ X ✢᭴ㅧ⸃ᨆߢߪ㧘㔚⩄ߩਇဋൻࠍᬌ಴ߢ߈ߥ޿ߎߣ߽޽ࠆ㧚ߎࠇߪ㧘X ✢᭴ㅧ⸃ᨆߩ᷹ቯߩ࠲ࠗࡓࠬࠤ࡯࡞߇ᝄേಽశᴺߩߘࠇࠃࠅ߽㐳޿ߎߣ߿㧘ᾲំࠄ߉㧘࠺ࠖࠬࠝ࡯࠳࡯ߦࠃࠅ㔚⩄߇ਇဋൻߒߚ⁁ᘒ߇㓝ߐࠇߡߒ߹߁߆ࠄߢ޽ࠆ㧚੹࿁ߪ⚕㕙ߩㇺว਄⚫੺ߢ߈ߥ߆ߞߚ߇㧘㔚⩄ਇဋൻࠍታ㛎⊛ߦᬌ಴ߔࠆᣇᴺߣߒߡ X ✢᭴ㅧ⸃ᨆ߿ᝄേಽశᴺએᄖߦ㧘‛ℂߩ
ಽ㊁ߢߪ NMR [22]߽ࠃߊ↪޿ࠄࠇߡ޿ࠆ㧚߹ߚ㧘‛⾰ࠍวᚑߔࠆߣ޿߁ൻቇ⠪ߩ┙႐߆ࠄ⷗ࠆߣ㧘㒶ࠗࠝࡦࠍ⟎឵ߔࠆߎߣߦࠃࠅᓸᅱߦ⒖േⓍಽߩᄢ߈ߐࠍ೙ᓮߒ㧘(MeEDO-TTF)2X㧔X = BF4㧘ClO4㧘
PF6㧕߇㊄ዻߣඨዉ૕ߩႺ⇇ઃㄭߦ૏⟎ߔࠆ‛⾰ߢ޽ࠆߎߣࠍ␜ߒߚ㧚⋧ォ⒖‛⾰ࠍ㐿ᜏߔࠆߣ޿߁ⷰ
ὐ߆ࠄߪ㧘ߎߩࠃ߁ߦ‛ᕈࡄ࡜ࡔ࡯࠲࡯ࠍ೙ᓮߒ㧘૗ࠄ߆ߩ‛ᕈࡄ࡜ࡔ࡯࠲࡯߇ᜟ᛫ߒߚႺ⇇ࠡ࡝ࠡ࡝ߩ‛⾰ࠍวᚑߔࠆߣ޿߁ߩ߇ 1 ߟߩᜰ㊎ߦߥࠆߣ⠨߃ࠄࠇࠆ㧚ᦨᓟߦ㧘ᧄⓂࠍ߈ߞ߆ߌߣߒߡᝄേ
ಽశᴺࠍ⊝᭽ߩ⎇ⓥߦߏᵴ↪޿ߚߛߌࠇ߫ᐘ޿ߢ޽ࠆ㧚

34

⻢ㄉ
ᧄ⎇ⓥࠍㅴ߼ࠆߦ޽ߚࠅ౒ห⎇ⓥ⠪ߩ㇕ะ㌵ඳ჻㧘⍫ᜬ⑲⿠ᢎ᝼㧘߅ࠃ߮㧘ℂቇ⎇ⓥ⑼ൻቇኾ᡹᦭
ᯏ‛ᕈൻቇ⎇ⓥቶߩ⊝᭽ߦߪ᦭⋉ߥ⼏⺰ࠍߒߡ޿ߚߛ޿ߚ㧚߹ߚ㧘࡜ࡑࡦࠬࡍࠢ࠻࡞ߩ᷹ቯߢߪ㧘ಽ
ሶ⑼ቇ⎇ⓥᚲߩᄁᏒᐙᄢඳ჻㧘⮯Ꮷਭᒫᢎ᝼ߩ߅਎⹤ߦߥߞߚ㧚ߎߩ႐ࠍ߅୫ࠅߒߡᗵ⻢ߒߚ޿㧚ᧄ⎇ⓥߪ㧘․ቯ㗔ၞ⎇ⓥ㧔No. 1573215㧕㧘21 ਎♿ COE ࡊࡠࠣ࡜ࡓ㧔No.15205019㧕㧘ቇⴚഃᚑ⎇ⓥ㧔No.
18GS0208㧕㧘ERATO㧔⣶ේ㕖ᐔⴧ࠳ࠗ࠽ࡒࠢࠬ㧕ߩഥᚑࠍฃߌߡⴕࠊࠇߚ㧚ෳ⠨ᢥ₂
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G. C. Bassler㧘T. C. Morrill ⪺㧘⨹ᧁፋ㧘⋉ሶᵗ৻㇢㧘ጊᧄୃ ⸶㧘᦭ᯏൻว‛ߩࠬࡍࠢ࠻࡞ߦࠃ
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[22] T. Takahashi, Y. Nogami, K. Yakushi, J. Phys. Soc. Jpn., , 051008 (2006).

⪺⠪⇛ᱧਛ㊁ ⟵᣿㧔Yoshiaki NAKANO㧕੩ㇺᄢቇૐ᷷‛⾰⑼ቇૐ᷷࠮ࡦ࠲࡯ ഥᢎ
1977 ᐕᄢ㒋↢߹ࠇ㧚2000 ᐕ 3 ᦬㧘੩ㇺᄢቇᎿቇㇱතᬺ㧚2002 ᐕ 3 ᦬㧘੩ㇺᄢቇᄢቇ㒮Ꮏቇ⎇ⓥ⑼ୃ჻⺖⒟ୃੌ㧚2005 ᐕ 3 ᦬㧘੩ㇺᄢቇᄢቇ㒮Ꮏቇ
⎇ⓥ⑼ඳ჻ᓟᦼ⺖⒟ୃੌ㧘ඳ჻㧔Ꮏቇ㧕
㧚2005 ᐕ 4 ᦬㧘੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ᢎോ⵬૒ຬ㧘หᐕ 7 ᦬㧘ห⎇ⓥ࠮ࡦ࠲࡯⻠Ꮷ㧔⎇ⓥᯏ㑐⎇ⓥຬ㧕㧘หᐕ 10 ᦬㧘ห⎇ⓥ࠮ࡦ࠲࡯⎇ⓥຬ㧔ቇⴚᡰេ㧕㧘หᐕ 12 ᦬㧘ห⎇ⓥ࠮ࡦ࠲࡯⻠Ꮷ㧔⎇ⓥᯏ㑐⎇ⓥຬ㧕
㧚2008 ᐕ 4 ᦬㧘ห⎇ⓥ࠮ࡦ࠲࡯⎇ⓥ
ຬ㧔⎇ⓥᯏ㑐㧕
㧘หᐕ 7 ᦬㧘੩ㇺᄢቇ‛⾰㧙⚦⢩⛔วࠪࠬ࠹ࡓ᜚ὐ⎇ⓥຬ㧔⑼ቇ⎇ⓥ㧕
㧚2009 ᐕ 4 ᦬ࠃࠅห⎇ⓥ࠮ࡦ࠲࡯ഥᢎ㧔⃻⡯㧕
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╙ 8 ࿁ ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯⻠Ṷળ࡮⎇ⓥ੤ᵹળ㐿௅ႎ๔
Report on LTM Center Workshop 8⍫ᜬ ⑲⿠੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯
H. Yamochi
Research Center for Low Temperature and Materials Sciences, Kyoto University
The 8-th annual meeting to share the knowledge within and around the community based on
Research Center for Low Temperature and Materials Sciences (LTM) was held in May 15, 2010.
Professor Hiroaki, Dr. Mitsuoka, and Professor Fujiyoshi provided lectures focused on the
structural analysis and the functionalities of biomolecules. These invited talks were followed by
66 poster presentations given by the researchers associated to LTM.
 2010 ᐕ 3 ᦬ 15 ᣣߦ㧘ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯(LTM)ਥ௅ߩ㧘⻠Ṷળ࡮⎇ⓥ੤ᵹળ߇㐿௅ߐࠇߚ㧚ᧄળߪ╙ 8 ࿁ࠍㄫ߃㧘࠮ࡦ࠲࡯㑐ଥ⠪ߦߣߞߡᕡ଀ߩᐕਛⴕ੐ߣߒߡቯ⌕ߒߡ߈ߚᗵ߇޽ࠆ㧚੹࿁ߪ‫ޡ‬᭴ㅧ↢‛ቇߩ⃻⁁ߣᧂ᧪‫⻠ࠍޢ‬Ṷ࠹࡯ࡑߣߒߡ㧘ᓟㅀߩ 3 ฬߩవ↢ᣇߦᓮ⻠Ṷࠍ޿ߚߛ޿ߚ㧚 ⻠Ṷળ㐿ᆎߦవ┙ߜ㧘࠮ࡦ࠲࡯㐳 ೨Ꮉ ⷡ ᢎ᝼ߩ᜿ᜦ߇޽ߞߚ㧚ᦨㄭ㧘․ߦߎߎ 1 ᐕߩ࠮ࡦ࠲࡯ߩേ߈ߦߟ޿ߡߩႎ๔߇ߐࠇߚ㧚ߘߩਛߢ㧘ศ↰࿾඙ߢኙ೷㈩ㅍࠪࠬ࠹ࡓ߇㐿ᆎߐࠇߚ੐߇⚫੺ߐࠇߚ㧚ኙ೷೑↪ߦߟ޿ߡߩ೑ଢᕈߩะ਄ߣߣ߽ߦ㧘೑↪⠪㑆⋧੕ߩㅪ៤࡮ㅪᏪ߇
Ꮧ⭯ൻߔࠆ੐߳ߩ ᔨ߇ㅀߴࠄࠇ㧘ߘߩ᭽ߥᤨઍߦ߅ߌࠆᧄ⻠Ṷળ࡮
⎇ⓥ੤ᵹળߩ㊀ⷐᕈࠍ⸷߃ࠄࠇߚ㧚 ⻠Ṷળߢߪ㧘వߕ㧘␹ᚭᄢቇᄢቇ㒮කቇ⎇ⓥ⑼ ᑝ᣿ ⑲৻ వ↢߆ࠄ‫ࡦࠗࡔ࠼ޟ‬᭴ㅧ߆ࠄℂ⸃ߔࠆ
AAA-ATPase ߩᯏ⢻ಽᜂ‫ߣޠ‬㗴ߔࠆᓮ⻠Ṷࠍ޿ߚߛ޿ߚ㧚NMR ߦࠃࠆ࠲ࡦࡄࠢ⾰ಽሶߩ᭴ㅧ⸃ᨆᴺࠍ㧘ߘߩ೑ὐߣ㒢⇇ࠍ࿁᛬ߦࠃࠆ᭴ㅧ⸃ᨆᴺߣᲧセߒߟߟ⸃⺑ߐࠇߚ㧚NMR ᴺߪ㧘⸃ᨆน⢻ߥ࠲ࡦࡄࠢ
⾰ߦ 250 ࠕࡒࡁ㉄⒟ᐲߩ਄㒢߇޽ࠅ㧘߹ߚ㧘NMR ᵴᕈᩭ⒳ࠍᛒ߁ᔅⷐ߇޽ࠆ߽ߩߩ㧘⹜ᢱߩ⚿᥏ൻ߇ਇⷐߢ㧘ಽሶߩំࠄ߉ࠍ฽߻േ⊛ߥ᭴ㅧࠍ⸃ᨆߔࠆᄢ߈ߥ೑ὐ߇޽ࠆߎߣࠍ⺑᣿ߐࠇߚ㧚⛯޿ߡߘߩࡔ࡝࠶࠻ࠍ↢߆ߒ㧘࠲ࡦࡄࠢ⾰ಽሶࠍ᭴ᚑߔࠆ᭴ㅧන૏ߢ޽ࠆ࠼
ࡔࠗࡦߩ᭴ㅧ⸃ᨆߦ㑐ߔࠆᚑᨐࠍ⚫੺ߐࠇߚ㧚ߘߩࠕࡊࡠ࡯࠴ߪ㧘
NMR ᭴ㅧᖱႎ㧘ㆮવᖱႎߩᵴ↪ត⚝㧘⚦⢩୘‫ࠢࡄࡦ࠲ࠆߌ߅ߦޘ‬⾰ߩ⊒⃻ᬌ⸽ߥߤࠍ✚ว⊛ߦ⚵ߺวࠊߖߚ߽ߩߢ޽ߞߚ㧚․ߦ㧘ᑝ᣿వ↢߇ᓮኾ㐷ߣߐࠇࠆ AAA-ATPase ߩ᭴ㅧ⸃᣿ߦၮߠ߈㧘ߎࠇࠄߩ㉂⚛ߣᓸዊ▤߿↢૕⤑ߣߩ⋧੕૞↪߿᭴ㅧᄌൻ⺃ዉߩᯏ᭴ࠍ⸃᣿
ߔࠆ⥝๧ᷓ޿ขࠅ⚵ߺࠍߏ⚫੺ߐࠇߚ㧚38 ⛯޿ߡ↥ᬺᛛⴚ✚ว⎇ⓥᚲ శጟ ⮍ వ↢߆ࠄ‫ޟ‬ᭂૐ᷷㔚ሶ㗼ᓸ㏜ߦࠃࠆ↢૕㜞ಽሶ᭴ㅧ⸃ᨆߩᄙ᭽ߥ⹜ᢱ߳ߩᔕ↪‫ߣޠ‬㗴ߔࠆᓮ⻠Ṷࠍ޿ߚߛ޿ߚ㧚⚿᥏ᕈ࠲ࡦࡄࠢ⾰ಽሶߩ᭴ㅧ⸃
ᨆߦ߅ߌࠆ㔚ሶ✢࿁᛬ᴺߩ᦭↪ᕈࠍᓮ⺑᣿ߦߥࠅ㧘หᤨߦ㧘ૐ᷷㔚ሶ㗼ᓸ㏜ߩㅴൻࠍ᭎⺑ߐࠇߚ㧚ߎߩ㔚ሶ✢࿁᛬ᴺࠍ↪
޿ߡ⸃ᨆߐࠇߚ㧘ࠣ࡞࠲࠴ࠝࡦࠍ․⇣⊛ߦ೑↪ߔࠆ 2 ⒳㘃ߩ㉂⚛ ࡒࠢࡠ࠰࡯ࡓဳࠣ࡞࠲࠴ࠝࡦォ⒖㉂⚛ߣࡒࠢࡠ࠰࡯ࡓ
ဳࡊࡠࠬ࠲ࠣ࡜ࡦࠫࡦ E วᚑ㉂⚛ ߩ᭴ㅧߣᯏ⢻ߦߟ޿ߡ⚫
੺ߐࠇߚ㧚ᦝߦ㧘࠲ࡦࡄࠢ⾰ߩ㓸ว᭴ㅧࠍ࿁᛬ᖱႎߢߪߥߊታ௝߆ࠄ⸃᣿ߔࠆන☸ሶ⸃ᨆߣ๭߫ࠇࠆ
ᚻᴺߦߟ޿ߡ⺑᣿ߐࠇߚ㧚
ߎߩᣇᴺߪࠕࡕ࡞ࡈࠔ᳖ࠬਛߢ⒳‫ߩޘ‬ᣇะࠍะ޿ߚห⒳ߩ☸ሶ ࠲ࡦࡄࠢ⾰ಽሶ߿ߘߩⶄว૕ ߩ㔚ሶ㗼ᓸ㏜௝ࠍ✚วߒߡߘߩ 3 ᰴర᭴ㅧࠍ᳿ቯߔࠆᣇᴺߢ޽ࠅ㧘ౕ૕⊛ߥㆡ↪଀ߣߒߡࠪࡖࡍࡠࡦߩ⸃ᨆ╬ࠍ⚫੺ߐࠇߚ㧚 ⻠Ṷળߩ✦߼ߊߊࠅߦ㧘ᧄቇᄢቇ㒮ℂቇ⎇ⓥ⑼ ⮮ศ ᅢೣవ↢߇‫ߩ⾰ࠢࡄࡦ࠲⤑ޟ‬᭴ㅧߣᯏ⢻⎇ⓥߩߚ߼ߩᭂૐ᷷㔚ሶ㗼ᓸ㏜ᛛⴚ‫ߣޠ‬㗴ߒߡᭂૐ᷷㔚ሶ㗼ᓸ㏜ߩ㐿⊒ߣᦨᣂߩⵝ⟎ࠍ↪޿ߚᚑᨐࠍ⚫੺ߐࠇߚ㧚㔚ሶ✢࿁᛬ࠍ↪޿ߚ⚿᥏ᕈ⹜ᢱߩ᭴ㅧ⸃ᨆߦ߅޿ߡ㧘㔚ሶ✢ߦࠃࠆ⹜ᢱ៊்ߪ㊀ⷐߥ໧㗴ߢ޽ࠆ߇㧘⹜ᢱࠍ಄ළߔࠆ੐ߦࠃࠅߎࠇࠍᛥ೙ߢ߈ࠆ㧚ฎߊߪᶧ૕⓸⚛᷷ᐲઃㄭߩ᷷ᐲߢᦨ߽៊்߇ዋߥߊᦝߦૐ᷷ߢߪ߻
ߒࠈ៊்߇Ⴧ߃ࠆߣ⸒ࠊࠇߚ੐߽޽ߞߚ߇㧘ᘕ㊀ߥታ㛎ࠍⴕ޿᷷ᐲࠍਅߍࠆ⒟㧘៊்ߪシᷫߐࠇࠆߎߣ߇್᣿ߒߚ㧚⹜ᢱ᷷ᐲࠍ 20 K એਅߦ଻ߟ㧘߹ߚ㧘⍍㑆಄ಓߦࠃࠆ⹜ᢱ⺞⵾╬ߩᛛⴚ㐿⊒ߦߟ޿ߡᓮ⺑᣿޿ߚߛ޿ߚ㧚ߎࠇࠄᭂૐ᷷㗼ᓸ㏜ࠍ↪޿ߚ⎇ⓥ଀߇ᄙᢙ⚫੺ߐࠇߚ㧚ਛߢ߽㧘⚦⢩⤑ਛߦሽ࿷ߔࠆ᳓ಽሶࠍㆬᛯ⊛߆ߟᕆㅦߦㅘㆊߐߖࠆ⤑࠲ࡦࡄࠢ⾰ߢ޽ࠆࠕࠢࠕࡐ࡝ࡦߩ᭴ㅧߣߘࠇ߇᳓ಽሶࠍㅢㆊߐߖࠆᤨߩ᭴ㅧᄌൻ߿㧘᳓ಽሶࠍㅘㆊߐߖߥ߇ࠄࡊࡠ࠻ࡦ
ߪㅘㆊߐߖߥ޿ᯏ᭴߿⤑ߩಽሶ᭴ᚑߩ㑐ਈߦߟ޿ߡߪ㧘ᓮ⻠Ṷᓟߩ⾰⇼ᔕ╵߇ᵴ⊒ߦߥߐࠇߚ㧚⻠Ṷળߦᒁ߈⛯߈㧘ࡐࠬ࠲࡯⊒⴫ᒻᑼߢෳട⠪߇⋧੕ߦ⥄ࠄߩ⎇ⓥࠍ⚫੺ߒ޽߁⎇ⓥ੤ᵹળ߇ⴕࠊ
ࠇߚ㧚੹࿁ߪ 66 ઙߩࡐࠬ࠲࡯⊒⴫߇޽ࠅᷙߺวߞߚ⁁ᘒߢߩ੤ᵹળߣߥߞߡߒ߹ߞߚ߇㧘⊝᭽ߩᓮදജߦࠃࠅ๺߿߆ߥ㔓࿐᳇ߩਛ㧘ળߪㅴ߼ࠄࠇߚ㧚߹ߚ㧘੤ᵹળߩᓟඨߪᙣⷫળࠍ౗ߨ㧘シ㘩ߣシ޿ࠕ࡞ࠦ࡯࡞㘶ᢱ߽౉ࠅ㧘ᦝߦ๺߿߆ߥ੤ᵹ߇ⴕࠊࠇߚ㧚 ਥ௅⠪ߩḰ஻ߦਇలಽߥὐ߽޽ࠅ߹ߒߚ߇㧘⚂90 ฬ߽ߩ⊝᭽ߦᓮෳട޿ߚߛ޿ߚ੐ߦᗵ⻢ߒߡ
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ᑝ᣿⑲৻ CC␹ᚭᄢቇකቇ⎇ⓥ⑼ක⑼ቇኾ᡹᭴ㅧ↢‛ቇಽ㊁

'OCKN䋺JKTQCMKJ"OGFMQDGWCELR㩷 AAA ߣߪ㧘ATPase-Associated various cellular Activities ߩ㗡ᢥሼߢ޽ࠅ㧘ዊ⢩ャㅍ࡮⤑Ⲣว࡮ࠪࡖࡍࡠࡦߣ޿ߞߚ㧘᭽‫⚦ߥޘ‬⢩ᯏ⢻ࠍᜂ߁࠲ࡦࡄࠢ⾰ߦᐢߊಽᏓߒߡ޿ࠆ⚂ 230 ࠕࡒࡁ㉄ߩ ATPase ࠼ࡔࠗࡦߩ⇛⒓ߢ޽ࠆ㧚ᚒ‫ ߪޘ‬AAA ࠼ࡔࠗࡦ࠲ࡦࡄࠢ⾰ߩ㧘AAA ࠼ࡔࠗࡦߩ N ᧃ┵ߦ㓞ធߒߡ޿ࠆ㗔ၞߦ⌕⋡ߒߡ᭴ㅧࡊࡠ࠹ࠝࡒࠢࠬ⊛ߥ⎇ⓥࠍㅴ߼ߡ޿ࠆ㧚AAA ࠼ࡔࠗࡦࠍಽሶߩേജㇱߣߔࠆߥࠄ߫㧘ߘߩ N ᧃ┵ߪಽሶᯏ⢻ߦ․ൻߒߚࠕ࠲࠶࠴ࡔࡦ࠻ߦ⋧ᒰߒ㧘ߘߩ࠲ࡦࡄࠢ⾰ߩᯏ⢻ࠍ․ᓽ
ઃߌࠆ࿕᦭ߩ࠼ࡔࠗࡦ߇૏⟎ߒߡ޿ࠆ㧚੹࿁㧘ᚒ‫ߪޘ‬ᓸዊ▤ࠍಾᢿߔࠆ㉂⚛㧘katanin
p60 ߩ N ᧃ┵࠼ࡔࠗࡦߩ┙૕᭴ㅧࠍ⸃᣿ߒ㧘ᓸዊ▤⹺⼂ㇱ૏ࠍ᣿ࠄ߆ߦߒߚ(1)㧚ߘߩ┙૕᭴ㅧߪ㧘katanin p60 ߣหߓ I ဳ AAA-ATPase ߢ㧘⚦⢩⤑ߩ࠙ࠗ࡞ࠬ಴⧘ㇱ૏ࠍᒻᚑߔ
ࠆ❫⛽⁁࠲ࡦࡄࠢ⾰ⶄว૕ ESCRT-III ࠍಾᢿߔࠆ Vps4 ߣ㧘㈩೉⋧หᕈ߇ૐ޿ߦ߽߆߆
ࠊࠄߕࠃߊૃߡ޿ߚ㧚߹ߚ㧘ၮ⾰ߢ޽ࠆᓸዊ▤ߣߩࠗࡦ࠲ࡈࠚ࡯ࠬߩ૏⟎㑐ଥ߽଻ሽߐࠇ
ߡ޿ߚ㧚ߘߩᖱႎࠍ߽ߣߦᓸዊ▤ߦ૞↪ߔࠆ katanin p60 ߩో㐳ࠍࡕ࠺࡝ࡦࠣߒߚߩ߇ਅ
ߩ࿑ߢ޽ࠆ㧚ߎߩࠃ߁ߥ㑐ଥߪ㧘એ೨ߦᚒ‫߇ޘ‬᣿ࠄ߆ߦߒߚࡍ࡞ࠝࠠࠪ࠰࡯ࡓᒻᚑ࿃ሶߢ
޽ࠆ PEX1 ATPase ߩ N ᧃ┵࠼ࡔࠗࡦߣ㧘߿ߪࠅ㈩೉⋧หᕈ߇ૐ޿ߦ߽߆߆ࠊࠄߕหߓ II
ဳ AAA-ATPase ߢ޽ࠆ VCP/p97 ߩ᭴ㅧߩ㑆ߦ߽⷗಴ߐࠇߡ޿ࠆ(2)㧚᭴ㅧߩ㘃ૃࠍᯏ⢻ࡔࠞ࠾࠭ࡓߩ⋧ૃᕈߦ᜛ᒛߔࠆ
ᚒ‫ߩޘ‬ᚻᴺߪ㧘AAA-ATPase ߩ߁ߜ⸃ᨆ߇ㅴࠎߢ޿ߥ޿࠲ࡦࡄ
ࠢ⾰ߩಽሶᯏ᭴ߩℂ⸃ߦᓎ┙ߟ㧚(1) Iwaya et al., J Biol Chem, inrevision process.
(2) Shiozawa et al., J Biol Chem,
279, 50060-50068 (2004).

40ᭂૐ᷷㔚ሶ㗼ᓸ㏜ߦࠃࠆ↢૕㜞ಽሶ᭴ㅧ⸃ᨆߩᄙ᭽ߥ⹜ᢱ߳ߩ
ᔕ↪శጟ⮍ CC↥ᬺᛛⴚ✚ว⎇ⓥᚲ䊋䉟䉥䊜䊂䉞䉲䊅䊦ᖱႎ⎇ⓥ䉶䊮䉺䊷'OCKN䋺MCQTWO"PKCKUVIQLR
㩷 /#2')䋨OGODTCPGCUUQEKCVGFRTQVGKPUKPGKEQUCPQKFCPFINWVCVJKQPGOGVCDQNKUO䋩䉴
䊷䊌䊷䊐䉜䊚䊥䊷䈲⸃Ქ䉇䉝䊤䉨䊄䊮㉄䉕↪䈇䈢↢วᚑ⚻〝䈭䈬䈮㑐ਈ䈜䉎㉂⚛䉕฽䉃䉴䊷䊌䊷䊐 䉜 䊚 䊥 䊷 䈪 䈅 䉎 䇯 ੹ ࿁ ᚒ 䇱 䈲 䇮 䈠 䈱 䉴 䊷 䊌 䊷 䊐 䉜 䊚 䊥 䊷 䈱 ৻ ຬ 䈪 䈅 䉎 /2)'5 䋨 OKETQUQOCNRTQUVCINCPFKP'U[PVJCUG䋩䈮䈧䈇䈩䇮 ಽ⸃⢻䈱㔚ሶ✢⚿᥏᭴ㅧ⸃ᨆ䉕ⴕ䈦䈢䇯/2)'5
䈲䇮Ἳ∝䈮㑐ㅪ䈚䈩䊒䊨䉴䉺䉫䊤䊮䉳䊮 * 䈎䉌䊒䊨䉴䉺䉫䊤䊮䉳䊮 ' 䈱วᚑ䉕ⴕ䈉䇯೎䈮  ⚵䈱䉫䊦䊷䊒䈎䉌䇮: ✢⚿᥏᭴ㅧ⸃ᨆ䈮䉋䉍ේሶ䊝䊂䊦䈏ႎ๔䈘䉏䈢䇮ห䈛䈒 /#2') 䊐䉜䊚䊥䊷䈮ዻ䈜䉎䊨䉟䉮䊃䊥䉣䊮 % วᚑ㉂⚛䋨.6%5䋩䈫䈱Ყセ䈎䉌䇮/2)'5 䈪䈲ၮ⾰䈪䈅䉎䊒䊨䉴䉺䉫䊤䊮䉳䊮䈱⚿ว૏⟎䈏㐽䈛䈩䈍䉍䇮䈖䉏䈏․⇣⊛䈭ၮ⾰⹺⼂ᯏ᭴䈫㑐ଥ䈚䈩䈇䉎䈖䈫䈏␜ໂ䈜䉎⚿ᨐ䈏ᓧ䉌䉏䈢䇯㩷 ᚒ䇱䈲䇮⃻࿷䇮ᭂૐ᷷㔚ሶ㗼ᓸ㏜䉕න☸ሶ⸃ᨆ䈮ᔕ↪䈜䉎⎇ⓥ䉅ㅴ䉄䈩䈇䉎䇯න☸ሶ⸃ᨆ䈫䈲䇮⭯⤑⁁䈱䉝䊝䊦䊐䉜䉴䈭᳖䈱ਛ䈪䇮ಽሶ䈏䈇䉐䈇䉐䈭ᣇะ䉕ะ䈇䈩䈇䉎㔚ሶ㗼ᓸ㏜௝䉕᠟ᓇ䈚䈩䇮䈠䈖䈎䉌ะ䈐䉕᳿䉄䈩ਃᰴర᭴ㅧ䉕⸘▚䈜䉎ᣇᴺ䈪䈅䉎䇯䈖䈱ᣇᴺ䉕↪䈇䉏䈳䇮⚿᥏ൻ᧦ઙ䈭䈬䈫㑐ଥ䈭䈒䇮છᗧ䈱᳓ṁᶧ᧦ઙ䈪䈱ⶄว૕䈱᭴ㅧ䈏ᓧ䉌䉏䉎䈱䈮ട䈋䇮䊚䊥⑽⒟ᐲ䈪⹜ᢱ䉕ಓ⚿䈪䈐䉎䈱䈪䇮ኼ๮䈱⍴䈇ਛ㑆૕䈱᭴ㅧ⸃ᨆ䈭䈬䈮䉅೑↪䈪䈐䉎䈫ᦼᓙ䈘䉏䈩䈇䉎䇯䈠䈱න☸ሶ⸃ᨆ
ᴺ䉕↪䈇䈩䇮䉲䊞䊕䊨䊆䊮 )TQ'.)TQ'5 ၮ⾰ⶄว૕䈮䈧䈇䈩䇮䈠䈱┙૕᭴ㅧ䉕᣿䉌䈎䈮䈚䈢䇯ᅢᾲ⩶ 6JGTOWUVJGTOQRJKNWU䈎䉌ᓧ䉌䉏䈢䉲䊞䊕䊨䊆䊮 )TQ'. 䈲䇮䈠䈱⵬ഥ࿃ሶ䈪䈅䉎 )TQ'5
䈫቟ቯ䈭ⶄว૕䉕ᒻᚑ䈚䈩䈍䉍䇮䈠䈱⚿ᨐ䇮䊐䉤䊷䊦䊂䊮䉫ㅜਛ䈭䈬䈱ၮ⾰䉺䊮䊌䉪⾰䉅ⶄว૕䈮⚿ว䈚䈩䈇䉎䇯䈠䈱 )TQ'.
)TQ'5 ၮ⾰ⶄว૕䈮䈧䈇䈩䇮)TQ'. 䈫 )TQ'5 䈏૞䉎ⓨᵢ䈱ਛ䈮䇮ၮ⾰䉺䊮䊌䉪⾰䈮ኻᔕ䈜䉎㔚૏䉕᣿⍎䈮ⷰኤ䈜䉎䈖䈫䈏䈪䈐䈢䇯 㔚ሶ✢⚿᥏᭴ㅧ⸃ᨆ䈮䈲䇮⤑䉺䊮䊌䉪⾰䈏⢽⾰ੑ㊀ጀਛ䈮ⷙೣᱜ䈚䈒㈩೉䈚䈢ੑᰴర⚿᥏䉕↪䈇䉎䇯ੑᰴర⚿᥏䈲䇮⇇㕙ᵴᕈ೷䈮䉋䉍นṁൻ䈘䉏䈢䉺䊮䊌䉪⾰䈫⢽⾰䈱ṁᶧ䈎䉌䇮ㅘᨆ䈮䉋䉍⇇㕙ᵴᕈ೷䉕㒰෰䈜䉎䈖䈫䈪૞⵾䈜䉎䈱䈏৻⥸⊛䈪䈅䉎䈏䇮ੑᰴర⚿᥏䈪䈭䈒䉼䊠䊷䊑⁁⚿᥏䈏ᚑ㐳䈜䉎႐ว䈏䈅䉎䇯䈖䈱䉋䈉䈭䉼䊠䊷䊑⁁⚿᥏䉕૞⵾䈚䈢䉺䊮䊌䉪⾰䈫䈚䈩 $CPF 䈏䈅䉎䇯䈖䉏䈲䇮ಽሶ㊂⚂  ਁ䈪⿒ⴊ⃿⤑䈮ሽ࿷䈚䇮㒶䉟䉥䊮䈱ㅘㆊ䉕ᇦ੺䈜䉎ャㅍ૕䈫䈚䈩⍮䉌䉏䈩䈇䉎䇯․䈮⿒ⴊ⃿䈪䈲䇮Ⴎ⚛䉟䉥䊮䈫὇㉄䉟䉥䊮䈱੤឵෻ᔕ䉕ⴕ䈇䇮὇㉄䉧䉴䈱ャㅍ䊶ឃ಴䈮㊀ⷐ䈭ᓎഀ䉕䈚䈩䈇䉎䈫⠨䈋䉌䉏䈩䈇䉎䇯䈠䈱⚿᥏䈮 KVGTCVKXGJGNKECNTGCNURCEGTGEQPUVTWEVKQP ᴺ䋨+*454䋩䈫䈇䈉න☸ሶ⸃ᨆ䉕೑↪䈚䈢ᣇᴺ䉕ᔕ↪䈜䉎䈖䈫䈪䇮䈠䈱┙૕᭴ㅧ䉕ᓧ䈢䇯䈠䈖䈪䈲䇮➅䉍㄰䈚න૏ౝ䈮ੑ㊂૕䉕ⷰኤ䈜䉎䈖䈫䈏䈪䈐䇮৻ಽሶ䈏ੑ䈧䈱䊄䊜䉟䊮䈎䉌᭴ᚑ䈘䉏䈩䈇䉎䈖䈫䈏␜䈘䉏䈢䇯䈧䉁䉍䇮ੑ䈧䈱䊄䊜䉟䊮䈱⋧੕૞↪ᄌൻ䈏ၮ⾰䈱ャㅍ䈮㑐ଥ䈚䈩䈇䉎䈖䈫䈏␜ໂ䈘䉏䈢䇯] M. Noda, M. Yasuda, Y. Nakano, A. Ito, et al., Chem. Lett., 37, 396 (2008).

41⤑࠲ࡦࡄࠢ⾰ߩ᭴ㅧߣᯏ⢻⎇ⓥߩߚ߼ߩᭂૐ᷷㔚ሶ㗼ᓸ㏜ᛛⴚ⮮ศᅢೣ੩ㇺᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼
'OCKN䋺[QUJK"GODKQRJ[UM[QVQWCELR 㔚ሶ㗼ᓸ㏜ߪ᜛ᄢߒߡ‛ࠍ⷗ࠆߣ޿߁ᗧ๧ߢߪశቇ㗼ᓸ㏜ߣၮᧄ⊛ߦหߓߢ޽ࠆ߇‫ޔ‬ታ↪⊛ߥ࡟ࡦ࠭߇಴᧪ࠆᵄ㐳ߩ⍴޿㔚ሶ✢ࠍశḮߣߔࠆߩߢ‫ޔ‬ㅘㆊဳ㔚ሶ㗼ᓸ㏜ߪΈ࡟ࡌ࡞ߩಽ⸃⢻ࠍኈᤃߦ㆐ᚑߢ߈ࠆ‫ߦࠄߐޕ‬㊀ⷐߥ․ᓽߪ‫ޔ‬㔚ሶ✢ߣ‛⾰ߣߩ⋧੕૞↪߇ᄢ߈޿ߎߣߢ޽ࠆ‫․ߩߎޕ‬ᓽߪ‫ޔ‬㔚ሶ㗼ᓸ㏜ߩ㐳ᚲߣߒߡ߽⍴ᚲߣߒߡ߽௛޿ߡ޿ࠆ‫⋧ޕ‬੕૞↪
߇ᄢ߈޿ߎߣ߆ࠄ‫ޔ‬ᭂᓸ㊂ߩ⹜ᢱ߿‫ޔ‬ዪᚲ⊛ߥᖱႎࠍ⋥ធᓧࠆߎߣ߇ߢ߈ࠆ‫ޔ߃ࠁࠇߘޕ‬⭯ߊߡዊߐ޿⹜ᢱࠍⷰኤߔࠆߦߪ㔚ሶ㗼ᓸ㏜ߪᦨㆡߢ‫ޔ‬ᄙߊߩⷰኤ߇ߥߐࠇߡ޿ࠆ‫ޕ‬ㅒߦ㔚ሶ✢ߩㅘㆊᕈ߇ૐ޿ߩߢෘ޿⹜ᢱߩⷰኤߦߪ᭽‫ߥޘ‬Ꮏᄦ߇ᔅⷐߢ޽ࠆ‫⋧ޔߚ߹ޕ‬੕૞↪
߇ᄢ߈ߊߡࠊߕ߆ߥ⹜ᢱ߆ࠄᖱႎࠍขࠅ಴ߔߎߣ߇ߢ߈ࠆߣ޿߁㐳ᚲߩⵣߦߪ‫ޔ‬㔚ሶ✢ߦࠃࠆ៊்ߣ޿߁ᄢ߈ߥ໧㗴߇ሽ࿷ߔࠆ‫⹜‛↢ޔߦ․ޕ‬ᢱࠍⷰኤߔࠆ႐วߦߪߎߩ㔚ሶ✢ߦࠃࠆ៊்߇ᦨᄢߩ࿎㔍ߣߒߡ┙ߜߪߛ߆ࠆߎߣߦߥࠆ‫ޕ‬㔚ሶ✢៊்ߣ౒ߦ‛⾰ߣߩ⋧੕૞↪߇ᄢ߈޿ߎߣ߆ࠄ᧪ࠆ߽߁㧝ߟߩᷓೞߥ໧㗴ߪ‫ޔ‬㔚ሶ✢ߩㅢࠅ㆏ࠍ⌀ⓨߦឃ᳇ߒߥߌࠇ
߫ߥࠄߥ޿ߎߣߢ޽ࠆ‫⹜‛↢ޔߦ߼ߚߩߘޕ‬ᢱ߇ੇ῎ߒߡ‫ޔ‬᳓ࠍ฽߻᭴ㅧߣߪᄢ߈ߊᄌࠊ
ߞߡߒ߹߁ߣ޿߁໧㗴ࠍ࿁ㆱߒߚ
ࠅ⸃᳿ߒߚࠅߒߡ‫⋧ޔ‬੕૞↪߇ᄢ߈޿ߣ޿߁㐳ᚲࠍ↢߆ߔߎߣߦࠃ
ߞߡ‫ޔ‬㔚ሶ㗼ᓸ㏜ߪ⊒ዷߒߡ߈ߚ‫ޕ‬ ᦨೋߦ㔚ሶ㗼ᓸ㏜ߢಽሶ᭴ㅧ߇
ⷰኤߢ߈ࠆߎߣߪ‫ޔ‬Ⴎൻࡈ࠲ࡠࠪ
ࠕ࠾ࡦ㌃ߩൻቇᑼߣ߯ߞߚࠅߣว
߁௝߇᠟ᓇߐࠇࠆߎߣߢ⸽᣿ߐࠇ
ߚ߇‫ޔ‬਄⸥㧞ߟߩ໧㗴ࠍ⸃᳿ߔࠆ
ߚ߼ߦᭂૐ᷷㔚ሶ㗼ᓸ㏜߇ᔅⷐߢ޽ࠆ‫⹜ޕ‬ᢱߩ᷷ᐲࠍ㧤㧷એਅߩૐ᷷ߦ಄ළߔࠆߣቶ᷷ߩ㧞㧜୚ߦ៊்ࠍシᷫߢ߈ࠆ‫⹜ޔߦ߼ߚߩߎޕ‬ᢱࠍᭂૐ᷷ߦ಄ළߒߡߥ߅߆ߟ㜞ಽ⸃⢻ߩ௝ࠍ᠟ᓇߢ߈ࠆᭂૐ᷷㔚ሶ㗼ᓸ㏜߇㐿⊒ߐࠇߚ‫߁ࠃߩߎޕ‬ߥૐ᷷㔚ሶ㗼ᓸ㏜ߪ‫߁߽ޔ‬㧝ߟߩ໧㗴ߢ޽ࠆ‫⹜ޔ‬ᢱߩੇ῎ߩ໧㗴ࠍ࿑㧝ᭂૐ᷷㔚ሶ㗼ᓸ㏜⊒ዷߩᱧผ⸃᳿ߒߚ‫ߩࡊࠗ࠲ߩߎޕ‬ᭂૐ᷷㔚ሶ㗼ᓸ㏜ߪᡷ⦟ࠍ㊀ߨߟߟ⊒ዷߒߡ‫ޔ‬࿑㧝ߩࠃ߁ߦ╙㧣਎ઍߩⵝ⟎߹ߢ߇㐿⊒ߐࠇߡ‫ޔ‬એਅߦ␜ߔࠃ
߁ߥᔕ↪⎇ⓥߦᵴ↪ߐࠇߡ޿ࠆ‫ޕ‬㔚ሶ㗼ᓸ㏜ࠍ↪޿ߚ᭴ㅧ⸃ᨆߩ
ᣇᴺߣߒߡߪ‫ޔ‬㔚ሶ✢⚿᥏ቇߣ๭
߫ࠇࠆᣇᴺ߇޽ࠅ‫ޔ‬࿑㧞ߦ␜ߔࠃ߁ߥ᭴ㅧ⸃ᨆ߇ⴕࠊࠇߚ‫ޕ‬᳓࠴ࡖࡀ࡞߿ࠡࡖ࠶ࡊ⚿ว࠴ࡖࡀ࡞╬ߩ଀ࠍ⚫੺ߒߡ‫ޔ‬㔚ሶ㗼ᓸ㏜߇ߤߎ߹ߢ↢๮⑼ቇߩ⎇ⓥߦነਈߢ߈ࠆ
ࠃ߁ߦߥߞߡ߈ߚ߆ࠍౕ૕⊛ߦ⼏⺰ߒߚ޿‫ޕ‬࿑㧞ߎࠇ߹ߢߦ‫ޔ‬᭴ㅧ⸃ᨆߐࠇߚ⤑࠲ࡦࡄࠢ⾰422 ࡋ࡝࠙ࡓᶧ㕙㧞ᰴర㔚ሶߩࠛ࠶ࠫᝄേᷫ⴮ߩࡔࠞ࠾࠭ࡓ
ᣂ੗ᢅ৻ a, ጊਛୃม b, ⷏ਛᎹ⦟ᐔ c, ⍫ጊ⧷᮸ b, ⑔↰ᤘ d, Ỉ↰቟᮸ aa ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯b ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁c ਻Ꮊᄢቇ

ℂቇ⎇ⓥ㒮 ‛ℂቇㇱ㐷d ౓ᐶක⑼ᄢቇ

‛ℂቇᢎቶ

E-mail㧦toshikaz@scphys.kyoto-u.ac.jp ု⋥⏛႐ਛߦ߅߆ࠇߚ㧞ᰴర㔚ሶ♽ߦߪ‫ޔ‬㔚ሶኒᐲߩࠁࠄ߉߇㔚ሶ♽ߩࠛ࠶ࠫࠍવࠊࠆ
ૐ๟ᵄബ⿠߇޽ࠆ‫(ࡦࡕ࠭࡜ࡊ࠻ࡀࠣࡑࠫ࠶ࠛࠍࠇߎޕ‬EMP)ߣ޿߁‫ᦨߩߜߚ⑳ޕ‬ㄭߩ⎇ⓥߢ‫ޔ‬㔚ሶ♽ߩ㐽ߓߎ߼ࡐ࠹ࡦ
ࠪࡖ࡞ࠍᒙߊߔࠆߣᣂߒ޿

IUHT X HQ F\>N+]@EMP ᝄേࡕ࡯࠼߇಴⃻ߔࠆ

OLQ HZLG WK >N+]@D

E

ߎߣ߇ࠊ߆ߞߡ߈ߚ‫ޕ‬㐽ߓߎ߼߇ᒙ޿ߣ߈ߦ౒㡆✢᏷߇Ⴧᄢߒߡ޿ࠆ(࿑ 1)‫ޕ‬ᣂࡕ࡯࠼
ߪ.ࠛ࠶ࠫߩᄌᒻࠍߣ߽ߥ߁
EMP ߢ޽ࠆ‫ࠍࠇߎޕ‬ᬌ⸽ߔ
ࠆ‫ޕ‬


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* X DUG (OHFWURG H3RWHQ WLDO>9@࿑ 㩷 ࠛ࠶ࠫࡑࠣࡀ࠻ࡊ࡜࠭ࡕࡦ౒㡆๟ᵄᢙ C ߣ✢᏷ D ‫ޕ‬㐽ߓߎ߼ࡐ࠹ࡦࠪࡖ࡞߇ᒙ޿ߣ߈ߦ✢᏷߇Ⴧᄢߔࠆ‫ޕ‬

2㧞ጀ♽Q ಽᢙ㊂ሶࡎ࡯࡞⁁ᘒߦ߅ߌࠆ㊂ሶャㅍߣ࠰࡝࠻ࡦᩰሶ⋧ߩត⚝⑔↰ᤘ a㧘㑐Ꮉ⾆ผ b㧘ጤ↰৻᮸ b㧘ዊ═ේ⦟ᤩ b㧘㈕ઔ᧲ c㧘᫪Ꮉᥓ༑ b㧘ᵤ↰ᤚᢥ b㧘 ᣂ੗ᢅ৻ c㧘Ỉ↰቟᮸ ca
౓ᐶක⑼ᄢቇ‛ℂቇᢎቶ㧘b ੩ㇺᄢቇℂቇ⎇ⓥ⑼㧘
c
੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯
E-mail㧦fuku@hyo-med.ac.jp 㧞ጀ♽࡜ࡦ࠳࠙Ḱ૏භ᦭₸Q=1 ㊂ሶࡎ࡯࡞⁁ᘒߪ㧘ጀ㑆૏⋧ߦᏂⷞ⊛ߥࠦࡅ࡯࡟ࡦࠬࠍ
ᜬߜ㧘ⶄวࡏ࠰ࡦߩࡏ࡯ࠬಝ❗૕޽ࠆ޿ߪᱜሹ㧙㔚ሶኻߦࠃࠆࠛࠠࠪ࠻ࡦ⿥ᵹേ⁁ᘒߣ⠨߃ࠄࠇࠆߎߣ߇ℂ⺰⊛ߦឭ᩺ߐࠇߡ޿ࠆ‫৻ޕ‬ᣇ㧘2 ጀ♽ǵ=1/3 ㊂ሶࡎ࡯࡞⁁ᘒߪ㧘㔚ሶߦ⏛᧤ࠍ 2 ᧄ⾍ࠅઃߌߚⶄวࡈࠚ࡞ࡒ☸ሶߩ㧞ጀ♽Q=1 ㊂ሶࡎ࡯࡞⁁ᘒߣ⠨߃ࠄࠇࠆ‫ޕ‬ᓥߞߡ㧘2 ጀ♽ǵ=1/3 ㊂ሶࡎ࡯࡞⁁ᘒߣ 2 ጀ♽ǵ=1 ㊂ሶࡎ࡯࡞⁁ᘒࠍታ㛎⊛ߦᲧセᬌ⸛ߔࠆߎ
ߣߪᭂ߼ߡ⥝๧ᷓ޿‫ޕ‬ᚒ‫ߪޘ‬㧘㧞ጀ♽Q=1 ㊂ሶࡎ࡯࡞⁁ᘒߦ㕙ౝ⏛႐ࠍട߃ࠆߎߣߦࠃߞ
ߡ㧘ᡆࠬࡇࡦ⒎ᐨォ⒖ߦ઻߁⇣ᣇ⊛㔚᳇વዉࠍ᷹ⷰߒߚ 1‫ߪࠇߎޕ‬㧘㕙ౝ⏛႐ߦࠃߞߡ㧘ጀ㑆૏⋧߇ᄌ⺞ߐࠇ㧘ᡆࠬࡇࡦ࡮࠰࡝࠻ࡦߣ๭߫ࠇࠆ࠼ࡔࠗࡦ᭴ㅧ߇ሽ࿷ߔࠆߎߣࠍ␜ߔ
߽ߩߢ޽ࠆ‫⎇ᧄޕ‬ⓥߢߪ㧘㜞⒖േᐲࠍᜬߟඨዉ૕ 2 ᰴర㔚ሶ♽⹜ᢱࠍ↪޿ߡ㧘2 ጀ♽ǵ=1/3 ㊂ሶࡎ࡯࡞⁁ᘒߣ 2 ጀ♽ǵ=1 ㊂ሶࡎ࡯࡞⁁ᘒߩ㊂ሶャㅍ⃻⽎᷹ቯࠍⴕߞߚ‫⚿ߩߘޕ‬ᨐ㧘
2 ጀ♽ǵ=1/3 ㊂ሶࡎ࡯࡞⁁ᘒߩࡃ࡜ࡦࠬ⁁ᘒㄭறߢߪQ=1 ㊂ሶࡎ࡯࡞⁁ᘒߣ㘃ૃߒߚᝄࠆ
⥰޿ߩബ⿠߇㧘1 ጀ♽ᭂ㒢ߢߪోߊ⇣ߥࠆ߇ബ⿠⁁ᘒߩᝄࠆ⥰޿߇᷹ⷰߐࠇߚߩߢ㧘ߎࠇࠄߦߟ޿ߡႎ๔ߔࠆ‫ߚ߹ޕ‬ǵ=1/3 ㊂ሶࡎ࡯࡞⁁ᘒߦ߅ߌࠆ࠰࡝࠻ࡦᩰሶ⋧ߩត⚝ߦߟ޿ߡ߽ዷᦸߒߚ޿‫ޕ‬43

2㧞ጀ♽ ǵ ㊂ሶࡎ࡯࡞⁁ᘒߩࠬࡇࡦߣᡆࠬࡇࡦബ⿠ߩⷰኤ㈕ ઔ᧲ a, ᫪Ꮉ ᥓ༑ b, ⑔↰ ᤘ c, ᵤ↰ ᤚᢥ b, ᣂ੗ ᢅ৻ a, Ỉ↰ ቟᮸ aa੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ b ੩ㇺᄢቇ ℂቇ⎇ⓥ⑼‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁ c ౓ᐶක⑼ᄢቇ ‛ℂቇᢎቶ
E-mail㧦yd_zheng@ltm.kyoto-u.ac.jp
 㧞ጀ㊂ሶࡎ࡯࡞♽ߪࠬࡇࡦߣᡆࠬࡇࡦ(ጀ)ߩ⥄↱ᐲ߇޽ࠆߩߢ‫߽ᦨޔ‬ૐ޿ Landau Ḱ૏ߦ྾ߟߩ㔚ሶḰ૏߇ሽ࿷ߔࠆ‫ޔ‬භ᦭₸ ǎ=2/3 ෶ߪ Ȟ=2 ߩ႐วߘߩਛߢߤߩੑߟߩḰ૏߇㔚ሶߦභ߼ߐࠇࠆߩ߆‫ޔ‬ബ⿠⁁ᘒ߇ߤ߁ߥࠆߩ߆⥝๧ᷓ޿໧㗴ߢ޽ࠆ‫ߩ♽ߩࠄࠇߎޕ‬ၮᐩ⁁ᘒߪ SP-PU‫ޔ‬SP-PP ߣ SU-PP ਃߟߩ⋧߇޽ࠅ (SP/PP:ࠬࡇࡦ/ᡆࠬࡇࡦ஍ᭂ‫ޔ‬SU/PU:ࠬࡇࡦ/ᡆࠬࡇࡦ㕖஍ᭂ)[1]‫ޔ‬ബ⿠ߦߪ skyrmion䇮vortex 䈭䈬䈱䊝䊷䊄䈏䈅䉎䈫ℂ⺰⊛䈮䉅ታ㛎⊛䈮䉅␜䈘䉏䈢䇯䈚䈎䈚੹䉁䈪ബ⿠⁁ᘒߩ⎇ⓥߪᱴߤ Ȟ=2 ߢ‫ޔ‬Ȟ=2/3 ߩႎ๔ߪ߹ߛዋߥ޿‫ޕ‬ ᧄ⎇ⓥߪጀ㑆࠻ࡦࡀ࡞ࠛࡀ࡞ࠡ࡯ǍSAS=1 K ߩ GaAs/AlGaAs㧞ጀ㊂ሶ੗ᚭ⹜ᢱࠍ↪޿ߡ‫ޔ‬⏛᳇ᛶ᛫ Rxx ߣᵴᕈൻࠛࡀ࡞ࠡ࡯Ǎߩ✚㔚ሶኒᐲ nT‫ޔ‬ጀ㑆ኒᐲᏅǻ‫ޔ‬㕙ౝ⏛႐ B//෸߮✚⏛႐ Btot ߥߤߩଐሽᕈߩ᷹ቯߦࠃߞߡ Ȟ=2/3 ႐วߩၮᐩ⁁ᘒnT[1011cm-2]

1.6

࿁ߪߎߩ⚿ᨐࠍႎ๔ߔࠆ‫ޕ‬࿑ 1 ߪ Ȟ=2/3 ᤨߩ Rxx ߩ nT ߣǻߩଐሽᕈࠍ␜ߒߚታ㛎࠺࡯࠲ߢ‫ޔ‬ℂ⺰⸘▚ߩㅢࠅ‫ޔ‬ฦ⋧[1] N. Kumada et al.: Phys. Rev. B 69, 155319 (2004).












SP-PP Phase

1.4
1.2
1.0
SU-PP Phase

0.8
Rxx[k:]

ߪߪߞ߈ࠅⷰኤߢ߈ߚ‫ޕ‬Q 

1.8 SP-PU Phaseߩ⋧‫ޔ‬ബ⿠⁁ᘒ‫ ߦ․ޔ‬skyrmion ബ⿠ߩ․ᕈࠍ⺞ߴࠆ‫੹ޕ‬

0.6
0.4
0.0

0.2

0.4

V

0.6

0.8

1.0

࿑ 1㩷 ⏛᳇ᛶ᛫ Rxx ߩ✚㔚ሶኒᐲ nT ߣጀ㑆ኒᐲᏅǻߩଐሽᕈ

2㧞ጀ♽ǵ ㊂ሶࡎ࡯࡞⁁ᘒߦ߅ߌࠆࡅࠬ࠹࡝ࠪࠬߩ᷹ⷰᵤ↰ᤚᢥ a, ᫪Ꮉ ᥓ༑ a, ⑔↰ ᤘ b, ㈕ ઔ᧲ c, ᣂ੗ ᢅ৻ c, Ỉ↰ ቟᮸ ca ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ౓ᐶක⑼ᄢቇ

‛ℂቇᢎቶ㧘 c ੩ㇺᄢቇ ૐ᷷‛⾰⑼ቇ⎇ⓥ䉶䊮䉺䊷E-mail䋺shibun@scphys.kyoto-u.ac.jp 䋲ጀ♽㊂ሶ䊖䊷䊦⁁ᘒ䈲䇮ጀ䈱⥄↱ᐲ䈫ጀ㑆⋧੕૞↪䈮䉋䉍䇮ᄙᓀ䈭⃻⽎䈏⷗䉌䉏䉎⥝๧ᷓ䈇♽䈪䈅䉎䇯 ጀ♽Q=2/3 ㊂ሶ䊖䊷䊦⁁ᘒ䈪䈲䇮䉴䊏䊮䈱஍ᭂ䈏㑐䉒䈦䈩䈇䉎䊍䉴䊁䊥䉲䉴䈏⷗䈧䈎䈦
䈩䈍䉍=?䇮䈖䉏䈮ጀ䈱⥄↱ᐲ䈏ട䉒䉎䈖䈫䈮䉋䉍䊍䉴䊁䊥䉲䉴䈏䈬䈱䉋䈉䈮ᄌ⽩䈜䉎䈎⥝๧ᷓ䈇䇯ᚒ䇱䈲䋲ጀ♽㊂ሶ䊖䊷䊦ലᨐ䈱⏛᳇ᛶ᛫᷹ቯ䉕ⴕ䈇䇮Q=4/3 ⁁ᘒ䈱๟䉍䈪Ꮒᄢ䈭䊍䉴䊁䊥䉲䉴⃻⽎䉕⷗䈧䈔䈢䇯࿑䋱䈲⏛᳇ᛶ᛫䈏⏛႐䈱᝹ᒁᣇะ䈮䉋䈦䈩ᄌൻ䈚䈩䈇䉎᭽ሶ䈪䈅䉎䇯⍫ශ䈲⏛႐䈱᝹ᒁᣇะ䉕⴫䈚䈩䈍䉍䇮Q=4/3 䉕ਛᔃ䈫䈚䈩⏛᳇ᛶ᛫䈮ᄢ䈐䈭䊍䉴䊁䊥䉲䉴䈏䈅䉎䈖䈫䈏ಽ䈎䉎䇯䈖䈱䊍䉴䊁䊥䉲䉴䈱䊜䉦䊆䉵䊛䉕⸃᣿䈜䉎䈢䉄䇮⏛႐䉕Q=4/3 ⁁ᘒ䈮⋧ᒰ䈜䉎୯䈱๟䉍䈪࿕ቯ䈚䇮⏛᳇ᛶ᛫䈱ᤨ㑆ᄌൻ䉕⺞䈼䉎ታ㛎䉕ⴕ䈦䈢䈫䈖䉐䇮⹜ᢱౝㇱ䈮ᩭ䉴䊏䊮஍ᭂ䈮䉋䉎᦭ല⏛႐䈏ᒻᚑ䈘䉏䈩䈇䉎น⢻ᕈ䈏␜ໂ䈘䉏䈢䇯[1] S.Kronmüller et al., Phys.Rev.Lett. 81, 2526 (1998).

44࿑㧝 ⏛႐᝹ᒁߦ
ኻߔࠆ⏛᳇ᛶ᛫
Rxx ߩᄌൻ

2 ࠻ࡦࡀ࡝ࡦࠣࠛࡀ࡞ࠡ࡯- ߦ߅ߌࠆੑጀ♽Q ㊂ሶࡎ࡯࡞⁁ᘒߦߟ޿ߡ
֣✚㔚ሶኒᐲଐሽᕈ߅ࠃ߮㔚ሶኒᐲᲧଐሽᕈߩⷰኤ֣᫪Ꮉ ᥓ༑ a, ㈕ ઔ᧲ a, ⑔↰ ᤘ b, ᵤ↰ ᤚᢥ a, ᣂ੗ᢅ৻ c, Ỉ↰቟᮸ ca ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁, b ౓ᐶක⑼ᄢቇ කቇㇱ ‛ℂቇᢎቶc ੩ㇺᄢቇ ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯
E-mail㧦morikawa@scphys.kyoto-u.ac.jp
 ㊂ሶࡎ࡯࡞⁁ᘒߣߪ‫ޔ‬ૐ᷷ᒝ⏛႐ਅߩੑᰴర㔚ሶ㕙߇ࡎ࡯࡞ᛶ᛫㊂ሶൻ߿⏛᳇ᛶ᛫ᶖᄬ
ࠍ⿠ߎߒߚ⁁ᘒߩߎߣߢ޽ࠆ‫᧤⏛ޔߦ․ޕ‬㊂ሶߣ㔚ሶߩⶄวࡏ࠰ࡦߦࠃࠆࡏ࡯ࠬ࡮ࠕࠗࡦ
ࠪࡘ࠲ࠗࡦಝ❗ߩ৻⒳ߛߣ⷗ߥߐࠇߡ޿ࠆੑጀ♽Q=1 ㊂ሶࡎ࡯࡞⁁ᘒߪ‫৻ޔ‬ጀ♽ߢ޽ࠇ߫ߪ࠻ࡦࡀ࡝ࡦࠣࠛࡀ࡞ࠡ࡯1K ߩ⹜ᢱࠍ↪޿‫ޔ‬ੑጀߩ✚㔚ሶኒᐲ߿㔚ሶኒᐲᲧࠍᄌൻߐߖߥ
߇ࠄᵴᕈൻࠛࡀ࡞ࠡ࡯ࠍ᷹ቯߒߚ‫ޕ‬࿑㧝ߪᵴᕈൻࠛࡀ࡞ࠡ࡯ߩ✚㔚ሶኒᐲଐሽᕈࠍ␜ߒߡ
޿ࠆ߇‫ޔ‬㜞޿✚㔚ሶኒᐲߢߪᵴᕈൻࠛࡀ࡞ࠡ
࡯߇ૐߊߥߞߡ޿ࠆߎߣ߇ಽ߆ࠆ‫ޕ‬੤ᵹળߢߪ‫ޔ‬㔚ሶߩหጀ㑆⋧੕૞↪߿⇣ጀ㑆⋧੕૞↪

ᵴᕈൻࠛࡀ࡞ࠡ࡯=-?

ᧄ᧪ߪ㊂ሶࡎ࡯࡞⁁ᘒߦߥࠄߥ޿᧦ઙਅߢߩ㊂ሶࡎ࡯࡞⁁ᘒߣߒߡᵈ⋡ߐࠇߡ޿ࠆ‫ޕ‬ᚒ‫ޘ‬



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


ߣᚒ‫ߩޘ‬ታ㛎ߣߩ㑐ଥࠍ⺑᣿ߒߚ਄ߢ‫ޔ‬㕖㊂ሶࡎ࡯࡞ലᨐォ⒖ߦߟ޿ߡ⼏⺰ߒߚ޿‫ޕ‬㔚ሶኒᐲᲧ㧔೨ጀᓟጀ㧕


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


✚㔚ሶኒᐲ= EO ?
࿑ 1 : ᵴᕈൻࠛࡀ࡞ࠡ࡯ߩ✚㔚ሶኒᐲଐሽᕈ

2ൻቇ⊛ᚻᴺߦࠃࠆࠣ࡜ࡈࠚࡦ࠽ࡁ࡝ࡏࡦ⹜ᢱ૞⵾a⷏ਛᎹ ⦟ᐔ‫ޔ‬b ᣂ੗ ᢅ৻‫ޔ‬c ⑔↰ ᤘ‫ޔ‬b Ỉ↰ ቟᮸‫ޔ‬b ኹ᎑ ቁੳa੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b੩ㇺᄢቇ ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯‫ޔ‬c ౓ᐶක⑼ᄢቇ ‛ℂቇᢎቶ

E-mail㧦nishinakagawa@scphys.kyouto-u.ac.jp
 ࠣ࡜ࡈࠚࡦߣߪ὇⚛ේሶ߇ⱎߩᎽᩰሶࠍ⚵ࠎߛනጀ㤥㋦ߩߎߣߢ޽
ࠆ‫ޕ‬චಽዊߐ޿ࠣ࡜ࡈࠚࡦߩ㔚ሶ‛ᕈߪ┵ߩ᭴ㅧߦᢅᗵߢ޽ࠆ‫ߩߘޕ‬ߚ߼᏷߇࠽ࡁࠨࠗ࠭ߩࠣ࡜ࡈࠚࡦ࠽ࡁ࡝ࡏࡦ(GNR)⹜ᢱߪ‫⹜ޔ‬ᢱߩ᏷߿┵ߩේሶ᭴ㅧࠍᄌ߃ࠆߎߣߢ㔚ሶ‛ᕈ߇ᄢ߈ߊ⇣ߥࠆߣ੍ᗐߐࠇߡ޿ࠆ‫ޕ‬ ᚒ‫ ߪޘ‬X. Li ࠄߣหߓᣇᴺߢ GNR ⹜ᢱࠍ૞ᚑߒߚ[1]‫⤘ޕ‬ᒛ㤥㋦ࠍ
ᕆỗߦടᾲߔࠆߎߣߦࠃࠅනጀ‫ߪߚ߹ޔ‬ᢙጀߩࠣ࡜ࡈࠚࡦߦಽ߆ࠇࠆ‫ޕ‬ߘߩਛ߆ࠄ‫⹜ߩ⁁ࡦࡏ࡝ޔ‬ᢱߛߌขࠅ಴ߔߣ޿߁߿ࠅᣇߢ޽ࠆ‫ޕ‬࿑ 1
ߪ GNR ߩේሶ㑆ജ㗼ᓸ㏜(AFM)௝ߢ޽ࠆ‫੹ޕ‬࿁૞ᚑߒߚ GNR ߪ᏷
10nm㨪200nm‫ޔ‬㜞ߐ 0.8nm㨪4nm‫ޔ‬㐳ߐ 1Pm㨪30Pm ߢ޽ࠆ‫ߩ┵ޕ‬ലᨐ߇චಽᦼᓙߢ߈ࠆ᏷ 10nm ߩ⹜ᢱ߽૞ࠆߎߣ߇ߢ߈ߚ‫⃻ޕ‬࿷ߎߩ૞࿑ 1 GNR ⹜ᢱߩ AFM
௝‫޿⊕ޕ‬㐳ᣇᒻߢ࿐߹
ࠇߚߩ߇ GNR ⹜ᢱ‫ޕ‬

ᚑߒߚ GNR ⹜ᢱߦ㔚ᭂࠍઃߌࠆ૞ᬺ߇ㅴⴕߒߡ޿ࠆ‫ޕ‬ ⎇ⓥળߢߪ⹜ᢱ૞⵾ߩ⹦⚦ߣ੹ᓟߩ⎇ⓥ⸘↹ߦߟ޿ߡႎ๔ߔࠆ‫ޕ‬[1] X. Li et al., Science 319 1229 (2008)45

2㊀޿㔚ሶ♽⿥વዉ૕ %G%Q+P ߩࠛࡇ࠲ࠠࠪࡖ࡞⭯⤑ߩ૞⵾ߣ⹏ଔ
ባᚭኡ᣿ C᳓਄㓶ᄥ D቟৻᮸ D⦼ౝቁ⑓ D᧻↰␭ม Dኹ᎑ቁੳ C
C੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

D

੩ㇺᄢቇℂቇ⎇ⓥ⑼‛ℂቇቝቮ‛ℂቇኾ᡹‛ℂቇ╙৻ಽ㊁

E-mail䋺shishido@scphys.kyoto-u.ac.jp
 I 㔚ሶ䉕ᜬ䈧 &H ൻว‛䈲ᒝ⋧㑐㔚ሶ♽䈱ౖဳ‛⾰䈱৻䈧䈪䈅䉍䋬ૐ᷷䈪㔚ሶ䈱᦭ല⾰㊂䈏⥄↱㔚ሶ䈱  ୚⒟ᐲ䈮䉅㆐䈜䉎䇸㊀䈇㔚ሶ♽䇹䉕ᒻᚑ䈜䉎䋮㊀޿㔚ሶ♽ߪ੹߹ߢ⍮ࠄࠇߡ޿ࠆਛߢᦨ߽㔚ሶ⋧㑐ߩᒝ޿♽ߢ޽ࠆ㧚㊀޿㔚ሶ♽ߩਛߦߪᒝ޿㔚ሶ⋧㑐ߦ⿠࿃ߒߡ㕖ᓥ᧪ဳߩ⿥વዉࠍ␜ߔ‛⾰߇⍮ࠄࠇߡ߅ࠅ㧘30 ᐕએ਄߽ߩ㑆⎇ⓥߐࠇߡ޿ࠆ㧚CeCoIn5 ߪ
2000 ᐕߦߥߞߡ⊒⷗ߐࠇߚ㊀޿㔚ሶ♽ߩ⿥વዉ૕ߢ޽ࠆ߇㧘ߘߩ⿥વዉォ⒖᷷ᐲ Tc = 2.3
K ߣᓥ᧪⍮ࠄࠇߡ޿ߚ㊀޿㔚ሶ♽⿥વዉ૕ߩਛߢߪᦨ߽㜞޿ߎߣ㧘ో⿥વዉ૕ߩਛߢೋ߼
ߡૐ᷷࡮㜞⏛႐⋧ߢ⿥વዉォ⒖߇  ᰴ⋧ォ⒖ߦߥߞߡ޿ࠆߎߣ㧘⿥વዉ⋧ౝߩૐ᷷࡮㜞⏛႐㗔ၞߢ  ᰴ⋧ォ⒖߇⃻ࠇࠆߎߣߥߤ㧘᭽‫⥝ߥޘ‬๧ᷓ޿‛ᕈ߇⃻ࠇߡ߅ࠅ㧘⋓ࠎߦ⎇ⓥߐ
ࠇߡ޿ࠆ㧚ᚒ‫ ߪޘ‬CeCoIn5 ߩ․⇣ߥ⿥વዉ⁁ᘒߦߟ޿ߡᣂߚߥ⍮⷗ࠍᓧࠆߚ߼㧘⴫㕙߇⦟ߊ೙ᓮߐࠇ਌ߟᓸ⚦ടᎿ߇น⢻ߥ⭯⤑ߩ૞⵾ࠍಽሶ✢ࠛࡇ࠲ࠢࠪ࡯ᴺࠍ↪޿ߡⴕߞߚ㧚ᚒ‫ࠍࡊ࡯࡞ࠣߩޘ‬฽߻ᓥ᧪ߩ⎇ⓥߢߪၮ᧼ߩ⚿᥏ᣇ૏ߣ CeCoIn5 ⭯⤑ߩ⚿᥏ᣇ૏߇ឥߞߚ
ࠛࡇ࠲ࠠࠪࡖ࡞⭯⤑ߪᓧࠄࠇߡ޿ߥ߆ߞߚ߇㧘੹࿁‫ޔ‬ᚒ‫ߪޘ‬ᩰሶߩࡑ࠶࠴ࡦࠣߩ⦟޿ၮ᧼
਄ߦᚑ㐳ߔࠆߎߣߢ‫ޔ‬ೋ߼ߡߎࠇࠍᓧࠆߎߣߦᚑഞߒߚ㧚߹ߚᚒ‫ߪ⤑ߩޘ‬㔚᳇ᛶ᛫₸ߩᝄࠆ⥰޿㧘Tc ߥߤࡃ࡞ࠢන⚿᥏ࠍ⦟ߊౣ⃻ߒߚ㧚2㋕♽⿥વዉ૕ AEFe2(As1-xPx)2 ⚐⦟න⚿᥏ߩ‛ᕈ═ේ ᚑ a, ⦼ౝ ቁ⑓ a, ᧻↰ ␭ੑ c, ኹ᎑ ቁੳ a,a ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯b ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁

E-mail㧦kasa@scphys.kyoto-u.ac.jp㋕♽㜞᷷⿥વዉ૕ߢ޽ࠆ AEFe2As2 ♽(AE = Ba, Sr, Ca)ߩ࠾ࠢ࠲ࠗ࠼ߪ‫ޔ‬As ࠨࠗ࠻ࠍ╬ଔర⚛ߢ޽ࠆ P ߢ⟎឵ߔࠆߎߣߦࠃࠅ‫ޔ‬ൻቇ⊛ߥଔᢙᠲ૞ࠍ੺ߒߚࠠࡖ࡝ࠕ࠼࡯ࡊࠍ઻ࠊߕ
ߦ෻ᒝ⏛ᕈ⊛ࠬࡇࡦኒᐲᵄ(SDW)⁁ᘒ߇ᛥ೙ߐࠇ‫ޔ‬AE = Ba ߦ߅޿ߡᦨ㜞 31 K ߩ⿥વዉ߇
ታ⃻ߔࠆ‫⿥ߩߎޕ‬વዉߪ‫⚿ޔ‬᥏ᩰሶߩᄌᒻ‫ޔ‬හߜ‫ޔ‬ൻቇ⊛࿶ജലᨐߦࠃࠅ⺃⿠ߐࠇࠆߣ⠨߃ࠄࠇ‫⵬߇ࠕ࡝ࡖࠠޔ‬ఘߐࠇߚ߹߹ SDW ⋧߆ࠄ⿥વዉ⋧߹ߢࠍ♽⛔⊛ߦᓧࠆߎߣ߇น⢻ߥᧄ♽ߪ‫ޔ‬㋕࠾ࠢ࠲ࠗ࠼ߦ߅ߌࠆ㜞᷷⿥વዉࠍℂ⸃ߔࠆ਄ߢ㕖Ᏹߦ㊀ⷐߥࡕ࠺࡞‛⾰ߣߥࠆ‫ޕ‬ᚒ‫ޔߪޘ‬BaFe2(As1-xPx)2 ⚐⦟න⚿᥏ߩ♽⛔⊛ߥ⢒ᚑߦᚑഞߒ‫ޔ‬㔚᳇ᛶ᛫₸‫࡞࡯ࡎޔ‬ଥᢙ‫ޔ‬⏛᳇ᛶ᛫╬ߩ㔚ሶャㅍ⃻⽎ߦ߅ߌࠆ㕖ࡈࠚ࡞ࡒᶧ૕⊛ᝄࠆ⥰޿[1]‫ޔ‬㋕⎆⚛♽⿥વዉ૕ߩ࿕
ṁၞߣߒߡೋߣߥࠆ dHvA ᝄേߩ᷹ⷰ‫ޔ‬෸߮᦭ല⾰㊂‫ࡒ࡞ࠚࡈޔ‬㕙ߩᄌൻ[2]‫ޔ‬ਗ߮ߦࡈࠚ
࡞ࡒ㕙਄ߦ߅޿ߡ࡜ࠗࡦࡁ࡯࠼ࠍ઻߁⿥વዉࠡࡖ࠶ࡊ᭴ㅧߩሽ࿷[3,4]ࠍ᣿ࠄ߆ߦߒߡ߈ߚ‫ޕ‬ᧄ⎇ⓥળߢߪ‫ᦨߊߏޔ‬ㄭ⢒ᚑߦᚑഞߒߚ SrFe2(As1-xPx)2 ෸߮ CaFe2(As1-xPx)2 න⚿᥏⹜ᢱߩ‛ᕈߣวࠊߖߡߎߩ♽ߩ⼏⺰ࠍⴕ߁‫ޕ‬ዏ‫⎇ᧄޔ‬ⓥߪ‛ℂቇ╙৻ಽ㊁࡮࿕૕㔚ሶ‛ᕈ⎇ⓥቶߩ⻉᳁ߣߩ౒ห⎇ⓥߦࠃࠆ‫ޕ‬[1] S. Kasahara et al., arXiv:0905.4427. [2] H. Shishido et al., Phys. Rev. Lett. 104, 057008 (2010).
[3] K. Hashimoto et al., arXiv:0907.4399. [4] Y. Nakai et al., Phys. Rev. B 81 020503(R) (2010).
46

2ⷙೣ⊛࠽ࡁ᭴ㅧࠍ↪޿ߚᣂᄸ *G ⿥ᵹേ⁁ᘒߩត⚝ᚭ↰ ੫ a, b, ૒‫ ⼾ ᧁޘ‬a, ba੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ‛ℂቇ࡮ቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ䉶䊮䉺䊷E-mail䋺rftoda@scphys.kyoto-u.ac.jp
3

He 䈱⿥ᵹേ⒎ᐨᄌᢙ䈲᭽䇱䈭ኻ⒓ᕈ䋨⋧䋩䉕ᜬ䈤䈉䉎䇯䊋䊦䉪૕䈪䈲 A ⋧䇮B ⋧䈱䉂䈏ታ⃻䈘䉏䉎䈏䇮䉮䊍䊷䊧䊮䉴㐳([=10–100 nm)⒟ᐲ䈱䉴䉬䊷䊦䈪ო㕙䈏ሽ࿷䈜䉎೙㒢ⓨ㑆䈮䈍䈇䈩䈲䇮䈠䈱ⓨ㑆᭴ㅧ䈏⋧᳿ቯ䈮ኻ䈚䈩㊀ⷐ䈭ᓎഀ䉕ᨐ䈢䈜䉋䈉䈮䈭䉍䇮⇣䈭䉎ኻ⒓ᕈ䉕ᜬ䈦䈢⿥ᵹേ⋧䈏⃻䉏䉎น⢻ᕈ䈏䈅䉎䇯䈢䈫䈋䈳[䈱ᢙ୚⒟ᐲ䈱⋥ᓘ䉕ᜬ䈧⚦䈇౞╴ౝ䈪䈲䇮Polar ⁁ᘒ䈏ᅢ䉁䉏䉎䈫⠨䈋䉌䉏䇮ABM-Polar ᷙว⁁ᘒ䉇䇮⚐ Polar ⁁ᘒ䈱಴⃻䈏ℂ⺰⊛䈮੍᷹䈘䉏䈩䈇䉎[Y.H.Li and
T.L.Ho, PRB 38, 2362 (1988), A.L.Fetter, S. Ullah, JLTP 70, 515]䇯ᚒ䇱䈲䇮ㄭᐕ⊒ዷ䈚䈩䈐䈢䊅䊉ടᎿᛛⴚ䉕↪

䈇䈩ⷙೣ⊛䈭೙㒢ⓨ㑆䈱䉂䉕฽䉃᷹ⷰⓨ㑆䉕૞ᚑ䈚䇮䈖䉏䉁䈪⊒⷗䈘䉏䈩䈇䈭䈇ᣂ䈚䈇⋧䉕ታ⃻䈜䉎䈖䈫䉕⋡ᜰ䈚䈩䈇䉎䇯3He ⿥ᵹേ⋧䈱ኻ⒓ᕈ䈲 Pulsed-NMR 䈮䉋䈦䈩⹦䈚䈒⺞䈼䉎䈖䈫䈏䈪䈐䉎䇯䈚䈎䈚䇮೙㒢ⓨ㑆ਛ䈮䈅䉎ዋ㊂䈱 3He 䉕♖ᐲ⦟䈒᷹ⷰ䈜䉎䈢䉄䈮䈲䇮NMR ᷹ቯ䈱ᗵᐲ䉕䊋䊦䉪ᶧ૕䈱᷹ⷰ䈱႐ว䉋䉍ᄢ᏷䈮ะ਄䈘䈞䉎ᔅⷐ䈏䈅䉎䇯䈖䈱䈢䉄䇮ᚒ䇱䈲 SQUID 䉕↪䈇䈩ᓥ᧪䉋䉍䉅㜞ᗵᐲ䈭 NMR ᷹ቯ䉕䈪䈐䉎䉋䈉䈮䈜䉎䈖䈫䉕⠨䈋䈩䈇䉎䇯䊘䉴䉺䊷䈪䈲ᣂᄸ⿥ᵹേ⋧䈏ᦼᓙ䈪䈐䉎ⓨ㑆᭴ㅧ䈍䉋䈶䈠䈱૞ᚑᣇᴺ䇮䉁䈢䇮SQUID 䉕↪䈇䈢 NMR ᷹ቯᗵᐲะ਄䈮䈧䈇䈩⼏⺰䉕ⴕ䈉䇯
2⿥ᵹേࡋ࡝࠙ࡓ㧟ਛߩ㐳ኼ๮ 0/4 ାภߩᷫ⴮ᯏ᭴
㊄ᧄ ⌀⍮ a,ᚭ↰ ੫ a,b,↰ਛ ␭テ a,የ਄ ࠊ߆ᄹ a,ⷺ↰ ᥓᐘ a,૒‫ ⼾ ᧁޘ‬a,ba ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇ㨯ቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦kanemoto@scphys.kyoto-u.ac.jp
 ⿥ᵹേ㧟He ߦ߅ߌࠆ NMR ᷹ቯߢߪ㕖Ᏹߦ㐳ኼ๮ߩ㜞޿ࠦࡅ࡯࡟ࡦࠬࠍᜬߟ FID ାภ߇ᓧࠄࠇࠆ‫ޕ‬ኼ๮ߪૐ᷷߶ߤ㐳ߊ‫ᦨޔ‬㐳ߢ 30 ಽએ਄ߦ߽෸߱‫ߩߎ߼ߚߩߘޕ‬ାภߪ
persistent precessing domain (PPD) ାภߣ๭߫ࠇࠆ‫ޕ‬ਇဋ৻ߥࡐ࠹ࡦࠪࡖ࡞ਛߢⓨ㑆⊛ߦಽᏓߒߚోߊหߓ૏⋧ࠍᜬߟ⏛ൻߩᱦᏅㆇേߪ‫ޔ‬ᵄᢙ 0 ߩࡑࠣࡁࡦߛߌ߇ᄢ㊂ߦബ⿠ߒᭂሶ⋧੕૞↪ߦၮߠߊ๟ᵄᢙࠪࡈ࠻ߪࡑࠣࡁࡦߦߣߞߡࡐ
࠹ࡦࠪࡖ࡞ߣߒߡ௛߈‫ ࡦࡁࠣࡑޔ‬BEC ߪߘߩᐩߦḳ߹ࠆ‫ޕ‬ᚒ‫ߢࠕࠗࠔࡈࠨߪޘ‬಴᧪ߚ࠮࡞ߢ⿥ᵹേ㧟He ࠍ಄ළߒ‫ޔ‬છᗧᣇะߦ⏛႐൨㈩ࠍ߆ߌࠆߎߣߦࠃࠅࡑࠣࡁࡦ BEC ߩ↢ᚑߔࠆ႐ᚲࠍ೙ᓮߔࠆߎߣߦᚑഞߒߚ‫⚿ߩߘޕ‬ᨐ‫ࠣࡑޔ‬ࡁࡦ BEC ߩᷫ⴮ᯏ᭴߇‫ޔ‬᷷ᐲߦଐሽߖߕოߣធߔࠆㇱಽߩߺߢ⿠ߎࠆㅦ޿ᷫ⴮ᯏ᭴ߣ‫ޔ‬᷷ᐲߦᒝߊଐሽߒኈེოߦ
ធߒߥ޿⁁ᴫߢ߽௛ߊ‫ ࡦࡁࠣࡑޔ‬BEC ߩ⴫㕙ߢ⿠ߎࠆᷫ

10000
5000
Intensity (arb.)ߚ‫ ࡦࡁࠣࡑޔ‬BEC ߣ⠨߃ࠆߎߣ߇ߢ߈ࠆ‫ޕ‬ᄖㇱ⏛႐ߣ෺

MF

WF

MS

1000
500

G=2.4mT/m
T (deg)
0 (+x)
51
90 (+z)127WS
180 (–x)

100
50
10
0

10

20
30
t (sec)40

30 ᐲࡄ࡞ࠬߩᓟߩ FID ାภߩᝄ᏷

⴮ᯏ᭴ߦಽߌࠄࠇࠆߎߣ߇್᣿ߒߚ‫ޕ‬47

2ᭂᓸ㊂ *G ࠍ฽߻࿕૕ *G ߦ߅ߌࠆᝦࠇᝄࠅሶߣ 0/4 ߩหᤨ᷹ቯ
የ਄ࠊ߆ᄹ a, ᚭ↰੫ a, b, ㊄ᧄ⌀⍮ a, ⷺ↰ᥓᐘ a, ↰ਛ૓テ a, ૒‫ ⼾ᧁޘ‬a, ba ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇ࡮ቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦onoe@scphys.kyoto-u.ac.jp
 ᝦࠇᝄࠅሶ᷹ቯߦࠃࠆ NCRI(㕖ฎౖ࿁ォᘠᕈ)ᔕ╵ࠍᩮ᜚ߣߔࠆ‫ޔ‬࿕
૕ 4He ߩ⿥ᵹേ⊛ᝄࠆ⥰޿߇ᵈ⋡ࠍ㓸߼ߡ޿ࠆ‫ߩߎޕ‬ᔕ╵ߦ㑐ߒߡߪ
ᭂᓸ㊂ߩਇ⚐‛ 3He ߦኻߔࠆ․⇣ߥỚᐲଐሽᕈ߇ႎ๔ߐࠇߡ߅ࠅ‫ޔ‬ᚒ‫ߪޘ‬ᝦࠇᝄࠅሶ᷹ቯߣหᤨߦᓸ㊂ 3He ߦኻߔࠆ NMR ᷹ቯࠍⴕ߁ߎ
ߣߢߎߩ⃻⽎ߩ⸃᣿ࠍ⋡ᜰߒߡ޿ࠆ‫ޕ‬
ⶄᢙߩ

3He

Ớᐲߩ⇣ߥࠆ(10㨪300ppm)⹜ᢱߦኻߔࠆ᷹ቯ

߆ࠄ‫ޔ‬100mK ᒙߩ⋧ಽ㔌᷷ᐲએਅߢ 3He ߪࠢ࡜ࠬ࠲࡯ࠍᒻ
ᚑߔࠆߎߣ‫✭ߪߦ࡯࠲ࠬ࡜ࠢޔ‬๺ᤨ㑆ߩ⇣ߥࠆ(S)ᚑಽߣ(L)ᚑಽߣ‫ߪߣࠇߘߚ߹ޔ‬೎ߦ✭๺ᤨ㑆߇㐳ߊߡ᷹ⷰߢ߈ߥ޿(I)ᚑಽ߇޽ࠆߎߣ߇ࠊ߆ߞߚ‫ᤨޕ‬ቯᢙ߿⚿᥏ਛߢߩ቟ቯᕈߥߤ
ߩ㆑޿߆ࠄ‫(ޔ‬S),(L)ᚑಽ߇ߘࠇߙࠇ⚿᥏ߩੂࠇߚㇱಽ‫ޔ‬ဋ৻ߥㇱಽߦᒻᚑߐࠇߚࠢ࡜ࠬ࠲
࡯‫(ޔ‬I)ᚑಽ߇⚿᥏ో૕ߦቅ┙ߒߡಽᏓߔࠆ 3He ේሶߢ޽ࠆߣផ᷹ߒߡ޿ࠆ‫ߦࠄߐޕ‬ฦᚑಽ
ߩ㊂ߩ 3He Ớᐲଐሽᕈ߆ࠄ‫(ޔ‬S)ᚑಽ߇ NCRI ߩᛥ೙ߦነਈ‫(ߜࠊߥߔޔ‬S)ᚑಽ߇ಽᏓߔࠆ
ߣផ᷹ߔࠆ⚿᥏ਛߩੂࠇߚㇱಽ߇ NCRI ᔕ╵ࠍ⿠ߎߒߡ޿ࠆߩߢߪߥ޿߆ߣ⠨߃ߡ޿ࠆ‫ޕ‬
2ⓨሹ₸ ߩࠛࠕࡠࠫࠚ࡞ਛߩ⿥ᵹേࡋ࡝࠙ࡓ㧟ߩ⏛ൻ₸↰ਛ ૓テ a, ཅᚭ 㓉੺ b, የ਄ ࠊ߆ᄹ a, ⷺ↰ ᥓᐘ a, ㊄ᧄ ⌀⍮ a, ᚭ↰੫ a,c, ૒‫ ⼾ ᧁޘ‬a,ca ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇ࡮ቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ᄢ㒋Ꮢ┙ᄢቇℂቇ⎇ⓥ⑼c ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦y.tanaka@scphys.kyoto-u.ac.jp
 ࠛࠕࡠࠫࠚ࡞ߣߪ‫ోޔ‬૕Ⓧߩᢙ%ࠍ SiO2 ߩ㎮߇⛊ߺวߞߚ߽ߩ߇භ߼ࠆ‛⾰ߢ޽ࠆ‫ࡠࠕࠛޕ‬࿑㧝 ࠛࠕࡠࠫࠚ࡞

ࠫࠚ࡞ߩਇ⚐‛ലᨐߢࠝ࡯࠳࡯ࡄ࡜ࡔ࡯࠲ߩࠡࡖ
࠶ࡊࠛࡀ࡞ࠡ࡯'߇ᛥ೙ߐࠇࠆߚ߼‫ࠚࠫࡠࠕࠛޔ‬๟ᵄᢙࠪࡈ࠻㊂ߩૐਅ‫ޔ‬B ⋧ߢߩ⏛ൻ₸ᄌൻߩᛥ೙ߥߤߩലᨐ߇⃻ࠇࠆ‫ޕ‬ᚒ‫ߪޘ‬ⓨሹ₸ 97.5%ߩࠛ
ࠕࡠࠫࠚ࡞ਛߩ 3He ߦߟ޿ߡߎࠇࠄߩ㊂ࠍ᷹ቯߒߚ‫⏛ޕ‬ൻ₸ߩᄌൻ߇ⓨሹ₸ 98%ߩߣ߈ߣᲧߴ
ߡᭂ┵ߦዊߐ޿ߎߣ߿‫ޔ‬๟ᵄᢙࠪࡈ࠻ߒߥ޿ᚑಽ

Magnetization (a.u.)࡞ਛߩ 3He ߢߪ‫⿥ޔ‬ᵹേォ⒖᷷ᐲ TC ߩૐਅ߿‫ޔ‬197.5%
TC=1.27mK

0.8

0.6

98%
TC=1.89mK00.5߇޽ࠆߎߣ߆ࠄ‫ోޔ‬૕ߩඨಽ⒟ᐲߩ 3He ߪᦨૐ᷷ߢ߽⿥ᵹേߦߥߞߡ޿ߥ޿ߣ⠨߃ࠄࠇࠆ‫ޕ‬

48

1
T/TC
࿑㧞 ⏛ൻ₸ߩᄌൻ

1.5

2ᐢᏪၞ⿥㖸ᵄ࠻࡜ࡦࠬ࠺ࡘ࡯ࠨ࡯ߩ㐿⊒ⷺ↰ᥓᐘ a,ᚭ↰੫ ab,㊄ᧄ⌀⍮ a,የ਄ࠊ߆ᄹ a,↰ਛ૓テ a,૒‫ ⼾ᧁޘ‬ab
a ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇ࡮ቝቮ‛ℂቇኾ᡹ ૐ᷷‛ℂቇ⎇ⓥቶ

b ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦kakuda@scphys.kyoto-u.ac.jp

 ࿕૕ 3He ߩ U2D2 ⋧ߦ߅޿ߡ‫ޔ‬150MHz ⒟ᐲߩࠛࡀ࡞ࠡ࡯ࠍᜬߟߣ
ផ᷹ߐࠇߡ޿ࠆశቇࡑࠣࡁࡦߪᧂߛߦᬌ಴ߐࠇߡ޿ߥ޿‫ޔߒ߆ߒޕ‬ห⒟ᐲߩࠛࡀ࡞ࠡ࡯ࠍ
ᜬߟࡈࠜࡁࡦߣߩᢔੂㆊ⒟߇᦭ᗧߦሽ࿷ߔࠇ߫ࡈࠜࡁࡦߩᷫ⴮₸ߩ๟ᵄᢙᄌൻࠍㅪ⛯⊛ߦ᷹ቯߔࠆߎߣߢߘߩᬌ಴߇น⢻ߦߥࠆߣ⠨߃ߡ޿ࠆ‫ޕ‬᷹ቯߩὑߩ⿥㖸ᵄ࠻࡜ࡦࠬ࠺ࡘ࡯ࠨ
࡯ߦߪࠝࡈ࡟࠱࠽ࡦࠬߥ㗔ၞߢ߽૶↪ߢ߈ࠆ㜞ಽሶ࿶㔚⚛ሶߩࡐ࡝ࡈ࠶ൻࡆ࠾࡝࠺ࡦ
(PVDF)ߩ⭯⤑ࠍ↪޿ߚ‫ ߪࡓ࡞ࠖࡈߩߎޕ‬Al ࠍ 㕙ߦ⫳⌕ߒ‫⴫ޔ‬㕙ࠍ⎇⏴ߒߚ㊄ዻ⵾㔚ᭂߦ⾍ࠅઃߌߚ‫ޕ‬㔚ᭂ㑆ߩࠬࡍ࡯ࠨ࡯ߦߪᐔⴕᐲߩ㜞޿࠮࡜ࡒ࠶ࠢ᧼ࠍ↪޿ߚ‫࠺ࠬࡦ࡜࠻ޕ‬ࡘ࡯ࠨ࡯ߩ⹜㛎ߪᏱ᷷Ᏹ࿶ࡔ࠲ࡁ࡯࡞ߣ 77K 3 ᳇࿶ᶧ૕⓸⚛ᇦ⾰ߦ߅޿ߡࡄ࡞ࠬࠛࠦ࡯ᴺ
ߢⴕߞߚ‫ޕ‬ቶ᷷ߢߪ 40-130MHz
ߦ߅޿ߡᷫ⴮₸߇๟ᵄᢙߩ 2 ਸ਼ߦᲧ଀ߔࠆଐሽᕈࠍㅪ⛯⊛ߦ⏕߆߼ߚ‫ޕ‬ᶧ૕⓸⚛᷷ᐲߢ߽ห᭽
ߦ‫ޔ‬20-200MHz ߹ߢߩ㖸ᵄߩାภ߇ᬌ಴ߢ߈ߚ‫ޕ‬PVDF ߩ࿶㔚․ᕈߪᶧ૕⓸⚛᷷ᐲએਅߢ߶߷
ᄌൻߒߥ޿ߩߢ‫⿥ޔ‬ૐ᷷ᐲߢߩ
࿑ 1:10MHz pulse echo in LN2 ࿑ 2:sound attenuation in᷹ቯߦ߽૶↪น⢻ߢ޽ࠆߣᕁࠊ
methanol and LN2
ࠇࠆ‫ޕ‬

2The First N-type EDO-TTF and MeSEDO-TTF Complexes㇕ ะ㌵ a,b,c, ⍹Ꮉ ቇ c,ਛ㊁ ⟵᣿ c, ⍫ᜬ ⑲⿠ ca ⯗Ꮊᄢቇ

ൻቇൻᎿቇ㒮b ੩ㇺᄢቇ

‛⾰㧙⚦⢩⛔วࠪࠬ࠹ࡓ᜚ὐ

㨏੩ㇺᄢቇ ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦yamochi@kuchem.kyoto-u.ac.jp
O(EDO-TTF)2PF6 is known for the multi-instability ofmetallic state as well as for the ultra-fast and highly efficientphoto-induced phase transition. The chemical modifications arecarried out to find further functional materials.
The first N-type complexes based on the title donor

S

S

R

S
S
O
R = H: EDO-TTF
R = SMe: MeSEDO-TTF

RF

molecules, (EDO-TTF)2Ax and (MeSEDO-TTF)2Ay [A =Cu(NCS)2, x | 0.75, y | 0.60] were obtained, in the
conducting layer of which the face-to-face donor dimers
wereorthogonally

packed(Fig.).

D

Althoughthe (Fig.) Donor packing pattern in(EDO-TTF)2[Cu(NCS)2]a0.75.
conductivities were almost temperature independent ataround room temperature, the temperature dependences of magnetic susceptibilities
exhibited round maxima which are typical for antiferromagnetically coupled lowdimensional localized spin systems. The possible electronic structures will be discussed.

49

2ࡈ࡜࡯࡟ࡦੑᰴరዉ૕ߩ㔚ሶ᭴ㅧᄢႦ ᤩᒄ a, Dmitry V. Konarevb, Salavat S. Khasanovc,೨㉿ శᒾ d, Rimma N. Lyubovskayab, ⍫ᜬ ⑲⿠ a, 㥲⮮ ァᴦ e,a ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯,b ࡠࠪࠕ⑼ቇࠕࠞ࠺ࡒ࡯

ൻቇ‛ℂ⎇ⓥᚲ, c ࡠࠪࠕ⑼ቇࠕࠞ࠺ࡒ࡯

࿕૕‛ℂ⎇ⓥᚲ, d ੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ൻቇኾ᡹, e ฬၔᄢቇ ✚ว⎇ⓥᚲ
E-mail㧦otsuka@kuchem.kyoto-u.ac.jp ቅ┙ߒߚਛᕈ C60 ಽሶߢߪਃߟߩ LUMO ߇❗ㅌߒߡ޿ࠆ߇‫ࡦࠝࠗޔ‬ൻߦ઻߁ࡗ࡯ࡦ࡮
࠹࡜࡯ᱡߦࠃࠅ‫ߪߚ߹ޔ‬࿕૕ਛߦขࠅㄟ߹ࠇߡૐኻ⒓ൻߔࠆߎߣߦࠃࠅ‫゠ޔ‬㆏ߩਃ㊀❗ㅌߪ⸃ᶖߐࠇࠆߣ৻⥸ߦߪ⸒ࠊࠇࠆ‫ޕ‬MDABCOC60xTPC ߣ޿߁ C60 ߩ৻ଔࠕ࠾ࠝࡦ࡜ࠫ
ࠞ࡞߇ੑᰴర㕙ౝߢਃⷺᩰሶ⁁ߦ㈩೉ߒߚ⚿᥏᭴ㅧࠍᜬߟ‛⾰ߩ․ᕈࠍ⺞ߴߡ޿ࠆ‫ޕ‬ታ㓙ߩ⚿᥏᭴ㅧߦၮߠߊඨ⚻㛎⊛ MO ⸘▚㧔AM1㧕ߦࠃࠆߣ‫ޔ‬ਃߟߩ LUMO ߩಽⵚ᏷ߪ 0.05
eV ᧂḩߣ⹏ଔߐࠇ‫ޔ‬ᒝ⚿วㄭૃߦࠃࠆࠛࡀ࡞ࠡ࡯ࡃࡦ࠼᏷ࠃࠅ߽ዊߐߊ‫ޔ‬1/6 filled ߩ㊄ዻ⊛ੑᰴరવዉࡃ
ࡦ࠼߇ᒻᚑߐࠇߡ

1޿ࠆߣᚒ‫㉼⸃ߪޘ‬

6\

1

6[

ߒߡ޿ࠆ‫ޕ‬TPC

6[\MDABCO+62% ߣ /&#$%1 ߩ᭴ㅧ㕙ౝߩਃ⒳㘃ߩ⋧੕૞↪

2 &/'&1'$&6 2( ߦ߅ߌࠆ㔚⩄ߩਇဋൻ
ਛ㊁ ⟵᣿ a, ᫪Ꮉ ᔀ b, ⊕ᣛ ፏ b, ችᧄ ਭ৻ b, ᓮፒ ᵗੑ b,ᄁᏒ ᐙᄢ c, ⮯Ꮷ ਭᒫ c, ⍫ᜬ ⑲⿠ aa੩ㇺᄢቇ ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯bᗲᇫᄢቇᄢቇ㒮 ℂᎿቇ⎇ⓥ⑼c

ಽሶ⑼ቇ⎇ⓥᚲ

Intensity / arb. unit

E-mail㧦nakano@kuchem.kyoto-u.ac.jp(DMEDO-EBDT)2PF6 (1) ߪ‫ޔ‬185 K ߢ㊄ዻ㧙⛘✼૕ォ⒖ࠍ⿠ߎߔ‫ޕ‬಄ළߦ઻޿‫⚿ޔ‬᥏ቇ⊛ߦ⁛┙ߥ࠼࠽࡯ಽሶߩᢙߪ‫ޔ‬1 ಽሶ(300 K)‫ޔ‬2 ಽሶ
CH3
S
O
S
(200 K)‫ޔ‬4 ಽሶ(150 K)ߣᄌൻߔࠆ[1]‫ޔߜࠊߥߔޕ‬᭴
Sㅧ⸃ᨆߢߪ 300 K ߦ߅޿ߡోߡߩ DMEDO-EBDT ಽ
CH3SOሶߪဋ৻ߥ㔚⩄ࠍ᦭ߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ‫੹ޕ‬࿁ߪ‫ޔ‬DMEDO-EBDT⋧ォ⒖ᯏ᭴ࠍ⸃᣿ߔࠆߎߣࠍ⋡⊛ߣߒߡ‫ޔ‬ᝄേࠬࡍ
15ࠢ࠻࡞ࠍ᷹ቯߒߚߩߢႎ๔ߔࠆ‫ޕ‬
Fig. 1 ߦቶ᷷ߢ᷹ቯߒߚ 1 ߩ࡜ࡑࡦࠬࡍࠢ࠻࡞ࠍ␜
27 28
ߔ‫ޕ‬C=C િ❗ᝄേߢ޽ࠆ Ȟ13‫ޔ‬Ȟ15 ࡕ࡯࠼ߣ CíH 㕙ౝ13ᄌⷺᝄേߢ޽ࠆ Ȟ27‫ޔ‬Ȟ28 ࡕ࡯࠼߇᷹ⷰߐࠇߚ‫ޔߚ߹ޕ‬ฦࡕ࡯࠼ߩᝄേᢙߪ‫ޔ‬+1 ଔߩ DMEDO-EBDT ಽሶߩ
1100 1200 1300 1400 1500 1600 1700
ᝄേᢙߦㄭ޿ߎߣ߇ಽ߆ߞߚ‫ޔߪߣߎߩߎޕ‬᭴ㅧ⸃
Raman shift / cm-1
ᨆߩ⚿ᨐߣ⇣ߥࠅ‫ޔ‬ቶ᷷ߦ߅޿ߡߔߢߦ㔚⩄ߩਇဋ
Fig. 1 Raman spectrum of 1 excitedൻ߇⿠߈ߡ޿ࠆߎߣࠍ␜ໂߒߡ޿ࠆ‫ޕ‬ᒰᣣߪ‫ࡍࠬޔ‬by a 568 nm laser at room
temperature. The numbering jࠢ࠻࡞ߩ᷷ᐲᄌൻߦߟ޿ߡ߽⼏⺰ߔࠆ‫ޕ‬
denotes the Ȟj mode.
[1] ⊕ᣛࠄ, ╙ 3 ࿁ಽሶ⑼ቇ⸛⺰ળ 3C07 (2009)50

2'&166( ࡕࡁࠢࡠࡠ⺃ዉ૕ߩวᚑ‫ޔ‬᭴ㅧ߅ࠃ߮‛ᕈ⍹Ꮉ ቇ a, ਛ㊁ ⟵᣿ a, ⍫ᜬ ⑲⿠ aa ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦m-ishikawa@kuchem.kyoto-u.ac.jp⪺⠪ࠄߪ⿥㜞ㅦ䊶㜞ല₸శ⺃⿠⋧ォ⒖╬䇮․⇣䈭⋧ォ⒖䉕
␜ߔ(EDO-TTF)2PF6 [1]ࠍਈ߃ࠆ EDO-TTF ߦኻߔࠆ⟎឵ၮ

O

S

S

O

S

S

R

ߩ㔚ሶ⊛‫┙ޔ‬૕⊛ലᨐߦߟ޿ߡᬌ⸛ߒߡ޿ࠆ‫੹ޕ‬࿁ߪ‫ ߘޔ‬R = H: EDO-TTF
R = CO2CH3: EDO-TTF-CO2CH3

ߩࡆ࠾࡞૏ߦႮ⚛ේሶࠍ  ߟዉ౉ߒߚ CLEDO-TTF ࠍᣂ R = Cl: CLEDO-TTFⷙ ߦ ว ᚑ ߒ ߚ ‫ ޕ‬CLEDO-TTF ߪ EDO-TTF-CO2CH3 ߩ
Cl3C-CF3 ߦࠃࠆႮ⚛ൻ(෼₸~86%)ߣ‫ߊ⛯ߦࠇߘޔ‬⣕὇㉄(෼₸>90%)ࠍ⚻ߡ‫ޔ‬ታ↪⊛ߥ෼₸ߢᓧࠄࠇߚ‫ޕ‬CLEDO-TTF ṁᶧࠍ PF6 㧙 ߩ ౒ ሽ ਅ ߢ 㔚 ⸃ ㉄ ൻ ߔ ࠆ ߎ ߣ ߦ ࠃ ࠅ ‫( ޔ‬CLEDO-

TTF)2PF6 ߩන⚿᥏ࠍ૞⵾ߒߚ‫ޕ‬න⚿᥏ X ✢᭴ㅧ⸃ᨆߩ⚿ᨐ‫ ޔ‬࿑ 1 (CLEDO-TTF)2PF6 ߦ߅
CLEDO-TTF ߪ‫ޔ‬head-to-tail ဳߩࠞ࡜ࡓ᭴ㅧࠍᒻᚑߒ(࿑ߌࠆ࠼࠽࡯ಽሶ㈩೉

1)‫ࡓ࡜ࠞޔ‬ᣇะߦᒙ޿㧞㊂ൻ߇⷗ࠄࠇߚ‫⃻ޕ‬࿷‫ޔ‬Ყᛶ᛫ߩ᷷ᐲଐሽᕈߩ᷹ቯ߿‫⸘࠼ࡦࡃޔ‬▚╬ߦࠃࠆℂ⺰⊛⸃ᨆࠍⴕߞߡ޿ࠆ‫ޔߚ߹ޕ‬ห⚵ᚑߩ AsF6 Ⴎ߿ SbF6 Ⴎ߽ᓧࠄࠇߡ߅ࠅ‫ޔ‬ᒰᣣߪ‫ߩࠄࠇߎޔ‬วᚑᴺ‫⚿ޔ‬᥏᭴ㅧ‫‛ޔ‬ᕈߩ⹦⚦ߦߟ޿ߡႎ๔ߔࠆ੍ቯߢ޽ࠆ‫ޕ‬[1] H. Yamochi and S. Koshihara, Sci. Technol. Adv. Mater., 10, 024305 (2009)2ᷙ᥏= '&166( Z /G'&166( Z?2( Z  ߩ⋧ォ⒖᜼േᐔ᧻ ቁ┨ a,b, ᧛↰ ೰ᔒ㨏,㇕ ะ㌵ a,b, ਛ㊁ ⟵᣿ a, ⍫ᜬ ⑲⿠ a, ⾬Ꮢ ᐙᄢ d, ⮯Ꮷ ਭᒫ d, ↰ਛ ⠹৻㇢ ba ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯, b ੩ㇺᄢቇ ‛⾰⚦⢩⛔วࠪࠬ࠹ࡓ᜚ὐ, 㨏ᄢ㒋ᄢቇ ℂቇ⎇ⓥ⑼, d ಽሶ⑼ቇ⎇ⓥᚲ
E-mail㧦hiramatsu@kuchem.kyoto-u.ac.jp
 (EDO-TTF)2PF6 ߪ⚂ 280 K ߢࡄࠗࠛ࡞ࠬォ⒖‫ޔ‬㒶ࠗࠝࡦߩ⒎ᐨ̆

2

ή⒎ᐨ(AO)ォ⒖‫ޔ‬㔚⩄⒎ᐨൻ(CO)ォ⒖ߩᯏ᭴߇දหߒߚ․⇣ߥ㊄ዻ̆⛘✼૕ォ⒖(M-I ォ⒖)ࠍ⿠ߎߔ‫ ߦࠇߎޕ‬MeEDO-TTF ࠍዋ㊂ዉ౉ߒߚᮡ㗴ᷙ᥏ߢߪ‫ޔ‬ᷙวᲧ x = 0.05 ߹ߢߪ x = 0 ߣห᭽ߩᯏ᭴ߢォ

;

6

6

;

6
6
+  ('277)0H  0H('277)

2⒖߇⿠߈ࠆ߇‫ޔ‬x = 0.13 ߢߪ CO ォ⒖ߩ᭽⋧߇ᶖᄬߒߡ޿ߚ‫ ࠄ߆ߣߎߩߎޕ‬MeEDO-TTF
ߩዉ౉ߦࠃࠅᄙ㊀ਇ቟ቯᕈߩ߁ߜ CO ォ⒖ࠍㆬᛯ⊛ߦᛥ೙ߢ߈ࠆߎߣ߇᣿ࠄ߆ߦߥߞߚ[1]‫ޕ‬ ᧄ⎇ⓥߢߪ‫ ߦࠄߐޔ‬CO ォ⒖߇ᶖᄬߔࠆߏߊㄭறߩ㍲૕ߦ߅ߌࠆ M-I ォ⒖ߩ᜼േߩ♖ᩏࠍ⋡⊛ߣߒߡ x = 0.06㨪0.12 ߩᷙ᥏ߩᬌ⸛ࠍⴕߞߚ‫ޕ‬᷷ᐲนᄌ X ✢᭴ㅧ⸃ᨆߩ⚿ᨐ߆ࠄ‫ޔ‬x = 0.09 ㄭறߢᯏ᭴ߩදหᕈ߇ૐਅߒ‫ޔ‬಄ළߦ઻޿ AO ォ⒖ࠍ઻߁ࡄࠗࠛ࡞ࠬォ⒖߇⿠߈
ߚᓟߦᦝߦૐ᷷ߢ CO ォ⒖߇⿠߈ߚߣ⠨߃ࠄࠇࠆ᭴ㅧᄌൻ߇⷗ࠄࠇߚ‫ࠅࠃࠇߎߦࠄߐޕ‬ᄢ߈ߥ x ߢߪ x

0.13 ߣห᭽ߦ CO ォ⒖ߩ᭽⋧ߪ⷗ࠄࠇߥ߆ߞߚ‫ޕ‬ᒰᣣߪߎࠇߦട߃ߡ࡜ࡑ

ࡦࠬࡍࠢ࠻࡞ߩ᷷ᐲᄌൻߦ㑐ߔࠆ⚿ᨐ߽วࠊߖߡ M-I ォ⒖ߩ⹦⚦ߦߟ޿ߡ⼏⺰ߒߚ޿‫ޕ‬[1] T. Murata et al., Physica B, (2010) in press (doi:10.1016/j.physb.2009.12.042).

51

262'&66 ࠍ࠼࠽࡯ߣߔࠆ㓁ࠗࠝࡦ࡜ࠫࠞ࡞Ⴎߩวᚑ
߅ࠃ߮ߘߩ᭴ㅧ‫‛ޔ‬ᕈߦ㑐ߔࠆ⎇ⓥ⷏ 㛁᣿ a, b , ਛ㊁ ⟵᣿ b , ᄁᏒ ᐙᄢ c , ⮎Ꮷ ਭᒫ c , ⍫ᜬ ⑲⿠ba੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ൻቇኾ᡹ಽሶᕈ᧚ᢱ㐿ᜏ࡮⸃ᨆ⎇ⓥಽ㊁b੩ㇺᄢቇ ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯c

ಽሶ⑼ቇ⎇ⓥᚲ

E-mail㧦nishi@kuchem.kyoto-u.ac.jp
TPDT ߪ TTF 䈫 BTP ߩ䊊䉟䊑䊥䉾䊄䊄䊅䊷䈪䈅ࠅ‫ࡦ࡜ࡇࠝ࠴ޔ‬Ⅳߩ⎫㤛ߦࠃࠅಽሶ⍴ゲᣇะ߿ಽሶ㕙ߦု⋥ߥᣇะߩߺߥࠄߕ‫ޔ‬ಽሶ㐳ゲᣇะߦ߽᦭ലߥಽሶ㑆⋧੕૞↪߇ᦼᓙߢ߈ࠆ‫ޕ‬ታ㓙‫ޔ‬ᣢႎ䈱㉄⚛㘃✼૕ TP-EDOT 䈲䇮ᧃ┵䈱⎫㤛ේሶ䈮䉋䉎ಽሶ㐳ゲᣇะ䈻䈱ಽሶ㑆⋧੕૞↪䈏⷗䉌䉏䉎㍲૕䉕ਈ䈋䈢[1]䇯ᧄ⎇ⓥ䈪䈲䇮ಽሶ⍴ゲᣇะ䈱ಽሶ㑆ធ⸅䈱Ⴧᄢࠍ⋡ᜰߒߡ䇮TP-EDOT 䈱㉄⚛䉕⎫㤛ߦ⟎឵ߒߚ TP-EDTT ࠍ↪޿ߡ‫ޔ‬⒳‫ߩޘ‬㓁ࠗࠝࡦ࡜ࠫࠞ࡞Ⴎࠍวᚑ
ߒ‫ޔ‬᭴ㅧ߅ࠃ߮‛ᕈߩᬌ⸛ࠍⴕߞߚ‫ޕ‬(TP-EDTT)2SbF6 ਛߢ࠼࠽࡯ಽሶߪ Head-to-Tail ဳߢੑ㊂ൻߒ‫ߎޔ‬
ߩੑ㊂૕߇Ⓧጀ䉦䊤䊛ࠍᒻᚑߒߡ޿ߚ‫ޕ‬ዉ㔚᜼േߪඨዉ૕⊛ߢ޽ߞߚ߇‫ߪࠄ߆࡞࠻ࠢࡍࠬࡦࡑ࡜ޔ‬㔚⩄ಽ㔌ߪ↢ߓߡ޿ߥ޿ߣ⸃㉼ߐࠇ

6

6
;
;

;

6
;
6  73('772  73('27ߚ‫ᧄޔߡߞ߇ߚߒޕ‬㍲૕ߪ࠳ࠗࡑ࡯ࡕ࠶࠻⛘✼૕ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ޔߚ߹ޕ‬PF6‫ޔ‬AsF6ࠍኻᚑಽߣߔࠆ㍲૕߽ᓧࠄࠇߡ߅ࠅ‫ޔ‬ᒰᣣߪઁߩ㍲૕ߦߟ޿ߡ߽⼏⺰ߔࠆ‫ޕ‬[1] H. Yamochi et al., J.Mater. Chem., 16, 550 (2006)

2㐳㎮ᄙଔਇ㘻๺⢽⢌㉄ߩ᛫߇ࠎ૞↪ߩ⎇ⓥ૒⮮㩷 ᥓ 㪸㪃㩷 ૒⮮㩷 ⠍ 㪹㪃㩷 Ꮉᧄ㩷 ⚐ 㪹㪃㩷 ᩙේ㆐ᄦ 㪹㩷㪸੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ䉶䊮䉺䊷㩷 ቇ㓙ૐ᷷ᔕ↪ಽ㊁㩷㪹੩ㇺᄢቇൻቇ⎇ⓥᚲ㩷 ಽሶᓸ↢‛⑼ቇ㗔ၞ㩷

E-mail㧦sbsato@ltm.kyoto-u.ac.jp
 ⢽⢌㉄䈲↢૕⤑䈱ၮᧄ᭴ㅧ䈪䈅䉎䊥䊮⢽⾰ੑ㊀ጀ䈱ਇนᰳ䈭ᚑಽ䈪䈅䉎䇯䊥䊮⢽⾰䈲⋥㎮⢽⢌㉄䉕䈠䈭䈋㩷 㩿ਅ࿑䈲䋱଀㪀䇮䈖䉏䉌䈲৻⥸䈮὇⚛ᢙ 㪈㪍䌾㪈㪏 䈪ੑ㊀⚿ว䈏䈭䈇䈎䇮䈅䈦䈩䉅䈞䈇䈟䈇 㪈䌾㪉 ୘䈱䉂䈪䈅䉎䇯䈚䈎䈚↢๮䈮䈫䈦䈩䈲䇮὇⚛ᢙ 㪉㪇䌾㪉㪉 䈪ੑ㊀⚿วᢙ 㪋䌾㪍 䈱㐳㎮ᄙଔਇ㘻๺⢽⢌㉄䉅ᔅ㗇䈪䈅䉍䇮೙䈏䉖૞↪䇮Ἳ∝䈱✭๺䇮䉝䊧䊦䉩䊷䈱ᛥ೙䇮䈘䉌䈮⣖␹⚻♽䈱ᒻᚑ䉇⸥ᙘ଻ᜬ૞↪䈭䈬䈫䈱㑐ㅪ䈏ᵈ⋡䈘䉏䈩䈇䉎䇯․䈮䊄䉮䉰䊓䉨䉰䉣䊮㉄㩿㪛㪟㪘㩷 ࿑ਛਅㇱ㪀䈲䇮
‛ℂ⊛䍃ൻቇ⊛䈮䊡䊆䊷䉪䈭․ᓽ䉕䈠䈭䈋䈩䈇䉎䇯䈚䈎䈚䈠䈱↢‛ᵴᕈ䈫䈱㑐ଥ䈲⻘䈪䈅䉎䇯㩷ᚒ䇱䈲䇮ૐ᷷䉕↪䈇䈩 㪛㪟㪘 䉇䈠䈱ઁ䈱⢽⢌㉄䈱⺃ዉ૕䉕቟ቯ䈮⺞⵾䈚䇮䈠䈱⊒ើ䈜䉎ᯏ⢻䉕ಽሶ⑼ቇ⊛䈮⸃᣿䈜䉎⹜䉂䉕㐿ᆎ䈚䈢䇯䈏䉖䈲䇮⚦⢩䈱ㆮવሶ䈏ᄌ⇣䈜䉎䈫䈫䉅䈮䇮⢽⾰㑐ㅪ䈱⺞▵䈱⇣Ᏹൻ䉕䈫䉅䈭䈦䈩䇮⚵❱䈎䉌㔌⣕䍃Ⴧᱺ䈜䉎䈖䈫䈪ᖡᕈൻ䈜䉎䇯ᧄᐕ䈲 㪛㪟㪘 䉕䈲䈛䉄䈫䈜䉎㐳㎮ᄙଔਇ㘻๺⢽⢌㉄䈱ᄢ⣺䈏䉖䈮ኻ䈜䉎೙䈏䉖૞↪䉕ᬌ⸽䈚䇮䈏䉖Ვ்૞↪䈮ᔅⷐ䈭᭴ㅧ․ᓽ䇮⊒䈏䉖䈱㊀ⷐ࿃ሶ䈪䈅䉎ᵴᕈ㉄⚛䈫䈱㑐ଥ䈭䈬䉕⎇ⓥ䈚䈢䇯䈠䈱⚿ᨐ䉕⚫੺䈚䈢䈇䇯㩷

52

2

Large enhancement of superconductivity in Sr2RuO4 by uniaxialpressure⼱ญ ᥍㚅 a, ᯌ㜞 ବ৻㇢ a, ☨Ỉ ㅴ๋ a, ⍫ญ ብ b, ೨㊁ ᖝノ aa ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ᧲੩ℂ⑼ᄢቇ

ℂᎿቇㇱ ‛ℂቇ⑼E-mail㧦taniguchi@scphys.kyoto-u.ac.jp
 ࠬࡇࡦ  ㊀㗄⿥વዉ૕ 5T4W1 ߩ⿥વዉォ⒖᷷ᐲ 6E ߦߟ޿ߡߪ‫ޔ‬Ᏹ࿶ਅߢ - ߢ޽ࠆߎߣ߿㕒᳓࿶ਅߢᛥ೙ߐ
ࠇࠆߎߣߪ⍮ࠄࠇߡ޿ࠆ߇‫৻ޔ‬ゲᕈ࿶ജലᨐߪ᣿ࠄ߆ߦ
ߐࠇߡ޿ߥ߆ߞߚ‫⎇ᧄޕ‬ⓥߢᚒ‫) ߆ߕࠊߪޘ‬2C ߩ E
ゲᣇะ৻ゲᕈ࿶ജਅߢ 5T4W1 ߩࠝࡦ࠮࠶࠻ 6E ߇ᕆỗߦ- ߦ߹ߢ਄᣹ߔࠆߎߣࠍ᣿ࠄ߆ߦߒߚ‫ߎߪߢ⴫⊒ᧄޕ‬ࠇࠄߩ⚿ᨐࠍ⚫੺ߒ‫ޔ‬6E ਄᣹ߩ⿠Ḯߦߟ޿ߡ⼏⺰ߔࠆ‫ޕ‬

Fig.: Temperature dependence of AC magnetic susceptibility in
Sr2RuO4 under uniaxial pressure along the c axis.

2



#U0/4 ߢ⷗ࠆ㋕♽⿥વዉ૕ .C(G#U 1Z(Z ߦ߅ߌࠆࠬ࠻࡜ࠗࡊဳࠬࡇࡦ⋧㑐ߣ⿥વዉߩ㑐ଥർᎹବ૞ a,b,ਛ੗␭੺ a,b,ኅື਽ a,b,⍹↰ᙗੑ a,b,␹ේ㓁৻ b,ᐔ㊁ᱜᶈ c,d,⚦㊁⑲㓶 c,d,ea੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b

JST-TRIP䇮㩷 cERATO-SORSTd᧲੩Ꮏᬺᄢቇ 䊐䊨䊮䊁䉞䉝ഃㅧ౒ห⎇ⓥ䉶䊮䉺䊷e᧲੩Ꮏᬺᄢቇ ᔕ↪䉶䊤䊚䉾䉪䉴⎇ⓥᚲ

E-mail䋺shunsaku@scphys.kyoto-u.ac.jp
LaFeAs(O1-xFx)䈲 2008 ᐕ䈮ႎ๔䈘䉏䈢⿥વዉ૕䈪䈅䉍䇮x = 0.11 䈪䈖䈱♽䈪ᦨ㜞䈱⿥વዉォ⒖
᷷ᐲ Tc = 26K 䉕␜䈜䇯䈖䈱㋕♽⿥વዉ૕䈲 Tc 䈏㜞䈇䈖䈫䉇⏛ᕈర⚛䈪䈅䉎 Fe 䈏⿥વዉ䈮㊀ⷐ
䈪䈅䉎䈖䈫䈎䉌⃻࿷ᄙ䈒䈱ᵈ⋡䉕㓸䉄䈩䈇䉎‛⾰䈪䈅䉎䇯ᚒ䇱䈲 As ᩭ䈱ᩭ⏛᳇౒㡆(NMR)䉕↪䈇䈩⿥વዉ䈫⏛ᕈ䈱㑐ଥ䉕ᓸⷞ⊛䈮⺞䈼䈩䈇䉎䇯ᩭ䉴䊏䊮-ᩰሶ✭๺₸ 1/T1 䈱᷷ᐲଐሽᕈ䈲 F 䊄䊷䊒䈮䉋䈦䈩ᄢ䈐䈒ᄌൻ䈜䉎䈏䇮x = 0.11 એਅ䈪䈱Ᏹવዉ⁁ᘒ䈱 1/T1 䈱⇣ᣇᕈ䈲(1/T1)ab/(1/T1)c ~ 1.5 䈫䈾䈿৻ቯ୯䉕䈫䉎䇯䈖䉏䈲ਛᕈሶ㕖ᒢᕈᢔੂ䈱⚿ᨐ䈎䉌␜ໂ䈘䉏䉎䉴䊃䊤䉟䊒ဳ䈱 Fe 䉴䊏䊮⋧㑐䈱ሽ࿷䈪ℂ⸃น⢻䈪䈅䉎䇯䊘䉴䉺䊷䈪䈲 1/T1 䈱⇣ᣇᕈ䈱 F 䊄䊷䊒ଐሽᕈ䈎䉌⿥વዉ䈫䉴䊃䊤䉟䊒ဳ䉴䊏䊮⋧㑐䈱㑐ଥ䈮䈧䈇䈩⊒⴫ߔࠆ੍ቯߢ޽ࠆ䇯

53

2

NMR study on iron pnictide superconductors
LaFeAs(O, F) and BaFe2(As, P)2

ਛ੗␭੺ a, b, ർᎹବ૞ a, b, ኅື਽ a, b, ⍹↰ᙗੑ a, b, ═ේᚑ c,⦼ౝቁ⑓ a,᧻↰␭ม a, ኹ᎑ቁੳ c, ␹ේ㓁৻ b, ᐔ㊁ᱜᶈ d, e,⚦㊁⑲㓶 d, e, fa ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b JST-TRIP, c ੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯, dJST ERATO-SORST,e ᧲Ꮏᄢࡈࡠࡦ࠹ࠖࠕ⎇ⓥ࠮ࡦ࠲࡯, f ᧲Ꮏᄢᔕ↪࠮࡜ࡒ࠶ࠢࠬ⎇ⓥᚲ,E-mail㧦nakai@scphys.kyoto-u.ac.jp
 2008 ᐕߦ⊒⷗ߐࠇߚ㋕♽⿥વዉ૕ߪ, ㌃㉄ൻ‛⿥વዉ૕ߦᰴߋ㜞޿⿥વዉォ⒖᷷ᐲ Tc(ᦨᄢߢ 55 K ⒟ᐲ)ࠍ␜ߔߎߣ߆ࠄ, ਎⇇⊛ߦᵴ⊒ߥ⎇ⓥ߇ⴕࠊࠇߡ޿ࠆ. ㌃㉄ൻ‛⿥વዉ૕ߣห᭽ߦ, ㋕♽⿥વዉ૕ߢ߽⏛ᕈ⋧ߣ⿥વዉ⋧߇㓞ធߒߡሽ࿷ߒߡ޿ࠆߎߣ߆ࠄ, ㋕♽⿥વዉߩ⊒⃻ᯏ᭴ߩ᦭ജߥ୥⵬ߣߒߡ⏛᳇ബ⿠߇᜼ߍࠄࠇߡ޿ࠆ. ᚒ‫ߪޘ‬, ߎࠇ߹ߢߦ
1111 ♽ߣࠃ߫ࠇࠆ⚿᥏᭴ㅧࠍ߽ߟ LaFeAs(O,F)ߣ, 122 ♽ߣ๭߫ࠇࠆ BaFe2(As,P)2 ߦᵈ⋡ߒߡ, Ᏹવዉ⁁ᘒߩ⏛᳇ബ⿠߿⿥વዉࠡࡖ࠶ࡊߩᕈ⾰ࠍᩭ⏛᳇౒㡆ᴺ(NMR)ࠍ↪޿ߡ⎇ⓥࠍⴕߞߡ߈ߚ. NMR ߪේሶᩭࠬࡇࡦࠍࡊࡠ࡯ࡉߣߒߡ, 㔚ሶࠬࡇࡦߩ⁁ᘒࠍ⺞ߴࠆߎߣ߇
ߢ߈ࠆߚ߼, ⏛᳇ബ⿠߿⿥વዉߩᕈ⾰ࠍ⺞ߴࠆߚ߼ߩࠃ޿᷹ቯᚻᴺߢ޽ࠆߎߣ߇⍮ࠄࠇߡ
޿ࠆ. ᧄ⻠Ṷߢߪ, ߎࠇ߹ߢߦᚒ‫⎇ߩޘ‬ⓥߢ᣿ࠄ߆ߦߥߞߚ LaFeAs(O,F)ߣ BaFe2(As,P)2ߩ⏛᳇ബ⿠ߣ⿥વዉߩᕈ⾰ߦߟ޿ߡ⊒⴫ߔࠆ.

2㋕♽⿥વዉ૕ BaFe2(As1-xPx)2 ( 0 < x < 0.33 )ߩ 0/4 ߦࠃࠆ⎇ⓥ

ኅ ື਽ ab, ਛ੗ ␭੺ ab, ർᎹ ବ૞ ab ⍹↰ ᙗੑ ab,═ේ ᚑ c, ⦼ౝ ቁ⑓ a, ᧻↰ ␭ม a, ኹ᎑ ቁੳ c,a ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁

bJST-TRIPc ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦tiye@scphys.kyoto-u.ac.jp ᦨㄭ⊒⷗ߐࠇߚ㋕⎆⚛⿥વዉ૕ߢߪ‫ޔ‬㌃㉄ൻ‛㜞᷷⿥વዉ૕ߩ႐วߣห᭽ߦ⏛᳇⋧ㄭறߢ⿥વዉ߇಴⃻ߔࠆ‫⿥߼ߚߩߘޕ‬વዉߩ⊒⃻ᯏ᭴ߦኻߔࠆ⏛᳇⊛⋧੕૞↪ߩ㑐ଥᕈ߇ᜰ៰
ߐࠇ‫⏛ޔ‬ᕈߣ⿥વዉߩ㑐ଥߦ⥝๧߇㓸߹ߞߡ޿ࠆ‫ޕ‬㋕⎆⚛⿥વዉ૕ߩᲣ‛⾰ߢ޽ࠆ෻ᒝ⏛ᕈ૕ BaFe2As2 ߢߪ‫ޔ‬ട࿶߿ర⚛⟎឵ߦࠃࠅ⏛᳇⒎ᐨ࡮᭴ㅧ⋧ォ⒖߇ᛥ߃ࠄࠇ⿥વዉ߇಴⃻ߔࠆ‫ޕ‬ਛߢ߽ᚒ‫ޔߪޘ‬As ࠍ╬ଔᢙߩ P ߢ⟎឵ߔࠆߎߣߢ⿥
વዉࠍ␜ߔ BaFe2(As,P)2 ♽ߦᵈ⋡ߒ‫ޔ‬P ᩭߩᩭ⏛᳇౒㡆(NMR)ታ㛎߆ࠄ‫⏛ޔ‬᳇⋧ߩᕈ⾰‫ޔ‬Ᏹવዉ⁁ᘒߩ⏛᳇ബ⿠߿⿥વዉࠡࡖ࠶ࡊ᭴ㅧ‫⏛ߦࠄߐޔ‬ᕈߣ⿥વዉߩႺ⇇㗔ၞߦߟ޿ߡ⺞ߴߡ޿ࠆ‫ޕ‬[1] S. Kasahara et al., arXiv:0905.4427.

54

Fig.1 ⟎឵㊂ x ߦኻߔࠆBaFe2(As1-xPx)2 ߩ⋧࿑ [1]2

Superconductivity in charge-carrier doped SiC

M. Kriener,1 T. Muranaka,2 J. Kato,2 Z.A. Ren,2 J. Akimitsu,2 and Y. Maeno1
1

Department of Physics, Grad. School of Science, Kyoto University, Kyoto 606-8502, Japan
Dep. of Physics and Mathematics, Aoyama-Gakuin University, Kanagawa 229-8558, Japan
E-mail㧦mkriener@scphys.kyoto.u.ac.jp
Silicon Carbide (SiC) belongs to the diamond-based family of superconductors
originating from wide-gap semiconductors upon high charge carrier concentrations
either by boron (SiC:B) [1] or aluminium (SiC:Al) [2] doping. Surprisingly both dopants lead to asuperconducting transition temperature of about Tc = 1.5 K as indicated by sharp transitions inresistivity, DC, and AC susceptibility (Fig. 1 (a), (c)) [1]. Clear jump anomalies in respective
specific heat measurements indicate that the superconductivity inboth systems is a bulk feature (Fig. 1 (b), (d)) [3]. Note the verysmall absolute values of cp/T; high precision was required for themeasurements.
Another surprising feature is a distinctive in-field hysteresis in
resistivity and AC susceptibility measurements, a hallmark of type-I
superconductivity (Fig. 1(a)). Since this hysteresis is almost absent
in SiC:Al, it is unclear at the moment if the latter system is an
intrinsic type-I or type-II supercondutor. This presentation will givean overview of the superconductivity in SiC.
2[1] Z.-A. Ren et al., J. Phys. Soc. Jpn. 76 , 103710 (2007).
[2] T. Muranaka et al., unpublished.
[3] M. Kriener et al., Phys. Rev. B 78, 024517 (2008) andunpublished.


2ᒝ⏛ᕈ⿥વዉ૕ 7%Q)G ߦ߅ߌࠆᒝ⏛ᕈߣ⿥વዉߩᓸⷞ⊛౒ሽ᦯ㇱᵏ૓ a⍹↰ᙗੑ aਛ੗␭੺ a ੗ේᘮᒾ aየፒ⧷␭ D↰᧛ᥰਯ D಴ญ๺ᒾ D૒⮮ᙗᤘ D૒⮮દ૒ോ ca ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ฬฎደᄢቇℂቇ⎇ⓥ⑼‛⾰ℂቇኾ᡹‛ℂ♽ ,c ᧲ർᄢቇ㊄ዻ᧚ᢱ⎇ⓥᚲ

E-mail㧦t.hattori@scphys.kyoto-u.ac.jp ᒝ⏛ᕈ⿥વዉ૕ 7%Q)G ߪ‫ޔ‬Ᏹ࿶ߦ߅޿ߡ - ߢᒝ⏛ᕈォ⒖ߒߚᓟ‫ޔ‬- ߢ⿥વዉォ⒖ࠍ⿠ߎߒ‫ޔ‬ᒝ⏛ᕈߣ⿥વዉ߇౒ሽߒߡ޿ࠆߣ⠨߃ࠄࠇࠆᢙዋߥ޿଀ߢ޽ࠆ‫ޕ‬ᓥ᧪ߩ $%5ℂ⺰ߦᓥ߃߫ਔ⠪ߪ౒ሽߒ߃ߥ޿ߚ߼‫ޔ‬ㄭᐕ⥝๧߇ᜬߚࠇߡ޿ࠆ‫ޕ‬ᚒ‫ߥ⦟⚐ߪޘ‬න⚿᥏⹜
ᢱࠍ %Q0/4034 ᷹ቯߦࠃࠅ⺞ߴߡ޿ࠆ‫ ޔߦߢ߹ࠇߎޕ‬ᒝ⏛ᕈォ⒖᷷ᐲએਅߢౝㇱ⏛႐ࠍฃߌߚାภߩߺ߇಴ߡ߅ࠅ‫⹜ޔ‬ᢱో૕߇ᒝ⏛ᕈߦߥߞߡ޿ࠆߎߣ‫ ޔ‬ᒝ⏛ᕈォ⒖᷷ᐲએਅߢ⃻ࠇࠆᒝ⏛ᕈାภߩᩭࠬࡇࡦ́ᩰሶ✭๺₸ߦ⿥વዉߩ⇣Ᏹ߇⷗߃ߚߎߣ߆ࠄ‫ޔ‬ᒝ⏛ᕈߣ⿥વዉ߇̌ᓸⷞ⊛̍ߦ౒ሽߒߡ޿ࠆߎߣࠍ᣿ࠄ߆ߦߒߚ‫⹜ޔߚ߹ޕ‬ᢱో૕ߢ↢ߓࠆᒝ⏛
ᕈ⒎ᐨߦኻߒߡ⿥વዉ⁁ᘒߪⓨ㑆⊛ߦ㕖৻᭽ߢ޽ߞߚ‫ޔߪࠇߎޕ‬ᄖㇱ⏛႐߇ߥ޿⁁ᴫߢ߽⥄りߩᜬߟᒝ⏛ᕈ⒎ᐨߦ↱᧪ߒߡ⏛᧤߇↢߹ࠇࠆ‫⥄ޟ‬Ꮖ⺃ዉ᷵♻⁁ᘒ‫ࠆ޿ߡߓ↢߇ޠ‬น⢻ᕈࠍᜰ៰ߔࠆ‫⥄ߩߎޕ‬Ꮖ⺃ዉ᷵♻⁁ᘒߪℂ⺰⊛ߦߪߘߩሽ࿷߇੍⸒ߐࠇߡ޿ࠆ߽ߩߩ‫⏕ޔ‬ታߥታ㛎⊛⸽᜚ߪ߹ߛߥ޿‫⚿ߩࠄࠇߎޕ‬ᨐߦߟ޿ߡ⚫੺ߔࠆ‫ޕ‬

55

2

Superconducting properties of noncentrosymmetric
5d-electron system Ca0Si3 (0=Ir, Pt) and Li2(Pd1-xPtx)3B㩷

Gaku Eguchia, Darren C. Peetsa, Markus Krienera, Sachiko Makib, Eiji Nisshiborib, Hiroshi
Sawab, Shota Haradac, Sk. Md. Shamsuzzamanc, Yoshihiko Inadac, G. -q. Zhengc, Yoshiteru
MaenoaaDepartment of Physics, Graduate School of Kyoto University, bDepartement of Physics,
Department of Applied Physics, Nagoya University, cGraduate School of natural Science andTechnology, Okayama University
E-mail㧦geguchi@scphys.kyoto-u.ac.jp

When a superconductor does not possess an inversion center, Cooper pairs cannot
be classified into spin-singlet and spin-triplet due to parity mixing, and a variety ofnovel superconducting properties have been predicted. In this presentation the speci¿cheat and magnetic properties of the recently discoverednoncentrosymmetric 5d-electron superconductors
CaMSi3(M=Ir, Pt) and Li2(Pd1íxPtx)3B (x=0.84,1), thelatter are believed to be spin-triplet dominant, arereported. For CaIrSi3 (Tc = 3.7 K) and CaPtSi3 (Tc =
2.3 K) the experimental results suggest that thesesuperconductors belong a kind of conventional. For
Li2(Pd0.16Pt0.84)3B (Tc = 3.1 K) its superconducting
properties are revealed to be almost identical to thoseof Li2Pt3B(Tc=3.1 K). Nothing anomalous thatseems
to derive from the lack of inversion symmetry was Figure 1. Li2Pt3B electronic
observed in these 4 compounds. The details will be specific heat in various
magnetic fields.
given in the presentation. 2 䉝䊦䉦䊥䊄䊷䊒䊐䊦䊤䉟䊄㪚㫊㪊㪚㪍㪇䈮䈍䈔䉎䊝䉾䊃ォ⒖ㄭற䈱⿥વዉ䈫⏛ᕈ䈱㩷⎇ⓥ㩷
Ihara Yoshihikoa, Pawel Wiektekb Henri Alloulb, D. Pontirolic, M. Mazzancic, M Riccoc
a ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ࡄ࡝ධᄢቇ
c ࡄ࡞ࡑᄢቇ

E-mail㧦ihara@scphys.kyoto-u.ac.jp὇⚛ේሶ㧡ຬⅣ෸߮㧢ຬⅣࠍၮᧄ᭴ㅧߣߔࠆࠞ࡯ࡏࡦ࠽ࡁ࠴ࡘ࡯ࡉ‫ޔ‬ࠣ࡜ࡈࠚࡦ‫ߩߤߥࡦ࡟࡯࡜ࡈޔ‬὇⚛࠽ࡁ᭴ㅧ૕ߪ․ᓽ⊛ߥ⚿᥏᭴ㅧ‫ޔ‬㔚ሶ᭴ㅧࠍᜬߞߡ߅ࠅ‫ޔ‬ᔕ↪‫ޔ‬ታ↪ൻ߳ߩ⊒ዷߛߌߢߥߊᒝ⋧㑐㔚ሶ♽ߢᒁ߈⿠ߎߐࠇࠆ
ၮ␆⊛‛ℂ⃻⽎ߩ⸃᣿ߩߚ߼ߦ߽㊀ⷐߥᖱႎࠍឭଏߔࠆ‫ޕ‬Cs ࠍ࠼࡯ࡊߒߚࡈ࡞࡜ࠗ࠼
Cs3C60 ߪᏱ࿶ߢߪࡕ࠶࠻⛘✼૕ߢ޽ࠆ߇‫ޔ‬5 kbar ⒟ᐲߩ࿶ജߦࠃࠅ⿥વዉ૕߳ߣォ⒖ߔࠆ‫⚵ߩߎޕ‬ᚑߢߪ C60 ࡏ࡯࡞߇૕ᔃ┙ᣇ᭴ㅧߣ㕙ᔃ┙ᣇ᭴ㅧࠍᒻᚑߔࠆੑ⒳㘃ߩ⇣ᕈ૕߇ሽ࿷ߔࠆ߇‫߽ࠄߜߤޔ‬࿶ജਅߢߪ⿥વዉォ⒖ࠍ⿠ߎߔ‫ޕ‬৻ᣇߢᏱ࿶ߦ߅ߌࠆ⏛᳇⁁ᘒߪᄢ߈ߊ⇣ߥߞߡ߅ࠅ‫ޔ‬㕙ᔃ┙ᣇ᭴ㅧߢߪᐞ૗ቇ⊛ࡈ࡜ࠬ࠻࡟࡯࡚ࠪࡦߩലᨐߦࠃࠅ⏛᳇ォ⒖᷷ᐲ߇ᛥ߃ࠄࠇߡ޿ࠆߣ⠨߃ࠄࠇࠆ‫⚿ߩࠄࠇߎޕ‬ᨐߪ࠽ࡁ὇⚛᭴ㅧ૕ߩ‛ᕈࠍℂ⸃ߔࠆ਄ߢ‫ޔ‬㔚ሶ⋧㑐ߩലᨐࠍ⠨ᘦߔࠆߎߣߩ㊀ⷐᕈࠍ␜ߒߡ޿
ࠆ‫ޕ‬

56

2

㋕♽㜞᷷⿥વዉ૕ $C(G #UZ2Z  ߩ⿥વዉࠡࡖ࠶ࡊ᭴ㅧ೑ᩮᎹ ⠍ a ═ේ ᚑ b ᯅᧄ 㗼৻㇢ a ൎ⢆ ੫ a ባᚭ ኡ᣿ b ጊਅ ⓛ aኹ᎑ቁੳ b ⦼ౝ ቁ⑓ a ᧻↰ ␭ม aa ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇ╙৻ಽ㊁ ࿕૕㔚ሶ‛ᕈ⻠ᐳb ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦tonegawa@scphys.kyoto-u.ac.jp ⃻࿷‫ޔ‬㋕♽㜞᷷⿥વዉ૕ߦ߅޿ߡ⿥વዉኻ⒓ᕈ߇ታ㛎࡮ℂ⺰ߣ߽ߦ⋓ࠎߦ⎇ⓥ߇ߥߐࠇߡ޿ࠆ‫ߪߢ⾰‛ߩߎޕ‬㔚ሶ᭴ㅧߦ߅޿ߡࡎ࡯࡞㕙ߣ㔚ሶ㕙߇ሽ࿷ߔࠆߎߣ߇⍮ࠄࠇߡ߅ࠅ‫ޔ‬ਔ⠪ߩࡃࡦ࠼㑆ߩࡀࠬ࠹ࠖࡦࠣߦࠃࠆ෻ᒝ⏛ᕈࠁࠄ߉ࠍᇦ੺ߣߒߚ srᵄ⿥વዉኻ⒓ᕈ߇ℂ⺰⊛ߦᡰᜬߐࠇߟߟ޽ࠆ‫ߩߎޕ‬ℂ⺰ߦࠃࠆߣ Fermi 㕙ో૕ߦࠊߚߞߡࠡࡖ࠶ࡊ߇㐿޿ߡ߅ࠅ‫࠼ࡦࡃޔ‬㑆ߢࠡࡖ࠶ࡊߩ╓ภ߇෻ォߒߡ޿ࠆ‫ޕ‬ᄙߊߩ㋕⎆⚛♽㜞᷷⿥વዉ૕ߩታ㛎⚿ᨐߪߎߩࡈ࡞ࠡࡖ࠶ࡊ᭴ㅧࠍ␜ໂߒߡ޿ࠆ‫ޕ‬ ߒ߆ߒ‫ޔ‬ᚒ‫ ߪޘ‬BaFe2As2 ߩ As ࠍ P ߢ╬ଔ⟎឵ߒߚ BaFe2(As1-xPx)2 න⚿᥏ߦ߅޿ߡ⏛႐ଚ౉㐳‫ޔ‬ᾲવዉ₸ߩ᷹ቯߦࠃࠅࠡࡖ࠶ࡊߦࡁ࡯࠼᭴ㅧࠍᜬߟߎߣࠍ᣿ࠄ߆ߦߒߚ‫⿥ޕ‬વዉォ⒖᷷ᐲ߇ 30 K ߦ㆐ߔࠆ㜞޿୯ࠍᜬߜߥ߇ࠄ߽࡜ࠗࡦࡁ࡯࠼ࠍ߽ߟ㋕♽㜞᷷⿥વዉ૕
ߪ BaFe2(As1-xPx)2 ߇ೋ߼ߡߢ޽ࠆ‫ߦࠄߐޕ‬ᚒ‫ ߪޘ‬BaFe2(As1-xPx)2 න⚿᥏ࠍ↪޿ߡ㋕♽㜞᷷⿥વዉߩ࠼࡯ࡊၞߢߪೋߣߥࠆ dHvA ᝄേߩ᷹ⷰߦᚑഞߒߚ‫ޕ‬ᒰᣣߪ⏛႐ଚ౉㐳‫ޔ‬ᾲવዉ₸‫ޔ‬dHvA ᝄേߩ᷹ቯ⚿ᨐࠍ߰߹߃ߡ BaFe2(As1-xPx)2 ߩ⿥વዉࠡࡖ࠶ࡊ᭴ㅧߦߟ޿ߡ⼏⺰ߒߚ޿‫ޕ‬2

㊀޿㔚ሶ♽ൻว‛ %G+P ߩᰴరᕈ೙ᓮ

㧙%G+P.C+P ੱᎿ⿥ᩰሶߦࠃࠆ㊀޿㔚ሶߩ㧞ᰴర㐽ߓߎ߼㧙ባᚭ ኡ᣿ a,b‫⦼ޔ‬ౝ ቁ⑓ a‫ޔ‬቟ ৻᮸ a‫ޔ‬ട⮮ ᥓᚑ a‫ ⼱⚬ޔ‬ᶈ c‫ޔ‬ኹ᎑ ቁੳ b‫␭ ↰᧻ޔ‬ม aa ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇቝቮ‛ℂቇኾ᡹ ‛ℂቇ╙৻ಽ㊁b ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯c ฬฎደᄢቇ

ℂቇ⎇ⓥ⑼ ‛ℂቇኾ᡹

E-mail㧦katou@scphys.kyoto-u.ac.jp
 f 㔚ሶࠍᜬߟ࡜ࡦ࠲ࡁࠗ࠼߿ࠕࠢ࠴ࡁࠗ࠼ߩൻว‛ߦߪ‫ޔ‬ᒝ޿㔚ሶ㑆ߩ⋧੕૞↪ߩߚ߼
ߦ᦭ല⾰㊂߇Ⴧᄢߒߚ‫ޟ‬㊀޿㔚ሶ‫⁁ޠ‬ᘒߦߥࠆ߽ߩ߇޽ࠆ‫ޕ‬㊀޿㔚ሶ♽ߩ‛⾰ߪ㕖ᓥ᧪ဳߩ⿥વዉ߿⏛ᕈߥߤߩ⥝๧ᷓ޿ᕈ⾰ࠍ␜ߒ‫ޔ‬਎⇇ਛߢ♖ജ⊛ߦ⎇ⓥߐࠇߡ޿ࠆ‫ޕ‬ ㊀޿㔚ሶ߇㧞ᰴరߦ㐽ߓㄟ߼ࠄࠇࠆߣ‫ߩ߉ࠄំޔ‬Ⴧᄢߦࠃࠅ㔚ሶ⁁ᘒ߇ᄢ߈ߊᄌൻߔࠆ
ߎߣ߇ᦼᓙߐࠇࠆ‫ࠆ޿ߡࠇߐ⷗⊒ߦߢ߹ࠇߎޔߒ߆ߒޕ‬㊀޿㔚ሶ♽ߩ‛⾰ߪోߡ㧟ᰴరߩ㔚ሶ⁁ᘒߢ޽ࠅ‫ޔ‬㊀޿㔚ሶ߇㧞ᰴరߢߤߩ᭽ߦᝄࠆ⥰߁߆ߪᧂ⸃᳿ߩ໧㗴ߢ޽ࠆ‫ޕ‬ ᚒ‫੹ߪޘ‬࿁ MBE㧔ಽሶ✢ࠛࡇ࠲ࠠࠪ࡯㧕ᣇߦࠃࠅ‫ޔ‬f 㔚ሶࠍᜬߟ෻ᒝ⏛ᕈ૕ CeIn3 ߣ f㔚ሶࠍᜬߚߥ޿㕖⏛ᕈ૕ LaIn3 ߣࠍ੤੕ߦⓍጀߐߖߚ‫ੱޔ‬Ꮏ⿥ᩰሶ⭯⤑ߩ૞⵾ߦ਎⇇ߢೋ߼ߡᚑഞߒߚ‫ޕ‬CeIn3 ࠍ⭯ߊߔࠆߦߟࠇ‫ޔ‬෻ᒝ⏛ᕈォ⒖᷷ᐲ߇ૐߊߥࠆߥߤߩ‛ᕈߩᄌൻ߇⷗ࠄࠇߚ‫ޕ‬
H. Shishido et al, Science 327 (2010) 980.

57

2

㊀޿㔚ሶ♽⿥વዉ 74W5K ߩਅㇱ⥃⇇⏛႐᷹ቯਅỈ 㓷᣿ a, ጟፒ ┥ੑ a, ባᚭ ኡ᣿ a, ጊਅ ⓛ a, ⦼ౝ ቁ⑓ a, ᧻↰ ␭ม a,
Marcin Konczykowskib, ⧐⾐ ⧐▸ c, ᧻↰ ㆐⏴ c, ᄢ⽾ ᖳ⌬ c,da ੩ᄢ㒮ℂ, bEcole Polytechnique, c ේሶജᯏ᭴, d 㒋ᄢ㒮ℂE-mail㧦shimo@scphys.kyoto-u.ac.jp
 URu2Si2 ߪ Th = 17.5 K ߢᧂߛߦ⒎ᐨᄌᢙ߇ಽ߆ߞߡ޿ߥ޿‫ޟ‬㓝ࠇߚ⒎ᐨ‫⋧ߣ߳ޠ‬ォ⒖ߒ‫ߩߘޔ‬ᓟ Tc ~ 1.4 K ߢ⿥વዉߦォ⒖ߔࠆ‫⿥ߩߘޕ‬વዉ⁁ᘒߪ‫ߥ⦟⚐ޔ‬න⚿᥏ࠍ↪޿ߚᾲવዉ₸᷹ቯ߆ࠄᓥ᧪ߩ⿥વዉ૕ߣߪ⇣ߥࠆ⊒⃻ᯏ᭴ࠍ߽ߞߚࠞࠗ࡜࡞ d ᵄኻ⒓ᕈ߇ឭ໒ߐ
ࠇߡ޿ࠆ‫ߥ߁ࠃߩߎޕ‬ᣂᄸ⿥વዉߩℂ⸃ࠍᷓ߼ࠆ਄ߢᣂߚߥ᷹ቯᴺࠍ↪޿ߡኻ⒓ᕈࠍ⼏⺰ߔࠆߎߣߪ㕖Ᏹߦ㊀ⷐߢ޽ࠆ‫ޕ‬ ߘߎߢ੹࿁ᚒ‫ޔߪޘ‬ᓸዊࡎ࡯࡞⚛ሶࠕ࡟ࠗࠍ↪޿ߡฦ႐ᚲߦ߅ߌࠆዪᚲ⏛ൻ᷹ቯࠍⴕ޿‫ޔ‬⏛᧤ߩࡇࡦᱛ߼ലᨐߦࠃࠆ⏛᧤ߩଚ౉⏛႐ߩ႐ᚲଐሽᕈࠍ⠨ᘦߦ౉ࠇߡਅㇱ⥃⇇⏛႐ࠍ⹏ଔߒߚ‫ߢߎߎޕ‬ਅㇱ⥃⇇⏛႐ߪ⿥વዉߩၮᧄ⊛ߥࡄ࡜ࡔ࡯࠲ߢ޽ࠅ‫⿥ޔ‬વዉߩኻ⒓ᕈࠍ⼏⺰ߔࠆߚ߼ߦ㊀ⷐߢ޽ࠆ‫ޕ‬ਅㇱ⥃⇇⏛႐ߩ᷷ᐲଐሽᕈߪᓥ᧪ߩ⿥વዉߣߪ⇣ߥࠅ‫ޔ‬ૐ᷷ߢ㘻๺ߒߥ޿ᝄࠆ⥰޿ࠍ␜ߔߎߣ߆ࠄ⿥વዉࠡࡖ࠶ࡊߦ࡜ࠗࡦࡁ࡯࠼ߩሽ࿷߇␜ໂߐࠇࠆ‫ޕ‬߹ߚᣂߚߥ⇣Ᏹߣߒߡ TQ = 1.2 K ߢ᣿⏕ߥ kink ᭴ㅧ߇᣿ࠄ߆ߣߥߞߚ‫߽ࠇߎޕ‬ᓥ᧪ߢߪ⷗ࠄࠇߥ޿․⇣ߥᝄࠆ⥰޿ߢ޽ࠅ‫ޔ‬URu2Si2 ߩ․⇣ߥ⿥વዉኻ⒓ᕈࠍ෻ᤋߒߚ⚿ᨐߣ⸒߃ࠆ‫ޕ‬ ᒰᣣߪਅㇱ⥃⇇⏛႐ߩ⹦⚦ߦߟ޿ߡႎ๔ߔࠆ‫ޕ‬2

.C%Q#U1ࠍਛᔃߣߒߚጀ⁁ൻว‛ㆉᱧᒝ⏛ᕈ૕ߩ⎇ⓥ㩷ᄥ↰ ኡੱ, ㆏ጟ ජၔ, ศ᧛ ৻⦟੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ⑼ቇኾ᡹ ㊄⋧ቇ⎇ⓥቶ
E-mail㧦shioshio@kuchem.kyoto-u.ac.jp ጀ⁁ൻว‛ LaCoAsO ߪ㋕♽⿥વዉ૕ߩᲣ‛⾰ LaFeAsO ߣหߓ⚿᥏᭴ㅧࠍ᦭ߒ‫ࡘࠠޔ‬࡝࡯᷷ᐲ TC=55K ߩㆉᱧ㔚ሶᒝ⏛ᕈ૕ߢ޽ࠆ‫ޕ‬ੑᰴరવዉ㕙ߢ޽ࠆ CoAs ጀߦ߅޿ߡ Co߇ᱜᣇᩰሶࠍᒻᚑߒ‫ޔ‬Co ߩ 3d ࡃࡦ࠼ߩ㔚ሶ߇ㆉᱧᒝ⏛ᕈࠍ␜ߔ‫ޕ‬ ᦨㄭ La ࠨࠗ࠻ߩర⚛ࠍࠃࠅ㊀޿ Ce~Gd ߦᄌ߃ߚߣߎࠈ‫ߩࠄࠇߎޔ‬ర⚛ߩ 4f ዪ࿷㔚ሶߩ⏛᳇ࡕ࡯ࡔࡦ࠻ߣ Co ߩㆉᱧ㔚ሶߩ㑆ߩ⋧੕૞↪ߦ⿠࿃ߔࠆߣ⠨߃ࠄࠇࠆ᭽‫⏛ߥޘ‬᳇⒎ᐨ⁁ᘒ߇ታ⃻ߒߡ޿ࠆߎߣ߇ಽ߆ߞߡ߈ߚ‫ ߫߃଀ޕ‬SmCoAsO ߿ NdCoAsO ߢߪ TC=70K
ߦߡᒝ⏛ᕈ⋧ォ⒖ࠍ⿠ߎߒ‫ߦࠄߐޔ‬ૐ᷷(Smߢ 42K, Nd ߢ 14K)ߦ߅޿ߡ෻ᒝ⏛ᕈ⁁ᘒߦ

7C⋧ォ⒖ߔࠆ‫ޕ‬ ᒰᣣߩ⊒⴫ߢߪ‫ ߩࠄࠇߎޔ‬La ࠨࠗ࠻⟎឵

7N♽ߩᦨㄭߩ⎇ⓥ⚿ᨐ‫ ߮ࠃ߅ޔ‬LaCoAsO ߦ㑐ߔࠆᒝ⏛ᕈࠬࡇࡦំࠄ߉ߩ⎇ⓥߩㅴዷ‫ࠄߐޔ‬ߦ NMR ߦࠃࠆᓸⷞ⊛ߥ⎇ⓥߦߟ޿ߡႎ๔ߔ
ࠆ‫ޕ‬

58

࿑: LnCoAsO ߩ⏛᳇⋧࿑.

2

5T6)G ర♽ൻว‛ߩวᚑߣ‛ᕈ㇊ᵄ ๺ብ䋬㆏ጟ ජၔ䋬ศ᧛ ৻⦟੩ㇺᄢቇℂቇ⎇ⓥ⑼ൻቇኾ᡹㊄⋧ቇ⎇ⓥቶ
'OCKN䋺MPCYC"MWEJGOM[QVQWCELRࠕ࡞ࠞ࡝࿯㘃㊄ዻ㧘ㆫ⒖㊄ዻ㧘ࠥ࡞ࡑ࠾࠙ࡓߩ  ర♽ൻว‛ߪੑᰴర⊛ߥ⚿᥏᭴ㅧࠍ᦭ߔࠆ߽ߩ߇ᄙߊ㧘ૐᰴర‛ᕈߩⷞὐ߆ࠄ⥝๧ᷓ޿‫  ߩߎޕ‬ర♽ൻว‛ߩ␜ߔ‛ᕈࠍ᣿ࠄ߆
ߦߔࠆߚ߼㧘Sr-Ni-Ge[1,2]ߩ  ర♽ൻว‛෸߮ᄙ⒳ߦࠊߚ
ࠆㆫ⒖㊄ዻర⚛ 6 ߆ࠄ᭴ᚑߐࠇࠆൻว‛♽ SrT2Ge2 [2]ߦᵈ⋡ߒߡ⎇ⓥࠍⴕߞߚ‫ޕ‬วᚑߪࠕ࡯ࠢṁⲢᴺߦߡⴕ޿‫⏛ޔ‬ൻ᷹ቯߦࠃࠆ⏛ᕈߩ⎇ⓥࠍⴕߞߚ‫ޕ‬࿑ߦ␜ߔࠃ߁ߦ Sr-Ni-Ge ర♽ൻว‛ߢߪ SrNi2Ge ߪࠠࡘ࡝࡯ࡢࠗࠬೣߦᓥ߁᷷ᐲᄌൻࠍ␜ߒ㧘SrNi3Ge2 㧘SrNiGe2 㧘
SrNi2Ge2 ߩ⏛ൻߪ߶ߣࠎߤ᷷ᐲᄌൻࠍ␜ߐߥ߆ߞߚ‫৻ޕ‬ᣇ㧘
SrMn2Ge2 ߿ SrCo2Ge2 ߪ⏛ൻᦛ✢ߦࡅࠬ࠹࡝ࠪࠬࠍ↢ߓࠆᒝ࿑ Sr-Ni-Ge 3 ర♽ൻว‛ߩ⏛ൻ₸⏛ᕈ⊛ߥᝄࠆ⥰޿ࠍߺߖߚ‫⏛ߩࠄࠇߎޕ‬ൻ᷹ቯߩ⚿ᨐ߆ࠄߪ㧘⚿᥏᭴ㅧߪ㔚ሶ⋧㑐ߦ㧘⚵
ᚑ߿ㆫ⒖㊄ዻర⚛ߩ⋧㆑ߪ⁁ᘒኒᐲߩᄢ߈ߐߦᄢ߈ߥᓇ㗀ࠍਈ߃ߡ޿ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬[1] V. Hlukhyy, et. al., Z. Anorg. Allg. Chem. 634 (2008) 2316
[2] W. Dorrscheidt, et. al., Z. Naturforsch. 31B (1976) 890


2

2D1V[RG(G5G ߩวᚑߣ‛ᕈᎹ⌀⍮, ᬢ㊄⯥, ᄥ↰ኡੱ, ㆏ጟජၔ, ศ᧛৻⦟੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ൻቇኾ᡹ ㊄⋧ቇ⎇ⓥቶ
E-mail㧦kawa@kuchem.kyoto-u.ac.jp
 LaFeAsO ࠍᆎ߼ߣߔࠆ㋕࠾ࠢ࠲ࠗ࠻ࠍࡌ࡯ࠬߣߒߚ⿥વዉ૕ߩ㑐ㅪ‛⾰ߣߒߡ‫ޔ‬PbOtype FeSe㧔એਅ FeSe㧕߇޽ࠆ‫ޕ‬ ੹࿁‫઀ޔ‬ㄟߺߩ⚵ᚑ߇ FexSe(0.98 < x < 1.17) ߣߥࠆࠃ߁ߦ FeSe ࠍวᚑߒ‫⿥ޔ‬વዉᕈࠍਛᔃߣߒߚ‛ᕈࠍ᷹ቯߒߚ‫઀ޕ‬ㄟߺߩ㋕ߩ⚵ᚑ߇ 1.09 < x < 1.15 ߩ▸࿐ߢߪ߶߷න⋧ߩ⹜ᢱ߇ᓧࠄࠇ‫ ߪࠄࠇߘޔ‬Tc=8.5 K ߢ⿥વዉࠍ␜ߒߚ‫ޕ‬ ߹ߚ‫ޔ‬ォ⒖᷷ᐲࠃࠅ߽㜞᷷஥ߩ⏛ൻࠍ⺞ߴߚߣߎࠈ‫⏛ޔ‬ൻߦਇ⚐‛ Fe3O4 ߦࠃࠆᓇ㗀߇⷗ࠄࠇߚ‫ޔ߼ߚߩߘޕ‬วᚑߩ㓙ߦ Ti ࠍ↪޿ߡ㋕ࠍ
ㆶరߒ Fe3O4 ࠍ㒰޿ߚ⹜ᢱࠍ૞ᚑߒߚߣߎࠈ‫ߩߘޔ‬⏛ൻ₸ߩ᷷ᐲଐሽᕈߪ࿑ߩࠃ߁ߦߥࠅ‫ޔ‬෻ᒝ⏛ᕈ⊛ߥ⋧੕૞↪ߩሽ࿷߇␜ໂߐࠇࠆߎߣ߇᣿ࠄ߆ߦߥߞ
ߚ‫੹ߪࠇߎޕ‬੗ࠄߦࠃࠆ FeSe ߩ 77Se-NMR ᷹ቯߢߩ࠽ࠗ࠻ࠪࡈ࠻ߩ߰ࠆ߹޿ߣ߽ࠃߊૃߡ޿ࠆ[1]‫ޕ‬ ᒰᣣߩ⊒⴫ߢߪ‫⋧ޔ‬࿑߿⿥વዉᕈ╬ߩ‛ᕈߩ⚵ᚑଐሽᕈߦ㑐ߒߡ෸߮ਇ⚐‛ࠍ㒰޿ߚ FeSe ߩᧄ⾰⊛ߥ⏛ൻߦߟ޿ߡ⹦⚦ߦႎ๔ߔࠆ੍ቯߢ޽ࠆ‫ޕ‬[1] T. Imai, et al. Phys. Rev. Lett. 102 (2009) 177005
592(G6G߅ࠃ߮ߘߩ๟ㄝ‛⾰ߩวᚑߣ‛ᕈ⎇ⓥ㩷᧻੗ ߹ߺ, ᬢ ㊄⯥, ᄥ↰ ኡੱ, ㆏ጟ ජၔ, ศ᧛ ৻⦟੩ㇺᄢቇᄢቇ㒮 ℂቇ⎇ⓥ⑼ ൻቇኾ᡹ ㊄⋧ቇ⎇ⓥቶ
E-mail㧦matsuima@kuchem.kyoto-u.ac.jp
 PbO ဳ FeSe ߪ Fe ߦ Se ߇྾㕙૕㈩૏ߒߚ FeSe ጀ߇Ⓧጀߒߚᡆੑᰴరጀ⁁᭴ㅧࠍᒻᚑ
ߒߡ߅ࠅ‫ޔ‬ᣂⷙ㋕♽⿥વዉ‛⾰ߩਛߢߪᦨ߽න⚐ߥ᭴ㅧࠍ᦭ߔࠆ߽ߩߢ޽ࠆ‫৻ޕ‬ᣇ‫ޔ‬PbO
ဳ FeTe ߪߎࠇߣหߓ᭴ㅧࠍᜬߟ߇⿥વዉࠍ␜ߐߕ‫ޔ‬65 K ઃㄭߢ᭴ㅧ⋧ォ⒖ߣ෻ᒝ⏛ᕈォ
⒖ࠍ⿠ߎߒ‫ ߦᦝޔ‬PbO ဳ FeTe ߩ Te ߩ৻ㇱࠍ Se ߢ⟎឵ߔࠆߣ⿥વዉࠍ␜ߔ‫ޕ‬ ੹࿁ᚒ‫ߩ♽ߩߎߪޘ‬න⚿᥏ߩวᚑ‫‛ޔ‬ᕈ᷹
Fe1.04Te0.67Se0.33

ߩߺ߇⷗߃ߡ޿ࠆ‫ߦࠄߐޕ‬ᓸⷞ⊛ߥ⁁ᘒࠍ⺞ߴࠆߚ߼ߦ NMR ᷹ቯࠍⴕߞߚ‫⚿ߩߘޕ‬ᨐ‫ޔ‬
FeTe1-xSex ߩ⿥વዉߪᒝ⋧㑐♽ߦ․᦭ߩ㕖
BCS ဳߢ޽ࠆߎߣ߇᣿ࠄ߆ߦߥߞߚ‫ޕ‬ᒰᣣIntensity (arb.units)ቯࠍⴕߞߚ‫ޕ‬࿑ߢߪන⚿᥏ߩ㧔00l㧕ࡇ࡯ࠢ

Fe1.01Te0.88Se0.12

Fe1.07Te0.80Se0.20

Fe1.00Te0.95Se0.052060ߩ⊒⴫ߢߪ‫ߡ޿ߟߦࠄࠇߎޔ‬ႎ๔ߔࠆ‫ޕ‬
40
2T q

80

࿑: FeTe1-xSex ߩ XRD ࡄ࠲࡯ࡦ

2(G)G6G ߩวᚑߣ⏛ᕈ㒸ᢩ‫ޔ‬ᬢ㊄⯥‫ޔ‬ᄥ↰ኡੱ‫ޔ‬㆏ጟජၔ‫ޔ‬ศ᧛৻⦟੩ㇺᄢቇℂቇ⎇ⓥ⑼ ൻቇኾ᡹'OCKN㧦EJGPDKP"MWEJGOM[QVQWCELR 
 Fe3GeTe2ߪ2005ᐕ⊒⷗ߐࠇߚጀ⁁᭴ㅧࠍᜬߟ‫࡯࡝ࡘࠠޔ‬᷷ᐲ߇230Kߩ
ᒝ⏛ᕈ૕ߢ޽ࠆ‫⚿ޕ‬᥏♽ߪ౐ᣇ᥏♽ߢ޽ࠅ‫ޔ‬ⓨ㑆⟲ߪP63/mmcߦዻߔ‫⚿ޕ‬
᥏᭴ㅧߪTeጀгFeGeጀгTeጀߩⓍጀ᭴ㅧߦߥߞߡ޿ࠆ‫⏛ޕ‬ᕈߣ޿߁┙႐ߢ⷗ࠆߣ‫ޔ‬ੑᰴరㆉᱧ⏛ᕈࠍ␜ߔน⢻ᕈࠍᜬߟ⥝๧ᷓ޿‛⾰ߢ޽ࠆ‫⏛ߥ⚦⹦ߩ⾰‛ߩߎޕ‬᳇⊛ᕈ⾰ࠍ᣿ࠄ߆ߦߔࠆߚ߼‫ޔ‬ൻቇャㅍᴺࠍ↪޿ߡන⚿᥏⹜ᢱวᚑࠍⴕ޿‫ޔ‬SQUID⏛᧤⸘ߦࠃࠆ⏛ൻ᷹ቯࠍⴕߞߚ‫ޕ‬න⚿᥏⹜ᢱ⏛ൻ᷹ቯߩ⚿ᨐ‫ߪ⾰‛ߩߘޔ‬ᄢ߈ߥ⏛᳇⇣ᣇᕈࠍᜬߜ‫ޔ‬ኈᤃゲߪcゲߢ޽ࠆߎߣ߇ಽ߆ߞߚ‫⥄ޔߡߒߘޕ‬⊒⏛ൻߣ᦭ലࡏ࡯ࠕ⏛ሶߪߘࠇߙࠇ1.6 PB/Fe‫ޔ‬4.6 PB/Feߣ⷗
Ⓧࠄࠇߚ‫ޕ‬᷹ቯߒߚ⏛ൻߩ࠺࡯࠲ߦኻߒߡ‫ޔ‬M4-H/Mߩࠃ߁ߥᒻߦࡊࡠ࠶࠻ߔࠆߣ‫ޔ‬ฝ࿑ߦ␜ߔࠃ߁ߦࠃ޿⋥✢ߦߥࠆߎߣ߇ಽ߆ߞߚ‫ߡߒߘޕ‬ᐳᮡේὐࠍߣࠆ᷷ᐲ߆ࠄࠠࡘ࡝࡯
᷷ᐲ߇220 Kߣ⹏ଔߢ߈ߚ‫ޕ‬ᒰᣣߩ⊒⴫ߢߪSCRℂ⺰෸߮Takahashiℂ⺰ߦࠃࠆቯ㊂⊛ߥ⸃ᨆ⚿ᨐࠍ⹦ߒߊႎ๔ߔࠆ੍
ቯߢ޽ࠆ‫ޕ‬60

2Magnetic Properties of Single Crystals of Pseudobinary

Fe1-[Co[Te0.85 System
Jinhu Yang, Mami Matsui, Hiroto Ohta, Chishiro Michioka andKazuyoshi Yoshimura
Department of Chemistry, Graduate School of Science, Kyoto
University
yangjinhu@kuchem.kyoto-u.ac.jp
The recent discovery of superconductivity in iron-based layered compounds has
attracted a great deal of research interests. In contrast to the other iron-based
superconductors, FeCh belongs to P4/nmm space group and has the simplest structure.
FeSe is a superconductor with Tc of 8 K. Interestingly, theoretic calculation indicatedthat the spin density wave is more stable in FeTe than that in FeSe, and therefore amuch higher Tc was expected in FeTe by substitution or other ways.
Single crystals of Fe1-xCoxTe0.85 have been synthesized successfully with x = 0,0.02, 0.03, 0.05 and 0.10. The cobalt can be substituted for the iron site as Fe1-xCoxTe0.85
up to a solubility limit of x = 0.10, above which an impurity phase was observed. We
obtained the intrinsic susceptibilities of these samples by Honda-Owen plot. The
antiferromagnetic transition temperature decreases from about 70 K (x = 0) to 34 K (x =0.05) with increasing the Co substitution level. Superconductivity was not discovered inthis series, but a spin-glass like behavior was observed in 5% substituted sample.
2ታⓨ㑆ߦ߅ߌࠆࡊࡠ࠻ࡦ⒖േߩ᷹ⷰ
ᅏጊ ᒄ a, ᾢ⼱ ፏ a, ౎↰ ᝄ৻㇢ a, ᦭⾐ ື਽ a,ự↰ᐞᄥ㇢ b,᫪Ꮉ⦟ᔘ ca ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ൻቇኾ᡹b ᧲ർᄢቇ

ේሶಽሶ᧚ᢱ⑼ቇ㜞╬⎇ⓥᯏ᭴

c ᄢ㒋ᄢቇ

Ꮏቇ⎇ⓥ⑼ ᔕ↪‛ℂቇኾ᡹

E-mail㧦hokuyama@kuchem.kyoto-u.ac.jp ⿛ᩏ࠻ࡦࡀ࡞㗼ᓸ㏜(STM)ࠍ↪޿ߡ‫ޔ‬6 K ߩ Cu(110)⴫
㕙਄ߦๆ⌕ߒߚ᳓ಽሶ߆ࠄ‫ޔ‬᳓㉄ၮ㧞ߟߣ᳓ಽሶ㧝ߟ߆ࠄߥࠆ᳓⚛⚿วⶄว૕ࠍ૞ᚑߒߚ㧔࿑㧝㧕‫ⶄߩߎޕ‬ว૕ߦ㔚࿶ࠍශടߔࠆߎߣߦࠃࠅ‫ޔ‬㧞ߟߩ᳓⚛ේሶ߇᳓⚛⚿วߣ౒᦭⚿วࠍ౉ࠇᦧ߃‫⚛㉄ޔ‬ේሶ㑆ࠍ⒖േߔࠆߎߣ߇᣿ࠄ߆ߦ
ߥߞߚ㧔࿑㧝㧕‫ޕ‬᳓ṁᶧౝ߿↢૕෻ᔕߦ߅޿ߡ‫ࡦ࠻ࡠࡊޔ‬ߪ᳓⚛⚿วࠍ੺ߒߡ㜞ㅦߦ࡝࡟࡯⒖േߔࠆߎߣ߇⍮ࠄࠇߡ߅ࠅ㧔ࠣࡠ࡯࠲ࠬᯏ᭴㧕‫੹ޔ‬࿁ᚒ‫ࡦ࠻ࡠࡊߪޘ‬⒖േߩࡕ࠺
࡞ࠍታⓨ㑆ߦ߅޿ߡ૞ᚑߒ‫ߩߘޔ‬෻ᔕࠍนⷞൻߔࠆߎߣߦ
ᚑഞߒߚ‫⚛㉄ޔߦࠄߐޕ‬ේሶ㧠ߟߣ᳓⚛ේሶ㧡ߟ߆ࠄߥࠆ

࿑㧝ࡊࡠ࠻ࡦ⒖േ෻ᔕ

ห᭽ߩⶄว૕ࠍ૞ᚑߒ‫ޔ‬㧟㊀ߩࡊࡠ࠻ࡦ⒖േ෻ᔕ߽᷹ⷰߒߚ‫ޕ‬61

2᳓࠴ࡖࡀ࡞ #SWCRQTKP ߣㅦ޿᳓ㆬᛯㅘㆊᯏ᭴⼱ ৻ኼ a, ਃẪ ᔘౖ a, ᑝ᣿ ᵗሶ a, ੉Ꮉ ੝Ꮧሶ a, ⷏Ꮉ ᐘᏗ a,⮮ศ ᅢೣ a, ba ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ↢‛⑼ቇኾ᡹ ↢‛‛ℂቇᢎቶb ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦tani@em.biophys.kyoto-u.ac.jp᳓ࠍㆬᛯ⊛ߦㅢߔⓣ㧔࠴ࡖࡀ࡞㧕ߣߒߡࠕࠢࠕࡐ࡝ࡦ-1(aquaporin-1; AQP1)߇‫⿒࠻ࡅޔ‬ⴊ⃿ߦ߅޿ߡ⊒⷗ߐࠇߡ߆ࠄ‫ޔ‬AQP ࡈࠔࡒ࡝࡯߇⚦⩶߆ࠄູ੃㘃߹ߢᐢߊሽ࿷ߒ‫ߢ࠻ࡅޔ‬ߪ AQP0 ߆ࠄ 12 ߹ߢߩ 13 ୘ߩㆮવሶࠍ଻ᜬߒߡ޿ࠆߎߣ߇ࠊ߆ߞߡ߈ߚ‫ߩߘޕ‬ਛߢ⣖ߩ᳓ઍ⻢ߦᄢ߈ߊ㑐ࠊߞߡ޿ࠆߣߐࠇࠆ AQP4 ߪ‫ޔ‬ㅦ޿᳓ߩㅘㆊᕈࠍᜬߟߎߣ߇⍮ࠄࠇߡ޿ࠆ‫ޕ‬2006 ᐕߦᚒ‫ޔߪࡊ࡯࡞ࠣߩޘ‬ᶧ૕ࡋ࡝࠙ࡓࠬ࠹࡯ࠫࠍ஻߃ߚᭂૐ᷷㔚ሶ㗼ᓸ㏜ߣੑ
ᰴర⚿᥏ࠍ↪޿ߚ᭴ㅧ⸃ᨆ㧔3.2Έಽ⸃⢻㧕߆ࠄ⚦⢩ធ⌕ᕈ߽ᜬߟߎߣࠍ␜ໂߒ‫ޔ‬ᯏ⢻ታ㛎ߦࠃߞߡ⏕⹺ߒߚ(J.Mol.Biol.,355:628)‫ߩߘޕ‬ᓟ‫ޔ‬ᄌ⇣ࠍട߃ߚㆮવሶ(180 ⇟⋡ߩࠕࡒࡁ㉄ Ser ࠍ Asp)ࠍ↪޿ࠆߎߣߢ‫⚿ޔ‬᥏ᕈߩะ਄߇⷗ㄟ߼ࠆߎߣ߇್᣿ߒ‫⃻ޔ‬࿷ 2.8Έಽ⸃⢻ߩ┙૕᭴ㅧࠍ᳿ቯߢ߈᳓ಽሶ߿⢽⾰ಽሶ߽นⷞൻ
ߔࠆߎߣߦᚑഞߒߚ(J.Mol.Biol.,389:694)‫ޔߪߢ⴫⊒ᧄޕ‬࠴ࡖࡀ࡞ౝߩ᳓ಽሶߦ⌕⋡ߒߡ┙૕᭴ㅧᖱႎߦၮߠ޿ߚ
ㅦ޿᳓ㆬᛯㅘㆊᯏ᭴ߦߟ޿ߡߩႎ๔ࠍⴕ߁‫ޕ‬࿑  #32 ߩ┙૕᭴ㅧ

2 Structures of connexin26 mutants demonstrate a

global flexibility of subunits and N-terminal
Atsunori Oshima1, Kazutoshi Tani1, Masoud M. Toloue2, Yoko Hiroaki1, Amy Smock3,
Sayaka Inukai1, Bruce J. Nicholson2, Gina E. Sosinsky3 and Yoshinori Fujiyoshi1
E-mail: atsu@em.biophys.kyoto-u.ac.jp
1. Department of Biophysics, Faculty of Science, Kyoto University
2. Department of Biochemistry, University of Texas Health Science Center at San
Antonio
3. National Center for Microscopy and Imaging Research, Department of Neurosciences, University ofCalifornia, San Diego Gap junction channels are unique in that they possess multiple mechanisms for channel closure,
however, structural insights into the gating mechanism have been limited by the lack of isolation ofclosed versus open channels for each gating mechanism. Here, we present three dimensional maps ofthe mutant connexin26 (Cx26M34A) and an N-terminal deletion of this mutant (Cx26M34Adel2-7) at 6
and 10 Å resolution, respectively, determined by electron crystallography. Three of the six connexin
subunits in the Cx26M34A hemichannels have non-equivalent configurations resulting in a departurefrom strict hexagonal symmetry. The volume of the density seen in the pore of the Cx26M34A channels
is prominently decreased in the Cx26M34Adel2-7 pore, but a slim density still resides. A projection
map of Cx26 wild type (Cx26WT) channel at 10Å resolution and crystallized under conditions
promoting a closed state reveals a density in the pore that is weaker than the Cx26M34A plug, however
the high variance peak from the crystallographic averaging indicates that the Cx26WT N-terminus isvery flexible. The fitting of a recent X-ray crystallographic structure of Cx26 into the Cx26M34A andCx26M34Adel2-7 2D crystal maps reveals radial shifts of the transmembrane helices toward outside of
the channel. This movement of the six monomers within each of the two hemichannels may reflect a
difference between an open state (3D crystals) and a closed state (2D crystals), but also reflects that inthe 2D crystals, the channels are surrounded by two lipid bilayers. In addition, the channels in the 2D
crystals show complex structural features at cytoplasmic side distinct from the 3D crystal structure.
Thus, flexibility of inter subunit interactions and rearrangement of an N-terminus to form a “plug”
create a closed channel for the M34A mutant.

622㔚ሶ✢࠻ࡕࠣ࡜ࡈࠖߦࠃࠆ㔚᳇ࠪ࠽ࡊࠬ⚿วㇱ૏ߩਃᰴర
᭴ㅧߩⷰኤ
ᄥ↰቟⟤ a‫⷏ޔ‬ᎹᐘᏗ b‫ޔ‬ዊᨋ৻⟤ c‫ޔ‬ᑝ᣿ᵗሶ a‫ޔ‬ᐔ੗ᾖਭ d‫⮮ޔ‬ศᅢೣ aa ੩ㇺᄢቇ

ℂቇ⎇ⓥ⑼ ↢‛⑼ቇኾ᡹‫ޔ‬b ␠࿅ᴺੱ ࡃࠗࠝ↥ᬺᖱႎࠦࡦ࠰

࡯ࠪࠕࡓ‫ޔ‬c ᣣᧄ㔚ሶᩣᑼળ␠‫ޔ‬d ℂൻቇ⎇ⓥᚲ᠞⏴⎇ⓥᚲ᡼኿శ⑼ቇ✚ว⎇ⓥ࠮ࡦ࠲࡯
E-mail㧦ohta@em.biophys.kyoto-u.ac.jp 㔚ሶ✢࠻ࡕࠣ࡜ࡈࠖߪ‫ޔ‬ㅘㆊ㔚ሶ㗼ᓸ㏜ߢ᠟ᓇߒߚㅪ⛯௑ᢳ௝ࠍࠦࡦࡇࡘ࡯࠲⸃ᨆߒ‫ޔ‬ਃᰴరౣ᭴ᚑ௝ࠍ᭴▽ߔࠆᛛᴺߢ޽ࠆ‫ޕ‬ᚒ‫⚦⚻␹ߪޘ‬⢩㑆ߩᖱႎવ㆐ߩ⸃᣿ߩߚ߼‫ߩߎޔ‬
ᛛᴺࠍ↪޿ߡᖱႎવ㆐ߩ႐ߢ޽ࠆࠪ࠽ࡊࠬࠍ┙૕⊛ߦนⷞൻߒߚ‫⹜‛↢ޕ‬ᢱߪ㔚ሶ✢៊்ࠍฃߌ߿ߔ޿਄‫ߪࠖࡈ࡜ࠣࡕ࠻ޔ‬หߓ⹜ᢱߦኻߒߡㅪ⛯௑ᢳ௝ࠍ᠟ᓇߔࠆᔅⷐ߇޽ࠅᾖ኿
㔚ሶ✢㊂߇ᄙߊߥߞߡߒ߹߁‫ߩߎޕ‬໧㗴ࠍ⸃᳿ߔࠆߚ߼ߦᭂૐ᷷㔚ሶ㗼ᓸ㏜ࠍ↪޿ߚ߇‫ޔ‬หᤨߦ㕖᥏⾰ߩ᳖ߢ൮ၒߒߚ㕖࿕ቯ‫ޔ‬㕖ᨴ⦡ߩ↢૕ⅣႺࠍ⛽ᜬߒߚ⁁ᘒࠍⷰኤߢ߈ࠆ೑ὐ
߽޽ࠆ‫ޕ‬࿑ 1 ߪ࡜࠶࠻೨⣖ߩ㔚᳇ࠪ࠽ࡊࠬߩਃᰴరౣ᭴ᚑᓟߩࠬ࡜ࠗ
ࠬᢿ㕙௝ߢ޽ࠆ‫ޕ‬⢽⾰ੑ㊀⤑߇ಽ㔌ߒߡ⷗߃ࠆಽ⸃⢻ߢ⤑ߦⷙೣ⊛ߦਗ߱㔚ሶኒᐲߣ⤑㑆㓒 3㨪4nm ࠍ଻ߟ gap ⚿วߣ⠨߃ࠄࠇࠆ᭴ㅧ߇ᐢ
▸࿐ߢᓧࠄࠇߚ‫ޔߚ߹ޕ‬ᭂૐ᷷㔚ሶ㗼ᓸ㏜ࠍ↪޿ߥ޿ߢࠕࡔ࡝ࠞࠩ࡝
ࠟ࠾ߩ㔚᳇ࠪ࠽ࡊࠬߩਃᰴరౣ᭴ᚑ௝߽ᓧࠄࠇߚߩߢᲧセᬌ⸛ߔࠆ‫ޕ‬

࿑1
2ᭂૐ᷷㔚ሶ㗼ᓸ㏜ߦࠃࠆ⢗ࡊࡠ࠻ࡦࡐࡦࡊߩ┙૕᭴ㅧ⸃ᨆ
㒙ㇱ ৻໪, ⼱ ৻ኼ, ⮮ศ ᅢೣ੩ㇺᄢቇ ℂቇ⎇ⓥ⑼ ↢‛⑼ቇኾ᡹ ↢‛‛ℂቇᢎቶ
E-mail㧦ikkei@em.biophys.kyoto-u.ac.jp㘩‛ᶖൻᤨߩ⢗ౝ⣧ߩ pH ߪ⢗ࡊࡠ࠻ࡦࡐࡦࡊ(H+,K+-ATPase)ߦࠃࠆ H+ߩャㅍ‫ߥߔޔ‬ࠊߜ⢗㉄ߩಽᴲߦࠃߞߡ⚂ 1 ߦ߽ߥࠆ‫ߩߎޕ‬ᒝ㉄ᕈߩⅣႺߪᶖൻߦߣߞߡ㊀ⷐߢ޽ࠆ߫߆ࠅ ߢ ߥ ߊ‫ ߩ ߤ ߥࠕ࡝ ࠹ ࠢ ࡃޔ‬ᗵᨴߦ ኻ ߔ ࠆᦨೋ ߩ ࡃ ࡝ࠕߣ ߒ ߡ ߽ᯏ⢻ ߔ ࠆ ‫ ޕ‬H+,K+ATPase ߪߤߩࠃ߁ߦߒߡ‫⚦ޔ‬⢩ౝᄖߢߩ pH Ꮕߦߒߡ 6‫ ⚂ࠅ߹ߟޔ‬100 ਁ୚(106)߽ߩ
H+Ớᐲ൨㈩ࠍ૞ࠅ಴ߔߩ߆ࠍ᣿ࠄ߆ߦߔࠆὑߦ‫ޔ‬ᚒ‫ߪޘ‬ᭂૐ᷷㔚ሶ㗼ᓸ㏜ࠍ↪޿ߚ᭴ㅧ⸃
ᨆࠍⴕߞߚ‫ޕ‬H+,K+-ATPase ߩੑᰴర⚿᥏ࠍ૞ᚑߒ‫ޔ‬᳖ၒ൮ߒߚࠨࡦࡊ࡞ࠍᶧ૕ࡋ࡝࠙ࡓ
᷷ᐲߦ಄ළߢ߈ࠆᭂૐ᷷㔚ሶ㗼ᓸ㏜ࠍ↪޿ߡ᠟ᓇ‫⚿ޔ‬᥏ቇߦၮ߈⸃ᨆߒߚ‫ޕ‬ᓧࠄࠇߚ 6.5Åߩ┙૕᭴ㅧ߆ࠄ‫ߩߎޔ‬ಽሶߦ․ᓽ⊛ߥDEࠨࡉ࡙࠾࠶࠻㑆ߢߩ⋧੕૞↪ࠍ⷗಴ߒߚ‫ޕ‬ᄌ⇣૕ߦࠃࠆ㉂⚛ൻቇ⊛⸃ᨆ⚿ᨐ߆ࠄ‫⋧ߩߎޔ‬੕૞↪߇ H+ࠍ⢗ౝ⣧ߦャㅍߔࠆࠬ࠹࠶ࡊߦ߅޿
ߡㅒะ߈ߩ෻ᔕࠍ㒐ᱛߔࠆ‫ߥ߁ࠃߩ࠻࠶ࠚ࠴࡜߫ࠊ޿ޔ‬௛߈ࠍߒߡ޿ࠆߎߣ߇␜ໂߐࠇߚ‫ޕ‬⚦⢩ౝᄖߢߩ㕖Ᏹߦᄢ߈ߥ H+Ớᐲ൨㈩ߪ‫ࡦࠝࠗޔ‬ャㅍ෻ᔕࠍㅒⴕߐߖࠆᒝ޿࿶ജߣߥࠆ‫ޕ‬
H+,K+-ATPase ߪಽሶౝߦ࡜࠴ࠚ࠶࠻ࠍ஻߃ߡ޿ࠆߎߣߢ‫ޔ‬H+ߩㅒᵹࠍ㒐߉‫࠰ࠗࠕߩઁޔ‬ࡈࠜ࡯ࡓߦߪታ⃻ߢ߈ߥ޿ 100 ਁ୚߽ߩࠗࠝࡦỚᐲ൨㈩ࠍᒻᚑߢ߈ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬63

2㊂ሶࠬࡇࡦࡄࠗࡠࠢࡠࠕ෻ᒝ⏛ᕈ૕ %W1%N ߩ 0/4
⷏ጊ ᣽⑲ a, દ⮮ ື᣿ a, ዊጊ↰ ᣿ a, ೨Ꮉ ⷡ a, ጟㇱ ඳቁ b, ⑺శ ⚐ ba ੩ㇺᄢቇᄢቇ㒮b 㕍ጊᄢቇ

ੱ㑆࡮ⅣႺቇ⎇ⓥ⑼ ೨Ꮉ⎇ⓥቶ

ℂᎿቇㇱ

E-mail㧦nishiyama.masahide@kt3.ecs.kyoto-u.ac.jp
 Cu2OCl2 ߪ s=1/2 ࠍ߽ߟ Cu2+߇⏛ᕈࠍᜂ߁෻ᒝ⏛ᕈ૕ߢ޽ࠅ‫ޔ‬ㆫ⒖㊄ዻ♽ࡄࠗࡠࠢࡠࠕ
ᩰሶ෻ᒝ⏛ᕈ૕ߩ୥⵬ߣ⠨߃ࠄࠇߡ޿ࠆ‫ޕ‬ǴSR ߢ TN=70K એਅߢߩ㐳〒㔌⒎ᐨൻ߇ႎ๔
ߐࠇߡ޿ࠆ߇‫⏛ޔ‬᳇᭴ㅧߩ⹦⚦ߪ߹ߛࠊ߆ߞߡ޿ߥ޿‫ޕ‬ട߃ߡ‫ޔ‬TN એਅߢࠬࡇࡦߩᄢ߈ߥ
ំࠄ߉‫৻ޔߪߚ߹ޔ‬᭽ߢߥ޿ዪᚲ⏛႐ߩሽ࿷߇ᜰ៰ߐࠇߡ޿ࠆ‫ޕ‬ᚒ‫ ߪޘ‬Cu2OCl2 ߇㊂ሶࠬࡇࡦࡄࠗࡠࠢࡠࠕ෻ᒝ⏛ᕈ૕ߣ⠨߃ࠄࠇࠆߎߣߦ⥝๧ࠍᜬߜ‫ޔ‬35,37Cl-NMR ߣ㔖⏛႐ߢߩ
63,65Cu-NMR ࠍⴕߞߡ޿ࠆ‫ޕ‬63,65Cu-NMR ࠬࡍࠢ࠻࡞ࠃࠅ‫ޔ‬9T ߩౝㇱ⏛႐ߣ 25MHz ⒟ᐲߩ㔚႐൨㈩ߦࠃࠆಽⵚ߇᷹ⷰߐࠇߚ‫ޕ‬Cu ߩࡕ࡯ࡔࡦ࠻ߩᄢ߈ߐߪ৻᭽ߢ޽ࠅ‫⏛ޔ‬᳇᭴ㅧߪ⚿᥏᭴ㅧߩኻ⒓ᕈࠍ⎕ߞߡ޿ߥ޿ߎߣ߇ࠊ߆ߞߚ‫᧦ߥ߁ࠃߩߎޕ‬ઙࠍḩߚߔࠬࡇࡦ᭴
ㅧߪฝ࿑ߩࠃ߁ߥ 2 ⒳㘃߇⠨߃ࠄࠇࠆ‫ޕ‬෻ᐔⴕߥࠬࡇ
ࡦ᭴ㅧࠍขࠄߥ޿ߎߣߪࡈ࡜ࠬ࠻࡟࡯࡚ࠪࡦലᨐߦࠃ
ࠆߣ⠨߃ࠄࠇࠆ‫৻ޕ‬ᣇ‫ࡦࡇࠬޔ‬ᩰሶ✭๺₸ߪૐ᷷ߢ᷷
ᐲߦᲧ଀ߒ‫ޔߪࠇߎޔ‬ᄢ߈ߥࠬࡇࡦំࠄ߉ߩሽ࿷ࠍ␜
ໂߒ‫ޔ‬ǴSR ߢႎ๔ߐࠇߡ޿ࠆᄢ߈ߥំࠄ߉ߣኻᔕߔࠆ‫ ޕ‬࿑㩷 ྾㕙૕䉕਄䈎䉌⷗䈢䈫䈐䈱䉴䊏䊮᭴ㅧ2ࡄࠗࡠࠢࡠࠕ⏛ᕈ૕ &[5P1 ߩ㜞᷷ߦ߅ߌࠆ
ㆃ޿ࠬࡇࡦ࠳ࠗ࠽ࡒࠢࠬ
ᶏᷨ᦮ᧂ a ↰ઍᄢᔒ a દ⮮ື᣿ a ⷏ጊ᣽⑲ a ዊጊ↰᣿ a
೨Ꮉⷡ a ᧻ᐔ๺ਯ ba੩ㇺᄢቇ ੱ㑆ⅣႺቇ⎇ⓥ⑼ b ਻ᎺᎿᬺᄢቇ Ꮏቇ⎇ⓥ⑼E-mail:tomomi.k@aw2.ecs.kyoto-u.ac.jp
Dy2Sn2O7 ߪᄢ߈ߥ⏛᳇ࡕ࡯ࡔࡦ࠻ࠍ߽ߟ 4f 㔚ሶ♽ࠗࠝࡦ Dy3+߇྾㕙૕ߩ㗂ὐߦ૏⟎ߒ‫ޔ‬ߘߩ㗂ὐࠍ౒᦭ߒߡ⚿วߒߚࡄࠗࡠࠢࡠࠕᩰሶ⏛ᕈ૕ߢ޽ࠅ‫ࡦ࡚ࠪ࡯࡟࠻ࠬ࡜ࡈࡦࡇࠬޔ‬߇↢ߓࠆ‫ ߥ߁ࠃߩߎޕ‬f 㔚ሶ♽ࠗࠫࡦࠣဳ⏛ᕈ૕ߢߪ‫̥ޔ‬ㆃ޿ࠬࡇࡦ࠳ࠗ࠽ࡒ̢ࠢࠬ߇ߒ߫
ߒ᷹߫ⷰߐࠇߡ߅ࠅ‫ߩߣࡦ࡚ࠪ࡯࡟࠻ࠬ࡜ࡈޔ‬㑐ㅪ߇⼏⺰ߐࠇߡ޿ࠆ‫ޕ‬৻⥸ߦ‫ࡦࡇࠬޔ‬㑆⋧੕૞↪ߩᄢ߈ߐࠃࠅߪࠆ߆ߦ㜞޿᷷ᐲߢߪ‫৻╙ߢ↱⥄ߪࡦࡇࠬޔ‬ㄭૃߢߪቅ┙ߒߡ޿ࠆߣߺߥߖ‫ߩࡦ࡚ࠪ࡯࡟࠻ࠬ࡜ࡈޔ‬ലᨐ߽㕖Ᏹߦዊߐ޿‫ߥ߁ࠃߩߎޕ‬㜞᷷ߢߪ‫ࡦࡇࠬޔ‬㑆ߩ⋧੕૞↪ߦࠃࠅ‫ޔ‬਄ะ߈ࠬࡇࡦߣਅะ߈ࠬࡇࡦߩḰ૏㑆ߢᤨ㑆Ǽߢߩ㘧߮⒖ࠅ߇޽ࠆ⁁ᘒߣߥߞߡ߅ࠅ‫ޔ‬Ǽߪ J㧙㧝ߦᲧ଀ߔࠆ‫ޔߚ߹ޕ‬ᩭ⏛᳇౒㡆ߩℂ⺰߆ࠄ‫ޔ‬✭๺₸ T1㧙㧝ߪ⋧㑐ᤨ㑆ǼߦᲧ଀ߔࠆ‫ߩࡦ࡚ࠪ࡯࡟࠻ࠬ࡜ࡈޔߡߞ߇ߚߒޕ‬ലᨐ߇௛޿ߡ޿
ߥ޿㜞᷷ၞߢ‫ޔ‬T1㧙㧝ߪ J ߢ᳿߹ࠆ৻ቯ୯ࠍߣࠆߣ੍ᗐߐࠇࠆ‫ޕ‬ߣߎࠈ߇‫ޔ‬150K એ਄ߩ㜞᷷ၞߢ‫ޔ‬Sn ᩭߩ✭๺₸ T1-1 ࠍ᷹ቯߒߚߣߎࠈ‫ޔ‬᷷ᐲ߇ૐਅߔ
ࠆߦߟࠇߡ T1-1 ߇Ⴧടߔࠆߣ޿߁᷷ᐲଐሽᕈࠍ⷗಴ߒߚ‫ࡦ࡚ࠪ࡯࡟࠻ࠬ࡜ࡈޔߜࠊߥߔޕ‬ലᨐ߇௛޿ߡ޿ߥ޿᷷ᐲၞߢ᷷ᐲૐਅߦ઻޿‫ޔ‬ǼߩჇᄢ‫߇߉ࠄំߩࡦࡇࠬࠅ߹ߟޔ‬ㆃߊߥߞߡ޿ࠆߎߣ߇␜ߐࠇߚࠊߌߢ޽ࠆ‫ޕ‬ߒߚ߇ߞߡ‫ޔ‬f 㔚ሶࡄࠗࡠࠢࡠࠕᩰሶ⏛ᕈ૕ߢߒ߫ߒ᷹߫ⷰߐࠇࠆ̥ㆃ޿ࠬࡇࡦ࠳ࠗ࠽ࡒ
̢ࠢࠬߪ‫ߦࡦ࡚ࠪ࡯࡟࠻ࠬ࡜ࡈߡߴߔޔ‬Ꮻ⌕ߐࠇࠆࠊߌߢߪߥ޿ߣ⚿⺰ߢ߈ࠆ‫ࠇߘޕ‬એᄖߩലᨐ‫ౕޔ‬૕⊛ߦߪ‫ޔ‬ᒝ޿ࠗࠫࡦࠣᕈߩᓇ㗀߽ߎߩ̥ㆃ޿ࠬࡇࡦ࠳ࠗ࠽ࡒ̢ࠢࠬߦነਈߒ
ߡ޿ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬64

2㊂ሶࠬࡇࡦ♽߆ߏ߼ᩰሶ෻ᒝ⏛ᕈ૕ 4D%W5P( ߩ
0/4࡮034
↰ઍᄢᔒ C⷏ጊ᣽⑲ Cዊጊ↰᣿ Cદ⮮ື᣿ C೨Ꮉⷡ C ⍫㊁ߺߤࠅ Dዊ㊁ବ㓶 D↰ਛ⑲ᢙ D
C੩ㇺᄢቇੱ㑆㨯ⅣႺቇ⎇ⓥ⑼ D ᧲੩Ꮏᬺᄢቇ‛ℂቇኾ᡹'OCKN䋺JVCUJKTQ"HUGEUM[QVQWCELR
㊂ሶࠬࡇࡦ߆ߏ߼ᩰሶ෻ᒝ⏛ᕈ૕ߩၮᐩ⁁ᘒߪࠪࡦࠣ࡟࠶࠻⁁ᘒߢ޽ࠅ‫ޔ‬ၮᐩ⁁ᘒߣ࠻࡝ࡊ࡟࠶࠻ബ⿠⁁ᘒߣߩ㑆ߦࠬࡇࡦࠡࡖ࠶ࡊ߇޽ࠆߣផ᷹ߐࠇߡ޿ࠆ‫߼ߏ߆ߚ߹ޕ‬ᩰሶ෻ᒝ⏛ᕈ૕ߦߪࠬࡇࡦ㑆ߦࠫࡖࡠࠪࡦࠬࠠ࡯࡮቞⼱⋧੕૞↪߇௛޿ߡ޿ࠆߣ੍ᗐߐࠇߡ޿ࠆ‫ޕ‬੹࿁ᚒ‫ ߪޘ‬s = 1/2 ߩ⏛ᕈࠗࠝࡦ Cu2+߇߆ߏ߼ᩰሶࠍᒻᚑߒ෻ᒝ⏛ᕈ⊛ߦ⚿วߒߡ޿ࠆ
Rb2Cu3SnF12 ߩන⚿᥏ࠍ૶ߞߡ 1K㨪300K ߩ᷷ᐲၞߢ 19F-NMR ෸߮ 63,65Cu-NQR ᷹ቯࠍⴕߞߚ‫ޕ‬19F-NMR ࠬࡍࠢ࠻࡞ߪૐ᷷߹ߢ㕖Ᏹߦ㍈ߊ‫࡮ࡦࡇࠬߚ߹ޔ‬ᩰሶ✭๺₸ߪߤߩᩭ⒳ߦ߅޿ߡ߽৻᭽ߦᷫዋߒ‫ޔ‬1K ߦ⥋ࠆ߹ߢ⒎ᐨൻߪ⿠߈ߥ޿‫ޕ‬19F-NMR ࠬࡍࠢ࠻࡞ߦ߅
޿ߡૐ᷷ߢ⃻ࠇࠆⶄᢙߩࡇ࡯ࠢߩࠪࡈ࠻ߪ᷷ᐲ㒠ਅߣߣ߽ߦჇᄢߒ‫ߥ࠼࡯ࠟ࠶࠲ࠬޔ‬ᮮ⏛ൻ߇⊒↢ߒߡ޿ࠆߎߣ߇ࠊ߆ߞߚ‫⏛߇࠻ࡈࠪߩࠄࠇߎޕ‬႐ߦᲧ଀ߔࠆߎߣ߆ࠄ‫ޔ‬ᮮ⏛ൻߪ⏛႐⺃⿠ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬એ਄ߩߎߣ߆ࠄ‫ޔ‬ᚒ‫ߩࡦࡇࠬߡ޿߅ߦ♽ߩߎߪޘ‬㊂ሶᕈߣࠫࡖࡠࠪࡦࠬࠠ࡯࡮቞⼱⋧੕૞↪ߦࠃࠅࠬ࠲࠶ࠟ࡯࠼ߥᮮ⏛ൻ߇⊒↢ߔࠆߎߣࠍ᣿ࠄ߆ߦ
ߒߚ‫࡮ࡦࡇࠬޕ‬ᩰሶ✭๺₸߆ࠄᓧࠄࠇߚࠬࡇࡦࠡࡖ࠶ࡊߩᄢ߈ߐߪ 50K ߢ޽ࠅ‫⏛ޔ‬ൻ₸߆ࠄᓧࠄࠇߡ޿ࠆࠬࡇࡦࠡࡖ࠶ࡊ 20K ߣ⇣ߥࠆ୯ߢ޽ࠆ߇‫ߪࠇߎޔ‬ബ⿠⁁ᘒߦ߅ߌࠆಽᢔߦ
ࠃࠆ߽ߩߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬2᦭ᯏਃⷺᩰሶ /QVV ⛘✼૕ 'V/G5D=2F FOKV ? ߩ㊂ሶࠬࡇࡦᶧ૕⁁ᘒߦ߅ߌࠆኻ⒓ᕈߩ⎕ࠇਭ଻↰ ஜᦶ a, દ⮮ ື᣿ a, ጊਅ ๺਽ a, ዊጊ↰ ᣿ a, ⷏ጊ ᣽⑲ a,೨Ꮉ ⷡ a, ਭ଻ ๺਽ b, ጊᧄ ᶈผ c, ട⮮␞ਃ ca ੩ᄢੱ㑆࡮ⅣႺቇ⎇ⓥ⑼, b ᧲ർᄢℂቇ⎇ⓥ⑼, c ℂൻቇ⎇ⓥᚲ

E-mail㧦k.tatsuro@kt5.ecs.kyoto-u.ac.jp
 ㊂ሶᶧ૕ߪ㊄ዻਛߩ㔚ሶ߿ࡋ࡝࠙ࡓߦ߅ߌࠆ⿥વዉ߿⿥ᵹേߩࠃ߁ߦ‫ޔ‬ฎౖജቇ߆ࠄߪ
੍ᦼߢ߈ߥ޿ᣂᄸߥኻ⒓ᕈߩ⎕ࠇ߇޽ࠆ‫ޕ‬ㄭᐕ‫ޔ‬㊂ሶࠬࡇࡦᶧ૕ߣ๭߫ࠇࠆᣂߚߥ㊂ሶᶧ૕߇ࡈ࡜ࠬ࠻࡟࡯࠻ࠬࡇࡦ♽ߢ⊒⷗ߐࠇߡ޿ࠆ‫ࡦࡇࠬߩߘޕ‬ᶧ૕⁁ᘒߦ߅޿ߡ‫ޔ‬ᣂᄸߥኻ⒓ᕈߩ⎕ࠇ߇޽ࠆߩ߆ߤ߁߆ߪ‫ޔ‬ᄢ߈ߥ㑐ᔃߩ৻ߟߢ޽ࠆ‫ߢߎߘޕ‬ᚒ‫ޔߪޘ‬Pd(dmit)2 ಽሶ ߇ ᒝ ߊ ੑ ㊂ ൻ ߒ ߡ ࠬ ࡇ ࡦ 1/2 ࠍ ᜬ ߜ ਃ ⷺ ᩰ ሶ ࠍ ⚵ ࠎ ߛ ᦭ ᯏ Mott ⛘ ✼ ૕
EtMe3Sb[Pd(dmit)2]2 ߦ߅޿ߡ 13C ᩭߩ NMR ታ㛎ࠍⴕ޿‫ࡦࡇࠬޔ‬-ᩰሶ✭๺₸ T1-1 ߅ࠃ߮౒㡆ࠬࡍࠢ࠻࡞ߩ᷹ቯࠍⴕߞߚ‫⏛ߪ⾰‛ߩߎޕ‬ൻ᷹ቯ߆ࠄ੤឵⋧੕૞↪ J ߪ 220K㨪250K
ߣ⷗Ⓧ߽ࠄࠇߡ޿ࠆ‫ ߪ࡞࠻ࠢࡍࠬޕ‬20mK ߦ⥋ߞߡ߽⏛᳇⒎ᐨߦ․᦭ߩᕆỗߥ✢᏷ߩჇᄢߪ᷹ⷰߐࠇߕ‫ޔ‬㊂ሶࠬࡇࡦᶧ૕⁁ᘒ߇ታ⃻ߒߡ޿ࠆ‫ ޕ‬T1-1 ߩ᷷ᐲᄌൻߦߪ⏛႐ 7.6T ߢ
1.0K‫ޔ‬1.8T ߢ 0.6K ߦࠠࡦࠢ߇ሽ࿷ߔࠆߎߣࠍ⊒⷗ߒߚ‫ߪࠢࡦࠠߩߎޕ‬ੑᰴߩ⋧ォ⒖ߢ޽ࠆߣ⠨߃ࠄࠇ‫ޔ‬ኻ⒓ᕈߩ⎕ࠇ߇␜ໂߐࠇࠆ߇‫ޔ‬ォ⒖ߩ೨ᓟߢฎౖ⊛ߥ⏛᳇⒎ᐨൻߩᝄࠆ⥰޿ߪ⷗ࠄࠇߥ޿‫⚿ߩࠄࠇߎޕ‬ᨐ߆ࠄ‫ࡦࡇࠬߩ⾰‛ߩߎޔ‬ᶧ૕⁁ᘒ߇ᣂᄸߥኻ⒓ᕈߩ⎕ࠇࠍ઻ߞߚᣂߚߥ㊂ሶ⁁ᘒࠍታ⃻ߒߡ޿ࠆߩߢߪߥ޿߆ߣ⠨߃ࠄࠇࠆ‫ޕ‬65

2ࡄࠗࡠࠢࡠࠕဳࡈ࡜ࠬ࠻࡟࡯࠻⏛ᕈ૕0K 1* %Nߩㅙᰴ⋧ォ⒖㩷૒⮮ⴐ৻ C㧘ዊጊ↰᣿ C㧘ች↰㚅❱ C㧘⷏ጊ᣽⑲ C㧘દ⮮ື᣿ C㧘೨Ꮉⷡ C㧘㈕ᣩశ Da ੩ㇺᄢቇ

ੱ㑆࡮ⅣႺቇ⎇ⓥ⑼‫ޔ‬b ૒⾐ᄢቇ ℂᎿቇㇱ

E-mail㧦manochori@baka.mbox.media.kyoto-u.ac.jp ⋧੕૞↪߇┹วߔࠆࡈ࡜ࠬ࠻࡟࡯࠻⏛ᕈ૕ߦ߅޿ߡߪ‫ޔ‬㐳〒㔌⒎ᐨߣࠬ
ࡇࡦំࠄ߉⁁ᘒ߇౒ሽߔࠆᣂᄸߥ⏛᳇⁁ᘒ߇ߒ߫ߒ᷹߫ⷰߐࠇ⥝๧ࠍᜬߚࠇߡ޿ࠆ‫ࠗࡄޕ‬ࡠࠢࡠࠕဳᩰሶࠍᜬߟ Ni2(OH)3Cl ߪࡈ࡜ࠬ࠻࡟࡯࡚ࠪࡦߦ⿠࿃ߔࠆᄸᅱߥ⏛᳇⒎ᐨ⁁ᘒࠍᜬߞߡ߅ࠅ‫⸃ࠍࠇߎޔ‬᣿ߔࠆߚ߼ߦ NMR ታ㛎ࠍⴕߞߡ޿ࠆ‫⚿ߩߘޕ‬ᨐએਅߩࠃ߁ߥߎ
ߣ߇ಽ߆ߞߚ‫ޕ‬4K એਅߢߪ‫ޔ‬T1-1 ߪᕆỗߦᷫዋߔࠆߣߣ߽ߦ‫ޔ‬NMR ࠬࡍࠢ࠻࡞ߩ᏷߇ᄢ߈ߊჇᄢ
ߔࠆߎߣ߆ࠄㅢᏱߩ⏛᳇⒎ᐨ߇⿠ߎߞߡ޿ࠆࠃ߁
ߦ⷗߃ࠆ‫৻ޕ‬ᣇ 20K ઃㄭ߆ࠄ T1-1 ߦ࿑ߩࠃ߁ߦ
㐳޿ᚑಽ߇⃻ࠇࠆ‫⏛ޕ‬ൻ₸ߩ᷷ᐲᓸಽߦ߽ዊߐߥ
⇣Ᏹ߇޽ࠆߎߣ߇ಽ߆ࠅ‫ޔ‬20K ઃㄭߦ߽૗ࠄ߆ߩ
ォ⒖߇޽ࠆߎߣࠍᣂߚߦ⷗಴ߒߚ‫ߎߡߞ߇ߚߒޕ‬ߩ‛⾰ߪ TN1=17K, TN2=4.0K ߢㅙᰴ⋧ォ⒖߇޽
ࠆߎߣ߇ಽ߆ߞߚ‫ ߒ߆ߒޕ‬4K <T <20K ߢࠬࡍࠢ࠻࡞᏷ߦߪ⇣Ᏹ߇ήߊ‫ޔ‬ਛ㑆⋧ߦߪࡈ࡜ࠬ࠻࡟࡯
࡚ࠪࡦߦ⿠࿃ߔࠆㆃ޿ំࠄ߉߇ሽ࿷ߔࠆߣ⠨߃ࠄ
ࠇࠆ‫ޕ‬

࿑

2H 㔚ሶ♽ਃⷺᩰሶ :; ဳ෻ᒝ⏛ᕈ૕ 70K$ ߩㇱಽή⒎ᐨ⁁ᘒች↰㚅❱ A‫ޔ‬ዊጊ↰᣿ A‫⷏ޔ‬ጊ᣽⑲ A‫ޔ‬દ⮮ື᣿ A‫ޔ‬೨Ꮉⷡ A‫᧘ޔ‬ᓼᣂ B‫ޔ‬⧐⾐⧐▸ CA ੩ㇺᄢቇ ੱ㑆࡮ⅣႺቇ⎇ⓥ⑼ ⋧㑐ⅣႺቇኾ᡹
B ᧲ർᄢ㊄⎇‫ޔ‬C ේሶജᯏ᭴

E-mail㧦miyata.k@fs2.ecs.kyoto-u.ac.jp
 UNi4B ߪ⏛ᕈࠍᜂ߁ 5f 㔚ሶࠍ߽ߟ U ࠗࠝࡦ߇ਃⷺᩰሶࠍᒻᚑߒ‫ޔ‬෻ᒝ⏛ᕈ⋧੕૞↪߇௛޿ߡ޿ࠆᐞ૗ቇ⊛ࡈ࡜ࠬ࠻࡟࡯࠻⏛ᕈ૕ߢ޽ࠆ‫࡞࡯ࡀޕ‬᷷ᐲ TN=20 K ߦ߅޿ߡ‫ޔ‬U ࠗࠝ
ࡦߩ 2/3 ߇᷵⁁ߩ෻ᒝ⏛ᕈ⒎ᐨࠍ⿠ߎߒ‫ޔ‬ᱷࠅߩ 1/3 ߩࡕ࡯ࡔࡦ࠻ߪߘߩ᷵ߩਛᄩߦᏱ⏛ᕈ⁁ᘒߣߒߡሽ࿷ߔࠆߎߣ߇᣿ࠄ߆ߦߥߞߡ޿ࠆ ‫ޕ‬ ࡀ࡯࡞᷷ᐲㄭறߢߩ‛ℂ㊂ߦ⃻ࠇࠆ⇣Ᏹࠍ␜ߔᜰᢙߢ޽ࠆ⥃⇇ᜰᢙǪࠍ᳞߼ࠆߚ߼ߦ NMR ࠬࡍࠢ࠻࡞ߩ✢᏷ߩ᷷ᐲᄌൻࠍ⹦⚦ߦ᷹ቯߒߚ‫ޕ‬࿑ 1 ߩታ✢ߪ⥃⇇ᜰᢙǪࠍ 0.38 ߣߒߚᤨߩ߽ߩߢ޽ࠅ‫ޔ‬
UNi4B ߪߎߩ୯߆ࠄⓍጀ XY ဳਃⷺᩰሶࠣ࡞࡯ࡊ 2 ߣ޿߁ࡕ࠺࡞ߦዻߔࠆߣ⠨߃ࠄࠇࠆ߇‫ޔ‬1/T1 ߩ⊒ᢔߪ㕖Ᏹߦᒝߊ‫ޔ‬ᒙ޿৻ᰴォ⒖ߢ޽ࠆ੐ࠍ␜ໂߒߡ޿ࠆ‫ޕ‬ ߹ߚ‫ޔ‬NMR ࠬࡍࠢ࠻࡞ߣ 1/T1 ߆ࠄ 1.3 K ߢ૗ࠄ߆ߩ⏛᳇⒎ᐨ߇⿠ߎࠅ‫ޔ‬0.8 K એਅߢߪ T1T =const.ࠍ␜ߒߡ޿ࠆ੐߇ᣂߚߦࠊ߆ߞߚ‫ޕ‬66

2᪽ሶᩰሶ㌃㉄ൻ‛ 5TZ%CZ%W1 ߩ࿶ജ⺃⿠⿥વዉ⮮ේ ⋥᮸
੩ㇺᄢቇᄢቇ㒮ੱ㑆࡮ⅣႺቇ⎇ⓥ⑼E-mail㧦naoki@fujiwara.h.kyoto-u.ac.jp
 ᪽ሶᩰሶ㌃㉄ൻ‛ Sr2Ca12Cu24O41㧔ਅ࿑㧕ߪ 3 ਁ᳇࿶એ਄ߩ࿶ജਅߢ⿥વዉߦߥࠆ‛⾰ߣߒߡ⍮ࠄࠇ
Ambient Pressure
3.5GPa3.8GPaߡ޿ࠆ‫ ߩ⾰‛ߩߎޕ‬3.8 ਁ᳇࿶߹ߢߩᩭ⏛᳇౒㡆ࠍⴕߞߚ‫ޕ‬ฝ࿑ߦ✭๺₸ (1/T1) ߩ᷷ᐲଐሽᕈࠍ␜ߔ‫ޕ‬

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1/T 1 (sec )H // c࠶ࡊ߇᷹ⷰߐࠇࠆ‫ޕ‬࿶
ജଐሽᕈߦ

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1)XMLZDUDHWDO80  5  2.C(G#U1Z(Z㧔Z㧕ߩ㜞࿶ਅ 0/4
ਛ㊁㆐਽ㄖᏈஜ৻㇢, ⮮ේ⋥᮸, ጟ↰ብᚑ A,B䋬㜞ᯅඳ᮸ A,B䋬␹ේ㓁৻ B,C㧘ᐔ㊁ᱜᶈ D,E㧘⚦㊁⑲㓶 C,D,E
੩ᄢੱⅣ䋬ᣣᧄᢥℂ A䋬⑼ᛛᯏ᭴ TRiPB, ᧲Ꮏᄢ䊐䊨䊮䊁䉞䉝 C,⑼ᛛᯏ᭴ ERATO-SORSTD䋬᧲Ꮏᄢᔕ䉶䊤⎇ E㩷 㩷 㩷E-mail㧦ms-ghost@white.mbox.media.kyoto-u.ac.jp㋕♽㜞᷷⿥વዉ૕ߪ‫ޔ‬2008 ᐕ 2 ᦬ߦ᧲੩Ꮏᬺᄢቇߩ⚦㊁ࠣ࡞࡯ࡊ߇ LaFeAsO1-xFx ߢ
Tc=26K ߩ⿥વዉࠍ⊒⷗ߒߚߎߣࠍᄾᯏߦ㕖Ᏹߦᵈ⋡ߐࠇߡ߅ࠅ‫⃻ޔ‬࿷ߢߪ㌃㉄ൻ‛⿥વዉ૕ࠍ㒰ߊ⿥વዉ૕ߩਛߢ‫ᦨޔ‬㜞ߩ Tc㧔㨪56K㧕ࠍ␜ߔ‫ߩߘޕ‬ਛߢ߽ LaFeAsO1-xFx ߪ࿶ജࠍ߆ߌࠆߎߣߢ‫ޔ‬㜞޿ Tc(㨪43K)߇ᓧࠄࠇࠆ‛⾰ߢ޽ࠆ‫ޕ‬1ᚒ‫ޔߪߢࡊ࡯࡞ࠣߩޘ‬࿶ജߦࠃࠆ Tc ਄᣹ߩේ࿃ࠍតࠆߚ߼ߦ‫ޔ‬43ߩ࿶ജਅߢߩ 75As-NMR ᷹ቯࠍⴕߞߡ޿ࠆ‫ޕ‬ฝ࿑ߪ࿶ߦࠃࠅ‫ ⚛࠶ࡈޔ‬14%࠼࡯ࡊߦ߅޿ߡߪ‫⁁ޔ‬ᘒኒᐲߩჇട߇⷗

-1

0.1

-1

࿶ജਅࠍ฽߻ฦ⚵ᚑߦ߅ߌࠆ✭๺₸ߩ᷷ᐲᄌൻࠍ␜ߒߡ޿ࠆ‫ޕ‬ട

2

1/T1T ( s K )LaFeAsO1-xFx

Tc
7
6
5

7
6
5
4
3

F 0% 0GPa
F 5% 0GPa
F 5% 3GPa
F 8% 0GPa
F 8% 3GPa
F 14% 0GPa
F 14% 3GPa
F 14% 3.7GPa2ࠄࠇ‫ޔ‬Tc ߪᄢ߈ߊჇᄢߒߚ‫ࡊ࡯࠼⚛࠶ࡈޕ‬㊂ࠍᷫࠄߔߦߟࠇߡ⏛᳇ំࠄ߉ߪᒝ߹ࠅ‫ ⚛࠶ࡈޔ‬5%࠼࡯ࡊߦ߅޿ߡߪ‫ޔ‬ട࿶ߦࠃࠆ⏛᳇ំࠄ߉ߩჇട߇ߪߞ߈ࠅ⷗ࠄࠇࠆ߇‫ޔ‬Tc ߩჇടߪዊߐ޿‫ࠇߎޕ‬

0.01
7
6
5
4
3

50

100
T (K)

150

200

ߪ⏛᳇ំࠄ߉߇ᄢ߈޿ߣ⿥વዉߩ⊒㆐߇ᛥ೙ߐࠇࠆߎߣࠍ␜ߒߡ޿ࠆ[1,2]‫ޕ‬[1] K. Tatsumi, et al., JPSJ 78 (2009) 023709  [2] T. Nakano, et al., arXiv:0909.0318(2009)67

2Development of MRI Microscope਄㊁ ᥓᒄ a, ᳓ፒ 㓉㓶 b,c, ᧻ේ ᣿ ba ੩ㇺᄢቇ

කቇ⎇ⓥ⑼ ੱ㑆ஜᐽ⑼ቇ♽ኾ᡹b ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯c ⼾↰ℂൻቇ⎇ⓥᚲ

E-mail㧦ueno@hs.med.kyoto-u.ac.jp
We have been developing an ultra high resolution MRI, “MRI microscope”[1] for ultra lowtemperature physics, by using lower temperature, higher magnetic field and stronger magnetic field
gradients. In these environments, shorter pulse interval is required so as to suppress spin diffusion
effect. Besides, at low temperature, dipole field becomes large because of strong magnetization. If
dipole field is inhomogeneous, multiple spin echoes (MSE) are generated. High magnetic
homogeneity is needed so as not to generate MSE. We constructed the MRI Microscope using amagnetic ¿eld of 7.2 T, with tri-axial magnetic ¿eld gradients of 2.0 T/m, Helmholtz transmitter coilof 5 mm diameter and 2.5 mm. We visualized the pure liquid 3He in a 230 µm diameter tube to study
the effect of nonlinearity on the MRI Microscope at low temperature and in high magnetic ¿elds. An
MRI image was obtained at 0.22 MPa, 1 K with 1.8 µm × 1.8 µm pixel size. At 65 mK, the MRI
image became more blurred. We speculate that it was caused by large spin diffusion and nonlinearity.
We will apply this MRI microscope to image the vortex lattice of rotating superfluid 3He-A phase.
[1] M. Hachiya et al., J. Low Temp. Phys. 158, 697 (2010).

26/4+ 㗼ᓸ㏜ࠍ↪޿ߚࡔ࠳ࠞߩ & นⷞൻ㊄ጊ ⠍৻㇢ a, ᪀ේ ⥶ a, ਄㊁ ᥓᒄ a, ᶆጊ ᘕ৻ b,ᵄᄙ㊁ ⋥਽ c, ᧖ᧄ ⋥ਃ a, ⑔ጊ ⑲⋥ b,a ੩ㇺᄢቇ

කቇ⎇ⓥ⑼ ੱ㑆ஜᐽ⑼ቇ♽ኾ᡹b ੩ㇺᄢቇ

කቇ⎇ⓥ⑼ 㜞ᰴ⣖ᯏ⢻✚ว⎇ⓥ࠮ࡦ࠲࡯a ੩ㇺᄢቇ

Ꮏቇ⎇ⓥ⑼ ᯏ᪾ℂᎿቇኾ᡹

E-mail㧦ueno@hs.med.kyoto-u.ac.jp ⣄ᬁേ‛ߩࡕ࠺࡞↢‛ߢ޽ࠆࡔ࠳ࠞ╬ߩዊဳߩ↢‛ߩ㜞⸃௝ᐲߢߩ᠟௝߇น⢻ߥ /4+ 㗼ᓸ㏜ߩ㐿⊒ࠍⴕߞߡ޿ࠆ‫ޕ‬㜞޿ⓨ㑆⸃௝ᐲࠍ㆐ᚑߔࠆߚ߼ߦߪ‫ޔ‬㜞޿ାภ㔀㖸Ყ 50 ࠍᓧࠆߎߣ
߇㊀ⷐߢ޽ࠆ‫ޔߢߎߘޕ‬6 ࡏࠕᓘ OO ߩ㕒⏛႐ࡑࠣࡀ࠶࠻ࠍ↪޿‫ޔ‬0/4 ାภᒝᐲࠍ㜞߼ߚ⁁ᘒߢ /4+ 㗼ᓸ㏜ߩࡊࡠ࡯ࡉߩ㐿⊒ࠍⴕߞߡ޿ࠆ‫৻╙ޕ‬Ბ㓏ߣߒߡ‫ޔ‬㜞޿ 50 ߇ᓧࠄࠇࠆ
ౝᓘ OO ߩ࠰࡟ࡁࠗ࠼ဳߩㅍฃାࠦࠗ࡞ߣᐔ㕙ဳߩ Z[\ ᣇะߩࠣ࡜࠺ࠖࠛࡦ࠻ࠦࠗ࡞ࠍ৻૕ဳ
ࡊࡠ࡯ࡉߣߒ‫〒⟎⸳ߩ࡞ࠗࠦ࠻ࡦࠛࠖ࠺࡜ࠣޔ‬㔌ࠍ❗߼ᒝ޿⏛႐൨㈩ࠍශടߢ߈ࠆ⸳⸘ߣߒߚ‫ޕ‬ߎࠇߦࠃࠅ‫ޔ‬PUGE ⒟ᐲߢ  ゲᣇะߦ 6O ⒟ᐲߩ⏛႐൨㈩ࠍដߌࠆߎߣ߇น⢻ߣߥߞߚ‫ޕ‬/4+㗼ᓸ㏜ࠍ↪޿ߚࡔ࠳ࠞߩ᠟௝ታ㛎ߦ߅޿ߡ‫↹ޔ‬௝ⷞ㊁߇ OOOOOO‫ࠨ࡞࠮ࠢࡏ ޔ‬ࠗ࠭߇ PO  ߢ޽ࠆ㜞⸃௝ᐲߩ↹௝߇ᓧࠄࠇߡ޿ࠆ‫ߩߎޕ‬႐วߩ᠟௝ᤨ㑆ߪ  ᤨ㑆ߢ޽ࠆ‫ޕ‬
ߎߩ /4+ 㗼ᓸ㏜ࠍ↪޿ߡ‫ޔ‬2 ࠟࡦᛥ೙ㆮવሶࡁ࠶ࠢࠕ࠙࠻ࡔ࠳ࠞߣࡢࠗ࡞࠼࠲ࠗࡊߣߩᒻᘒᲧセࠍⴕߥ޿‫⸃ߩࡓ࠭࠾ࠞࡔ⃻⊒ߩࡦࠟޔ‬ᨆߦ⌕ᚻߒߡ޿ࠆ‫ޕ‬዁᧪⊛ߦߪ /4+ 㗼ᓸ㏜㕖ಓ⚿∛ℂᬌᩏ╬߳ߩᔕ↪߽⠨߃ߡ޿ࠆ‫ޕ‬68

2ᣣᧄ⺆Უ⺆⹤⠪ߦ߅ߌࠆᗧ๧⊛ਇ⺞๺ᢥߩಣℂㆊ⒟⨹ᧁ ⒤ผ a, ᧻ᨋ Ả a,b , ౷᳗ ᷤ b㧘ධ ජ዆ b㧘ᧁౝ 㓉⵨ b㧘
᧻ᯅ ⋿↢ c,⟤㚍 ㆐຦ c, ⑔ጊ ⑲⋥ c, ਃ⼱ ┨ a,ba ੩ㇺᄢቇකቇㇱ ଻ஜቇ⑼ ૞ᬺ≮ᴺቇኾ᡹b ੩ㇺᄢቇ

කቇ⎇ⓥ⑼ ੱ㑆ஜᐽ⑼ቇ♽ኾ᡹ ࡝ࡂࡆ࡝࠹࡯࡚ࠪࡦ⑼ቇࠦ࡯ࠬ

c ੩ㇺᄢቇ

කቇ⎇ⓥ⑼㒝ዻ 㜞ᰴ⣖ᯏ⢻✚ว⎇ⓥ࠮ࡦ࠲࡯

E-mail㧦matsubayashi@hs.med.kyoto-u.ac.jp ᗧ๧⊛ߦਇ⺞๺ߥᢥࠍⷞⷡ⊛ߦ๒␜ߔࠆߣ⚂ 400 ࡒ࡝⑽ᓟߦᏀ஥㗡⪲ࠍਛᔃߣߒߚ㗔ၞߢ⣖ᵄ࡮⣖⏛႐ߩᄌൻ߇⿠ߎࠆ㧚ߎߩᚑಽߪ N400 ߣ๭߫ࠇߡ߅ࠅ㧘ᢥߩᗧ๧⊛ߥಣℂߦ㑐ࠊࠆ⣖ᵴേߣߒߡᵈ⋡ߐࠇߡ޿ࠆ㧚ᧄ⎇ⓥߢߪߎߩࠃ߁ߥೝỗࠍ೑↪ߒ㧘ᣣᧄ⺆Უ⺆⹤⠪ߦ߅ߌࠆᣣᧄ⺆ߩᗧ๧ಣℂㆊ⒟ߩ․ᓽࠍ᣿ࠄ߆ߦߔࠆߎߣࠍ⋡⊛ߣߒߚ㧚8 ฬߩஜᏱߥ
ᣣᧄ⺆Უ⺆⹤⠪ߦኻߒ㧘⥄ὼߥᢥ㧔଀㧦›߇ߏ㘵ࠍ㘩ߴߚ㧕ߣᗧ๧⊛ਇ⺞๺ᢥ㧔଀㧦›߇›ዊደࠍ㘩ߴߚ㧕ࠍߘࠇߙࠇ 120 ᢥߕߟ๒␜ߒߚ㧚⣖⏛႐⸘᷹ߦߪ㜞ᰴ⣖ᯏ⢻✚ว⎇ⓥ࠮
ࡦ࠲࡯ߦ⸳⟎ߐࠇߡ޿ࠆ 306 ࠴ࡖࡦࡀ࡞⣖⏛࿑⸘ࠍ↪޿ߚ㧚8 ฬਛ 6 ฬߦߡᏀඨ⃿஥㗡⪲๟ㄝߩ࠮ࡦࠨ࡯ߢ N400 ߣ⠨߃ࠄࠇࠆᚑಽ߇ᓧࠄࠇ㧔ᐔဋ㗂ὐẜᤨ㧦455 ࡒ࡝⑽㧕㧘߁ߜ
4 ฬߢ᧦ઙࠍḩߚߔ㔚ᵹḮ߇ផቯߢ߈ߚ㧚߹ߚ 8 ฬਛ 5 ฬߦߡฝඨ⃿ߦ߽ห᭽ߥᚑಽ߇ᓧ
ࠄࠇ㧔ᐔဋ㗂ὐẜᤨ㧦440 ࡒ࡝⑽㧕㧘5 ฬోߡߢ㔚ᵹḮ߇ផቯߢ߈ߚ㧚ࡈࠖࡦ࡜ࡦ࠼⺆࡮⧷⺆ߢߪ N400 ᵴേߪᏀඨ⃿ఝ૏ߢ޽ࠆߎߣ߇␜ߐࠇߡ޿ࠆ㧔Helenius et al. 1998㧘
Halgren et al. 2002㧕߇㧘ᣣᧄ⺆ߢߪඨ⃿Ꮕ߇ዊߐ޿น⢻ᕈ߇␜ໂߐࠇߚ㧚2⣖⏛࿑߅ࠃ߮㗡⊹਄⣖ᵄ⸘᷹ߦ߅ߌࠆߡࠎ߆ࠎᕈ᡼㔚ߩᒻᘒ․ᕈ
ᮮጊ ᵗᐔ a, b)㧘᧻ᧄ ℂེ c)㧘੗ౝ ⋓㆙ c)㧘᧻ᯅ ⋿↢ b)㧘ਃ࿡ ା໪ a) 㧘ᳰ↰ ᤘᄦ c)㧘㐳ፃ 㓉 d) 㧘⑔ጊ ⑲⋥ b)㧘ችᧄ ੨ a)੩ㇺᄢቇᄢቇ㒮කቇ⎇ⓥ⑼a)⣖␹⚻ᄖ⑼ b) 㜞ᰴ⣖ᯏ⢻✚ว⎇ⓥ࠮ࡦ࠲࡯ c) ⥃ᐥ␹⚻ቇd)ᧅᏻක⑼ᄢቇකቇㇱ␹⚻⑼ቇ⻠ᐳ
Email: yotch@kuhp.kyoto-u.ac.jp㨇⋡⊛㨉ߡࠎ߆ࠎᕈ᡼㔚ߩ⣖⏛࿑㧘⣖ᵄ⸘᷹ߢߩᜬ⛯ᤨ㑆ࠍᲧセߒ㧘ߡࠎ߆ࠎᕈ᡼㔚ߩ․ᕈࠍ᣿ࠄ߆ߦߔࠆ㧚㨇∝଀㨉⣖⏛࿑㧘⣖ᵄߩหᤨ⸘᷹ࠍⴕߞߚ㔍ᴦᕈߡࠎ߆ࠎ∝଀ߢ㧘⣖ᵄ਄ߡࠎ߆ࠎᕈ᡼㔚ࠍ㗫❥ߦ⹺߼ߚ7∝଀㧚㨇ᣇᴺ㨉ࡊ࡜࠽࡯ဳࠣ࡜࠺ࠖࠝࡔ࡯࠲࡯
(GRA)204ch㧘ࡑࠣࡀ࠻ࡔ࡯࠲࡯(MAG)102chߦࠃࠆ⣖⏛႐⸘᷹ࠍ19chߩ⣖ᵄ(EEG)⸘᷹ߣห
ᤨߦⴕ޿㧘GRA㧘MAG㧘EEGోߡߢߡࠎ߆ࠎᕈ᡼㔚ߣ್ቯߐࠇࠆ߽ߩࠍㆬቯ㧚ߘࠇߙࠇߩ
ᝄ᏷ᦨᄢߩ࠴ࡖࡦࡀ࡞ߢߩᜬ⛯ᤨ㑆߅ࠃ߮ࡇ࡯ࠢߩᢙࠍ⸘᷹ߒߚ㧚㨇⚿ᨐ㨉GRA㧘MAG㧘
EEGߩᐔဋ୯ߪ㧘102ms㧘104ms㧘123msߣ⣖⏛࿑ߢߩᜬ⛯ᤨ㑆ߪߣ߽ߦ⣖ᵄࠃࠅ᦭ᗧߦ⍴ߊ㧘߹ߚ㧘⣖⏛࿑਄ߩߡࠎ߆ࠎᕈ᡼㔚ߪ㧘᦭ᗧߦEEGࠃࠅ߽ᄙ⋧ᕈߢ޽ߞߚ㧚㨇⠨ኤ㨉⣖⏛࿑ߢߪ㧘⣖ߩ๟࿐⚵❱ߩ㔚ዉᕈߩ⋧㆑ߦࠃࠆshuntലᨐߩᓇ㗀ࠍฃߌߕ㧘ࠃࠅዪᚲߩᵴേ㧘߹ߚ⣖Ḵߩᵴേࠍ෻ᤋߒ߿ߔߊ㧘᡼㔚ߩᜬ⛯ᤨ㑆߇⣖ᵄࠃࠅ⍴޿ߣ⠨߃ࠄࠇߚ㧚69

2(G/Q0 ߩ㕖ࡈࠚ࡞ࡒᶧ૕⊛᜼േኹỈ ᘕ␭ a, ๺᳋ ೰ a, ↰⇌ ศ⸘ a, ਛ᧛ ⵨ਯ a, ㆏ጟ ජၔ b,ศ᧛ ৻⦟ b, ૒⮮᩵テ c, ㊄㆏ ᶈ৻ c, 㜞ᯅ ᘮ♿ da ੩ᄢ㒮Ꮏ, b ੩ᄢ㒮ℂ, c ᧲ᄢ‛ᕈ⎇, d ౓⋵ᄢ㒮‛⾰ℂ

E-mail㧦yuzukko@089583.mbox.media.kyoto-u.ac.jp
 ㆫ⒖㊄ዻ⓸ൻ‛ Fe3Mo3N ߪ‫ޔ‬ૐ᷷߹ߢ⏛᳇⒎ᐨࠍ↢ߓߥ޿‫ޔ‬Ⴧᒝߐࠇߚࡄ࠙࡝Ᏹ⏛ᕈ૕ߢ޽ࠆ‫ޕ‬Ꮺ⏛₸ߪᒝߊ᷷ᐲߦଐሽߒ‫ޔ‬75K ઃㄭߦࡉࡠ࡯࠼ߥࡇ࡯ࠢࠍᜬߟ‫ޕ‬㜞᷷ㇱߪ
Curie-Weiss ೣߦᓥ޿‫ࠬࠗࡢޔ‬᷷ᐲߪ 2K ߣ᳞߼ࠄࠇࠆ‫ޔߪ⾰‛ߩߎޔߚ߹ޕ‬Fe ࠍ௖߆ߦCo ߢ⟎឵ߔࠆߎߣߢ‫ޔ‬ᒝ⏛ᕈ⁁ᘒ߇⃻ࠇࠆ[1]ߎߣ߆ࠄ‫ޔ‬ૐ޿ࡢ᷷ࠗࠬᐲߣ޽ࠊߖߡ‫ޔ‬ᒝ⏛ᕈ㊂ሶ⥃⇇ὐㄭறߩ‛⾰ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬Fe3Mo3N ߩᲧᾲߣ‫ޔ‬㔚᳇ᛶ᛫ߩ᷹ቯࠍⴕ޿‫ޔ‬ૐ᷷ߦ߅޿ߡ㕖ࡈࠚ࡞ࡒᶧ૕⊛ߥᝄࠆ⥰޿ࠍ᷹ⷰߒߚ‫ޕ‬ ࿑ߪ‫ޔ‬Ყᾲߩ᷷ᐲଐሽᕈࠍή⏛႐ਅߣ 14Tਅߦߟ޿ߡ᷹ቯߒߚ߽ߩߢ޽ࠆ‫ޕ‬ή⏛႐ਅߢߪ C/T ߦ 7K(࿑ਛ T*)ઃㄭࠃࠅ-logT ⊛ߥ⊒ᢔ߇⏕⹺ߢ߈ࠆ‫ ߚ߹ޕ‬14T ߩ⏛႐ශടߦࠃ
ࠅࡈࠚ࡞ࡒᶧ૕⊛ᝄࠆ⥰޿ߦᄌൻߒߡ޿ࠆ‫ޕ‬ή⏛႐ਅ-14T ਅߢߩ C/T ߩ᷷ᐲଐሽᕈ
[1] T. J. Prior et al., J. Mater. Chem. 14 (2004) 3001.


2ࠢ࡜ࠬ࠲ൻว‛ 85$T ߩ⏛ᕈንጟ ૓ጘ, ๺᳋ ೰, ↰⇌ ศ⸘, ਛ᧛ ⵨ਯ੩ㇺᄢቇ Ꮏቇ⎇ⓥ⑼ ᧚ᢱᎿቇኾ᡹ ᧚ᢱ‛ℂቇ⎇ⓥቶ
E-mail㧦tomioka@t04.mbox.media.kyoto-u.ac.jp
 V㧠S㧥Br㧠ߪ V㧠S㧥ࠍන૏ߣߒߚࠢ࡜ࠬ࠲ൻว‛ߢ޽ࠆ‫ߩߎޕ‬ൻว‛ߩ᭴ㅧ਄ߩ․ᓽߪ‫ޔ‬ᩭࠍᒻᚑߔࠆ 4 ߟߩ V ࠗࠝࡦ߇ห৻ᐔ㕙਄ߢᱜᣇᒻߦ㈩೉ߒ‫ޔ‬㓞ធߔࠆࠢ࡜ࠬ࠲ห჻ߪ
Br ࠗࠝࡦߦࠃࠅ᨞ᯅߐࠇߡ޿ࠆߎߣߢ޽ࠆ‫ޕ‬ㄭᐕߎߩൻว‛ߦ߅޿ߡ‫ޔ‬15 K ߣ 50 K ઃㄭߢߩ 2 ߟߩ⋧ォ⒖ߩሽ࿷߇ႎ๔ߐࠇߡ޿ࠆ[1]‫ ࠄࠇߎޕ‬2 ⒳ߩ⋧ォ⒖ߪ‫ޔ‬15 K ߢߩ᭴ㅧ⋧ォ⒖ߣߘࠇߦઃ㓐ߒߡ⿠ߎࠆ low spin state (S=0) ߆ࠄ high spin state (S=2) ߳ߩ㔚ሶߩബ⿠㧔50 K ߦߡബ⿠߇⚳ੌ㧕ߦࠃࠆ߽ߩߢ޽ࠆߣ੍ᗐ߇ߥߐࠇߡ޿ࠆ‫ߚ߹ޕ‬ၮᐩ⁁ᘒߦߟ޿ߡ߽⸒෸ߐࠇߡ߅ࠅ‫ޔ‬15 K ߦ߅ߌࠆᏪ⏛₸ߩᕆ⪭෸߮ಽሶ゠㆏ᴺߦࠃࠆ㔚ሶ⁁ᘒ⸘▚⚿ᨐ߆ࠄ‫ޔ‬ၮᐩ⁁ᘒߪ㕖⏛ᕈߢ޽ࠆߣႎ๔ߐࠇߡ޿ࠆ‫ޔߒ߆ߒޕ‬㧞ߟߩ⋧ォ⒖ߣၮᐩ⁁ᘒߦߟ޿ߡߩ⹦⚦ߪታ㛎⊛ߦ᣿ࠄ߆ߦߥߞߡ޿ߥ޿‫ޕ‬ ߘߎߢ‫ޔ‬ᚒ‫ߪޘ‬න⚿᥏⹜ᢱࠍ૞⵾ߒ‫⏛ߥ⚦⹦ޔ‬ᕈߦߟ޿ߡ⎇ⓥࠍⴕߞߚ‫ޕ‬Ꮺ⏛₸ߩⷺᐲଐሽᕈࠍ᷹ቯߒߚߣߎࠈ‫ޔ‬ၮᐩ⁁ᘒߦ߅޿ߡ߽⏛ൻߩᱷ⇐߇ሽ࿷ߔࠆ᜼േ߇⷗ฃߌࠄࠇߚ‫ޔߦࠄߐޕ‬㜞⏛႐⏛ൻ᷹ቯࠍⴕߞߚߣߎࠈ‫ޔ‬15 K ߩォ⒖᷷ᐲએਅߦ߅޿ߡ‫ޔ‬෻ᒝ⏛
ᕈ૕ߦ․ᓽ⊛ߥࠬࡇࡦࡈ࡝࠶ࡊォ⒖߇᷹ⷰߢ߈ߚ㧔࿑ 1㧕‫ޕ‬એ਄ߩ⚿ᨐࠃࠅ‫ߩ♽ᧄޔ‬ၮᐩ⁁ᘒߪ㕖⏛ᕈߢߪߥߊ෻ᒝ⏛ᕈ⒎ᐨ⁁ᘒߢ޽ࠆߎߣ߇ᣂߚߦ⸃ߞߚ‫ޔߒߛߚޕ‬V ࠗࠝࡦ
1 ߟ޽ߚࠅߩ㘻๺⏛ൻߩ୯߇ 1.0 ǴB㧔S=1/2㧕ࠃࠅዊߐ޿
ߚ߼‫ޔ‬න⚐ߥ෻ᒝ⏛ᕈ⒎ᐨߢߪߥ޿ߎߣ߇ુ߃ࠆ‫ޕ‬
࿑ 1 V4S9Br4 ߩ㜞⏛႐⏛ൻᦛ✢[1] Yuri V. Mironov et al., J. Phys. Chem. B 109, 23804 (2005)70

2Ꮧ㉼ࡂࠗ࠯ࡦࡌ࡞ࠣ෻ᒝ⏛ᕈ૕ )FZ;Z4W5K ߩ⏛ᕈ㊄↰ℂผ‫⇌↰ޔ‬ศ⸘‫ޔ‬ጊፒᾖᄦ‫ޔ‬๺᳋೰‫ޔ‬ਛ᧛⵨ਯ੩ㇺᄢቇ Ꮏቇ⎇ⓥ⑼ ᧚ᢱᎿቇኾ᡹
E-mail㧦kanada.satoshi@t05.mbox.media.kyoto-u.ac.jp Ꮧ࿯㘃ൻว‛ RRu2Si2 ߪ‫ޔ‬ᱜᣇ᥏ ThCr2Si2 ဳ(I4/mmm)ߩ⚿᥏᭴ㅧࠍᜬ
ߟ෻ᒝ⏛ᕈ૕ߢ‫⏛ޔ‬ᕈේሶ㑆ߦ௛ߊਥߥ⋧੕૞↪ߪ RKKY ⋧੕૞↪ߢ޽ࠆ‫⾰‛ߩࠄࠇߎޕ‬ߢߪ⏛ᕈࠍᜂ߁ R3+ࠍ㕖⏛ᕈߩ Y3+ߢᏗ㉼ߔࠆߎߣߦࠃࠅ‫⏛ޔ‬᳇⒎ᐨ߇ᛥ೙ߐࠇߡ෻ᒝ⏛ᕈ
ォ⒖᷷ᐲ߇ਅ߇ࠅ‫ᦼ߇ߣߎࠆߓ↢߇⋧ࠬ࡜ࠣࡦࡇࠬޔ‬ᓙߐࠇࠆ‫ޕ‬ᚒ‫ ߪޘ‬R=Dy3+ߩᏗ㉼♽
DyxY1-xRu2Si2 ߇ x=0.103 ߩỚᐲߢォ⒖ὐ Tg=1.9 K ߩᒝ޿ࠗࠫࡦࠣᕈࠍᜬߟࠬࡇࡦࠣ࡜ࠬ⋧߇ሽ࿷ߔࠆߎߣࠍ⏕⹺ߒ‫ࠬ࡜ࠣࡦࡇࠬߩߘޔ‬ォ
⒖ߪᐔဋ႐ࡕ࠺࡞ߦࠃߞߡࠃߊ⸥ㅀߢ߈ࠆߎߣ
ࠍ⷗಴ߒߚ‫ࡦ࠯ࠗࡂࠄ߆ဳࠣࡦࠫࠗޔߢߎߘޕ‬ࡌ࡞ࠣဳߦᄌൻߐߖߚߣ߈ߦߤߩࠃ߁ߥࡕ࠺࡞
ߢ⸥ㅀߢ߈ࠆ߆ࠍ⺞ߴࠆߚ߼ߦ‫゠ޔ‬㆏ⷺㆇേ㊂ࠍᜬߚߥ޿ R=Gd3+ߩᏗ㉼♽ GdxY1-xRu2Si2 ߦࡂࠗ࠯ࡦࡌ࡞ࠣဳߩࠬࡇࡦࠣ࡜ࠬ⋧ߩሽ࿷ࠍᦼᓙߒ‫ޔ‬ߘߩ⏛ᕈࠍ⺞ߴߡ޿ࠆ‫ޕ‬Ớᐲ x=0.07 ߢߪ㔖⏛႐಄ළᏪ⏛₸ ZFC ߣ⏛႐ਛ಄ළᏪ⏛₸ FC ߩ㑆ߦォ⒖

࿑ Gd0.07Y0.93Ru2Si2 ߩ ZFC ߣ FC

ὐએਅߢ᣿⏕ߥᏅ߇⷗ࠄࠇࠆ‫ޕ‬2ࠛࠗࠦࠨࡍࡦ࠲ࠛࡦ㉄฽᦭࡝ࡦ⢽⾰ߩേᘒ⸃ᨆ
ߦ↪޿ࠆಽሶࡊࡠ࡯ࡉߩวᚑߣߘߩ⹏ଔ
૒⮮ ⠍ a, ᩙේ ㆐ᄦ a, ૒⮮ ᥓ b, Ꮉᧄ ⚐ a, ᳯ㦮 ା⧐ aa ੩ㇺᄢቇ

ൻቇ⎇ⓥᚲ ⅣႺ‛⾰ൻቇ⎇ⓥ♽ ಽሶᓸ↢‛⑼ቇ㗔ၞb ੩ㇺᄢቇ

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ ቇ㓙ૐ᷷ᔕ↪⎇ⓥಽ㊁

E-mail㧦satosho@mbc.kuicr.kyoto-u.ac.jp
 ࠛࠗࠦࠨࡍࡦ࠲ࠛࡦ㉄ ( EPA ) ߪૐ᷷࡮㜞࿶ၞߢ↢ᕷߔࠆ↢‛ߦᄙߊ฽߹ࠇ‫ࡦ࡝ޔ‬⢽⾰ߩ sn-2 ૏ࠕࠪ࡞㎮ᚑಽߣߒߡሽ࿷ߒߡ޿ࠆ‫ޕ‬EPA ฽᦭࡝ࡦ⢽⾰ߪ⤑ᵹേᕈߩ⛽ᜬ߿⤑࠲ࡦࡄࠢ⾰ߩᯏ⢻⊒⃻ߦ㑐ਈߔࠆߣ⠨߃ࠄࠇߡ޿ࠆ߇‫ޔ‬ᯏ⢻ߩ⹦⚦ߪਇ᣿ߢ޽ࠆ‫ޕ‬ᒰ⎇ⓥቶߢߪ
EPA ࠍ

4͠ઃㄭߩૐ᷷ߢߩߺ↢↥ߔࠆૐ᷷⩶Shewanella livingstonensis Ac10 ߦ߅޿ߡEPA ฽᦭࡝ࡦ⢽⾰ߣ⤑࠲ࡦࡄࠢ⾰ߩ⋧੕૞↪ࠍ␜ໂߔࠆ⍮⷗ࠍᓧߡ޿ࠆ‫ߘޕ‬ߎߢ‫⎇ᧄޔ‬ⓥߢߪ in vivo ߢ࠲ࡦࡄࠢ⾰-⢽⾰㑆⋧੕૞↪ࠍ⸃ᨆߔࠆߚ߼ߩಽሶࡊࡠ࡯ࡉߣߒߡࠛ࡯࠹࡞ဳ EPA ฽᦭Ⱟశ࡝ࡦ⢽⾰ࠍวᚑߒ ( Fig. 1 )‫ ߩ⩶ᧄޔ‬EPA ᰳ៊ᩣߦᄖㇱᷝടߒߚ㓙ߩ phenotype ࠍ⢽⾰േᘒߦ⌕⋡ߒߡ⸃ᨆߒߚ‫⚿ߩߘޕ‬ᨐ‫ ޔ‬EPA ․⇣⊛ߥዪ࿷ࠍนⷞൻߔࠆߎߣߦᚑഞߒߚ ( Fig. 2 )‫ޕ‬ᧄႎ๔ળߢߪ‫⚿ߥ⚦⹦ࠅࠃߩߡ޿ߟߦࠇߎޔ‬ᨐߣߘࠇߦၮߠߊ⠨ኤࠍㅀߴߚ޿‫ޕ‬71

2ૐ᷷ㆡᔕ⚦⩶ߩⅣႺㆡᔕߦ߆߆ࠊࠆ⤑࠲ࡦࡄࠢ⾰ߩត⚝ᧉ ⽵ᴡ‫ޔ‬Ꮉᧄ ⚐‫ޔ‬ᩙේ ㆐ᄦ‫ޔ‬ᳯፒ ା⧐੩ㇺᄢቇ ൻቇ⎇ⓥᚲ ಽሶᓸ↢‛⑼ቇ
E-mail㧦jungha@mbc.kuicr.kyoto-u.ac.jp
 [⋡⊛] ૐ᷷⩶ Shewanella livingstonensis Ac10 ߪ‫ޔ‬㐳㎮ᄙଔਇ㘻๺⢽⢌㉄ߩ৻⒳ߢ޽ࠆࠛࠗࠦࠨࡍࡦ࠲ࠛࡦ㉄ (EPA) ࠍ↢↥ߔࠆ‫ޕ‬
EPA ↢วᚑㆮવሶࠍ⎕უߒߚ⚿ᨐ‫ޔ‬EPA ߇ૐ᷷ߢߩ⚦⢩ಽⵚߦ㊀ⷐߢ޽ࠆߎߣ߇ࠊ߆ߞߚ‫৻ޕ‬ᣇߢ‫ޔ‬ᄖ⤑ࡐ࡯࡝ࡦߩ↢↥㊂߇㗼⪺ߦૐਅߒߡ޿ࠆߎߣ߇ࠊ߆ࠅ‫ޔ‬EPA ߇ૐ᷷ߢߩ⤑࠲ࡦࡄࠢ⾰⚵ᚑߦᓇ㗀ߒߡ޿ࠆߎߣ߇␜ߐࠇߚ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬EPA ᰳ៊߇ౝ⤑࠲ࡦࡄࠢ⾰ߦ෸߷ߔᓇ㗀ࠍ⸃ᨆߔࠆߎߣࠍ⋡ᜰߒ‫ߩ⩶ᧄޔ‬ౝᄖ⤑ಽ㔌ᴺߩ⏕┙ߣౝᄖ⤑࠲ࡦࡄࠢ⾰ߩࡊࡠ࠹ࠝ࡯ࡓ⸃
ᨆࠍⴕߞߚ‫[ޕ‬ᣇᴺ࡮⚿ᨐ] ࡚ࠪ♧ኒᐲ൨㈩㆙ᔃᴺࠍ↪޿ߡ‫ޔ‬4ƷC ߣ 18͠ ߢၭ㙃ߒߚᧄ⩶߆ࠄౝᄖ⤑ࠍಽ㔌ߒ‫ࡦ࡝ޔ‬⢽⾰㊂߅ࠃ߮ SDS-PAGE ߦࠃࠆ࠲ࡦࡄࠢ⾰ߩ⚵ᚑࠍᜰᮡߣߒ
ߡౝ⤑ߣᄖ⤑ࠍ⺞⵾ߒߚ‫ ࠍ⾰ࠢࡄࡦ࠲⤑ߩߘޕ‬2 ᰴర㔚᳇ᵒേߦଏߒߡߘࠇߙࠇߩࠬࡐ࠶
࠻ࠍࡍࡊ࠴࠼ࡑࠬࡈࠖࡦࠟ࡯ࡊ࡝ࡦ࠴ࠖࡦࠣᴺߢ⸃ᨆߒߚ⚿ᨐ‫ޔ‬ౝ⤑࠲ࡦࡄࠢ⾰߿๟ㄝ⾰
࠲ࡦࡄࠢ⾰ߥߤ߇ಝ❗ߐࠇߚ↹ಽࠍᓧࠄࠇߚߎߣ߇ಽ߆ߞߚ‫ޕ‬4ƷC ߣ 18͠ ߢၭ㙃ߒߚ⩶ߩౝ⤑࠲ࡦࡄࠢ⾰ࠍᲧߴߚ⚿ᨐ‫⚦ޔ‬⢩ಽⵚ‫⿛ޔ‬ൻᕈ࠮ࡦࠨ࡯‫↢ࡦࠞ࡝ࠣ࠼࠴ࡊࡍޔ‬วᚑߦ㑐ࠊࠆౝ⤑࠲ࡦࡄࠢ⾰ߩࡎࡕࡠࠣߩ↢↥㊂߇‫ޔ‬4ƷC ߢჇടߒߡ޿ࠆߎߣ߇ࠊ߆ߞߚ‫ޕ‬2Folding of an outer membrane porin from cold-adaptedbacterium facilitated by eicosapentaenoic acid-containing
phospholipids
DAI Xian-Zhua, KAWAMOTO Juna, SATO Satoshib, KURIHARA Tatsuoa,
ESAKI NobuyoshiaaInstitute for Chemical Research, Kyoto UniversitybResearch Center for Low Temperature and Material Sciences, Kyoto
University
E-mail: daixianzhu@mbc.kuicr.kyoto-u.ac.jp
Shewanella livingstonensis Ac10 is a psychrotrophic bacterium isolated from Antarctic
Ocean, which synthesizes eicosapentaenoic acid (EPA)-containing phospholipids. The
disruption of EPA synthesis genes leads to growth retardation at 4ÛC but not at 18ÛC,suggesting that EPA plays an important role in cold-adaption of S. livingstonensis Ac10.
Omp_C74, a homolog of outer membrane porin OmpA, is cold-inducible in this bacterium.
Western-blot analysis of the wild-type strain and the EPA-deficient mutant with Omp_C74
antiserum suggested that Omp_C74 adopts different conformation in the presence of EPA.
We further investigated the folding of Omp_C74 in vitro in the presence or absence of
EPA-containing phospholipids. Recombinant Omp_C74 unfolded in urea was refolded by
rapid dilution into liposomes made from 1, 2-dipalmitoleoyl-sn-3-phosphatidylglycerol andphosphatidylethanolamine with or without EPA-containing phospholipids. The folded form
was confirmed by checking its heat-modifiable character by SDS-PAGE. We found that
Omp_C74 folded more efficiently in liposomes with EPA-containing phospholipids, andthe protein folded in the presence and absence of EPA-containing phospholipids showed
different limited proteolysis patterns.
722ᄖㇱ⏛႐ਅߦ߅ߌࠆ %Q0K ⚦✢ਛߩ⏛ო㔚ᵹ㚟േዊጊ⍮ᒄ a, ጊ↰ర a, ਄↰ᶈᐔ a, ජ⪲ᄢ࿾ a, ⼱Ꮉඳା b, ᷓ⷗ବテ b,㋈ᧁືᐢ b, ᄢ᎑ೣ๺ b, ⍹✎ᑧⴕ b, ખ⼱ᩕિ c, ዊ㊁ノ↵ aa ੩ㇺᄢቇ

ൻቇ⎇ⓥᚲ ࠽ࡁࠬࡇࡦ࠻ࡠ࠾ࠢࠬ,bNEC ࠺ࡃࠗࠬࡊ࡜࠶࠻ࡈࠜ࡯ࡓ⎇ⓥᚲ, c 㔚ㅢᄢᖱႎE-mail㧦koyama@ssc1.kuicr.kyoto-u.ac.jp ᒝ⏛ᕈ૕ਛ䈱⏛ო䉕㔚ᵹ䈮䉋䉍㚟േ䈜䉎⏛ო㔚ᵹ㚟േ⃻⽎䈲䇮‛ℂ⊛ߦ⥝๧ᷓ޿⃻⽎ߢ޽ࠆߛߌߢߥߊ࠺ࡃࠗࠬᔕ↪߳ߩน⢻ᕈࠍ⒁߼ߡ޿ࠆߎߣ߆ࠄ‫⃻ޔ‬࿷਎⇇ਛ䈪⋓䉖䈮⎇ⓥ䈘
䉏䈩䈇䉎䇯․ߦㄭᐕߪ‫⏛⋥ုޔ‬ൻ⤑ߦ߅ߌࠆ⏛ო㔚ᵹ㚟േ⃻⽎߇ᵈ⋡ߐࠇߡ޿ࠆ‫ޕ‬ᚒ‫ုߪޘ‬⋥⏛᳇⇣ᣇᕈࠍ᦭ߔࠆ Co/Ni ⚦✢ࠍ↪޿‫ޔ‬ᄖㇱ⏛႐ਅߦ߅޿ߡ⏛ო㔚ᵹ㚟േታ㛎ࠍⴕߞߚ‫ޕ‬
Co/Ni ᄙጀ⤑䉕⚦✢䈮ᓸ⚦ടᎿ䈚䈩૞⵾ߒߚ⹜
ᢱࠍ↪޿ߡ䇮න৻⏛ოߩ⏛ო㔚ᵹ㚟േታ㛎ࠍⴕߞߚߣߎࠈ‫⏛ޔ‬ოࠍേ߆ߔߩߦᦨૐ㒢ᔅⷐߥ㔚ᵹኒᐲ 㑣㔚ᵹኒᐲ ߅ࠃ߮⏛ო⒖േㅦᐲ߇ᄖㇱ⏛႐ߩะ߈‫ޔ‬ᄢ߈ߐߦ߶ߣࠎߤଐሽߒߥ޿ߎߣ
߇ಽ߆ߞߚ‫⚿ߩࠄࠇߎߦࠄߐޕ‬ᨐߪᢙ୯ࠪࡒࡘ
࡟࡯࡚ࠪࡦ⚿ᨐߣቯ㊂⊛ߦ৻⥌ߒߚ‫ޕ‬ታ㛎ߩ⹦⚦ߦߟ޿ߡߪᧄ⻠Ṷߢ⺑᣿ߔࠆ‫ޕ‬࿑ 1.⏛ოㅦᐲߩᄖㇱ⏛႐ଐሽᕈ2ု⋥⏛᳇⇣ᣇᕈࠍ᦭ߔࠆ %Q0K ⚦✢     ⶄᢙ⏛ო㔚ᵹ㚟േጊ↰ర a, ዊጊ⍮ᒄ a, ਄↰ᶈᐔ a, ජ⪲ᄢ࿾ a, ⼱Ꮉඳା a,b, ᷓ⷗ବテ b,㋈ᧁືᐢ b, ᄢ᎑ೣ๺ b, ⍹✎ᑧⴕ b, ખ⼱ᩕિ c, ዊ㊁ノ↵ aa ੩ㇺᄢቇ
bNEC

ൻቇ⎇ⓥᚲ ᧚ᢱᯏ⢻ൻቇ⎇ⓥ♽ ࠽ࡁࠬࡇࡦ࠻ࡠ࠾ࠢࠬ⎇ⓥ㗔ၞ࠺ࡃࠗࠬࡊ࡜࠶࠻ࡈࠜ࡯ࡓ⎇ⓥᚲ

c 㔚᳇ㅢାᄢቇ

ᖱႎᎿቇ⑼E-mail㧦gen@ssc1.kuicr.kyoto-u.ac.jp ᒝ⏛ᕈ⚦✢਄ߩ⏛ო㔚ᵹ㚟േታ㛎ߦߟ޿ߡߎࠇ߹ߢᄙߊߩႎ๔߇ߥߐࠇߡ޿ࠆ㧚ߣࠅࠊߌ㧘ⶄᢙ୘ߩ⏛ოߩ㔚ᵹ㚟േ⃻⽎ߪࡔࡕ࡝࠺ࡃࠗࠬ߳ߩᔕ↪ߣ޿߁ⷰὐ߆ࠄ㕖Ᏹߦ㊀ⷐߢ޽ࠆ㧚ᧄ⻠Ṷߢߪ㧘ု⋥⏛᳇⇣ᣇᕈࠍ᦭ߔࠆ Co/Ni ⚦✢ਛߦዉ౉ߒߚⶄᢙ୘ߩ⏛ოࠍห৻ᣇะ㧘߅ࠃ߮೨ᓟᣇะߦ㔚ᵹ㚟േߐߖ㧘⇣Ᏹࡎ࡯࡞ലᨐࠍ↪޿ߡ㔚᳇⊛ߦᬌ಴ߒߚ⚿ᨐߦߟ޿ߡႎ๔ߔࠆ㧚 ߥ߅㧘ᧄ⎇ⓥߩ৻ㇱߪᣂࠛࡀ࡞ࠡ࡯࡮
↥ᬺᛛⴚ✚ว㐿⊒ᯏ᭴(NEDO)ߦࠃߞߡ
ᡰេߐࠇߚ㧚㩷 㩷 㩷 ࿑ 㩷 ⹜ᢱ߅ࠃ᷹߮ቯ࿁〝ߩᮨᑼ࿑㧚 73

2౒㡆ബ⿠⁁ᘒࠍ↪޿ߚ⏛᳇ࠦࠕᭂᕈ෻ォ੩ᄢൻ⎇ A‫ޔ‬NEC ࠺ࡃࡊ࡜⎇ B‫ ⎇᧚‛ޔ‬C‫ޔ‬㔚ㅢᄢᖱႎᎿ D
ਛ㊁㇌⵨ A,ජ⪲ᄢ࿾ A,ᄢ᎑ೣ๺ B,⪾⷏િ຦ C,ખ⼱ᩕિ D㑐ญᐽῺ A,ዊᨋ⎇੺ A,ዊ㊁ノ↵ AInstitute for Chemical Research, Kyoto University A, NEC Laboratories; Device Platforms ResearchLaboratories B, Magnetic Material Center, National Institute for Materials ScienceC, Department ofComputer Science, University of Electro-Communications D
E-mail: nakano@ssc1.kuicr.kyoto-u.ac.jp ᒝ⏛ᕈ⏛᳇౞⋚ߦ⃻ࠇࠆ⏛᳇᷵᭴ㅧߪ‫ޔ‬ਛᔃㇱಽߦ⏛᳇ࠦࠕߣ๭߫ࠇࠆ⏛ൻߩ┙ߜ਄߇ߞߚ᭴ㅧࠍᜬߟ‫⏛ޕ‬᳇᷵ߪ⏛᳇ࠦࠕߩᭂᕈࠍ೑↪ߒߚᣂⷙ⏛᳇⸥㍳࠺ࡃࠗࠬߣߒߡߩ
ᔕ↪߇ᦼᓙߐࠇߡ޿ࠆ♽ߣߒߡᵈ⋡ߐࠇߡ޿ࠆ‫⏛ޕ‬᳇ࠦࠕߩᭂᕈᬌ಴ߪ⸥㍳ᇦ૕߆ࠄߩ⺒ߺ಴ߒߦ⋧ᒰߒ‫⏛ޔ‬᳇ࠦࠕߩᭂᕈ෻ォߪᖱႎߩᦠ߈ㄟߺߦ⋧ᒰߔࠆ‫⻠ᧄޕ‬Ṷߢߪ‫ޔ‬ᭂᕈ෻ォ෸߮ᭂᕈᬌ಴ߩ㔚᳇⊛ᚻᴺߦߟ޿ߡႎ๔ߔࠆ‫ޕ‬⏛᳇ࠦࠕᭂᕈߪ੤ᵹ㔚ᵹ෸߮ࡄ࡞ࠬ㔚ᵹࠍශടߔࠆߎߣߢᭂᕈ෻ォߐߖࠆߎߣ߇น⢻ߢ޽ࠆ‫ࠬ࡞ࡄޕ‬㔚ᵹߦࠃࠆᭂᕈ෻ォߪᄢ߈ߥ㔚ᵹኒᐲ(~1012 [A/m2])߇ᔅⷐߥߚ߼‫ࠬࠗࡃ࠺ޔ‬ᔕ↪߳ะߌߡ⃻ታ⊛ߢߥ޿‫ᧄޔߢߎߘޕ‬ታ㛎ߢߪ౒㡆⁁ᘒࠍബ⿠ߒߟߟࡄ࡞ࠬ㔚ᵹࠍශടߔࠆߎߣߢ‫ޔ‬෻ォߦᔅⷐߥ㔚ᵹኒᐲࠍૐᷫߐߖࠆߎߣࠍ⹜ߺߚ‫ޕ‬᷹ቯ⚿ᨐ(Fig.1)ࠃࠅ‫ࡄޔ‬࡞ࠬ㔚ᵹශട೨ᓟߢᭂᕈߩ෻ォ෸߮෻ォࡄ࡞ࠬ㔚ᵹኒᐲߩૐᷫ߇᷹ⷰߐࠇߚ‫ޕ‬[1] S. Kasai, et al., Appl. Phys. Express. 1, 091302 (2008). [2] K.Yamada et al., Nature Materials, 6,269 (2007). [3] K.Yamada et al., Appl. Phys. Lett. 95, 152502 (2008).

2㊂ሶࡎ࡯࡞⁁ᘒߩ፣უ㗔ၞߦ߅ߌࠆ㔀㖸᷹ቯ⍮↰ஜ૞ 1‫ޔ‬ᯅဈ᣽ᐘ 1,2‫ޔ‬ጊౝ␽ᤩ 1‫ޔ‬ਛ᧛⑲ม 1‫⨹ޔ‬Ꮉ෹♿ 1↸↰෹᮸ 3‫ޔ‬ዊᨋ⎇੺ 1‫ޔ‬ዊ㊁ノ↵ 1੩ㇺᄢቇൻቇ⎇ⓥᚲ᧲੩Ꮏᬺᄢቇᄢቇ㒮ℂᎿቇ⎇ⓥ⑼

᧲੩ᄢቇ↢↥ᛛⴚ⎇ⓥᚲ

E-mail㧦 chida@ssc1.cuicr.kyoto-u.ac.jp
 ੑᰴర㔚ሶ♽ߦု⋥ߦᒝ⏛႐ࠍශടߔࠆߣ㊂ሶࡎ࡯࡞⁁ᘒߣ๭߫ࠇࠆ㔚ሶᢔੂߩߥ޿ή
ᢔㅺߥવዉ⁁ᘒߣߥࠆ‫ޕ‬㊂ሶࡎ࡯࡞⁁ᘒߪᄢ߈ߥࡃࠗࠕࠬ㔚࿶ߩශടߥߤߦࠃߞߡ፣უߔ
ࠆ߇‫ߩߘޔ‬፣უ㗔ၞߦ߅ߌࠆ㔚ሶߩવዉ⁁ᘒߪࠃߊಽ߆ߞߡ޿ߥ޿‫⎇ᧄޔߢߎߘޕ‬ⓥߢߪ
㊂ሶࡎ࡯࡞⁁ᘒߩ፣უ㗔ၞߦ߅ߌࠆ㔚ሶવዉߦ㑐ߔࠆ⍮⷗ࠍᓧࠆߚ߼ߦવዉᐲ᷹ቯߦ૬ߖߡ㔀㖸᷹ቯࠍⴕߞߚ‫ޕ‬ ࿑㧝ߦવዉᐲ᷹ቯߣ㔀㖸᷹ቯߩ⚿ᨐࠍ␜ߔ‫ࠗࡃޕ‬ࠕࠬ㔚࿶ Vsd ߇ 100 PV એਅߩ㗔ၞߦ߅޿ߡߪ㊂ሶࡎ࡯࡞⁁ᘒ߇⛽ᜬߐࠇߡ޿ࠆߚ߼‫ޔ‬㔚ሶᢔੂ߇ήߊ‫ޔ‬㔀㖸߇㕖Ᏹߦዊߐ޿‫ޔߒ߆ߒޕ‬Vsd ߇ 100 PV ࠍ਄࿁ࠆߣ‫ޔ‬㊂ሶࡎ࡯࡞⁁ᘒߩ፣უߦ઻ߞߡ᦭㒢ߩ㔀㖸߇⊒↢ߔࠆ‫ޕ‬ᒰᣣߪߎࠇࠄߩ⚿ᨐߦߟ޿ߡ⠨ኤߔࠆ‫ޕ‬74࿑㧝㧚વዉᐲ᷹ቯߣ㔀㖸᷹ቯߩ⚿ᨐ

2⏛᳇᷵ࠦࠕߩ࠳ࠗ࠽ࡒࠢࠬߦ⺃⿠ߐࠇߚࠬࡇࡦ⿠㔚ജߩታᤨ㑆᷹ቯ↰ㄝ ⾫჻ a, ජ⪲ ᄢ࿾ a, ᄢᳯ⚐৻㇢ b,c㧘⪾⷏િ຦ d㧘ᴡ㊁ᶈ e㧘೨Ꮉ⑓ㅢ b,c㧘ዊ㊁ノ↵ aa ੩ㇺᄢቇᄢቇ㒮ℂቇ⎇ⓥ⑼ ൻቇኾ᡹ ࠽ࡁࠬࡇࡦ࠻ࡠ࠾ࠢࠬಽ⑼b ᧲ർᄢቇᄢቇ㒮㊄ዻ᧚ᢱ⎇ⓥᚲ ㊄ዻ‛ᕈ⺰⎇ⓥㇱ㐷c ⁛┙ⴕ᡽ᴺੱ⑼ቇᛛⴚᝄ⥝ᯏ᭴ᚢ⇛⊛ഃㅧផㅴ੐ᬺd ⁛┙ⴕ᡽ᴺੱ‛᧚࡮᧚ᢱ⎇ⓥᯏ᭴⏛ᕈ᧚ᢱ࠮ࡦ࠲࡯e ᄢ㒋ᄢቇᄢቇ㒮ၮ␆Ꮏቇ⎇ⓥ⑼ ‛⾰ഃᚑኾ᡹ ‛ᕈ‛ℂᎿቇ㗔ၞ

E-mail㧦tanabe@ssc1.kuicr.kyoto-u.ac.jp

࿑ 1 ⏛᳇᷵᭴ㅧ0+]
0+]0+]㔚࿶㩷>9@ ㄭᐕ‫ޔ‬ᐞ૗ቇ⊛ߥ૏⋧ߦ㑐ଥߔࠆᣂߒ޿⿠㔚ജ 䉴䊏䊮⿠㔚ജ ߩሽ࿷߇੍⸒ߐࠇߡ޿ࠆ‫⿠ࡦࡇࠬޕ‬㔚ജߪߨߓࠇߚ⏛ൻ᭴ㅧ߇ᤨ㑆ᄌൻߒߚ㓙ߦዪᚲ⊛ߦ↢ߓࠆߣ޿߁․ᓽ߇޽ࠆ‫ߘޕ‬ߎߢᧄ⎇ⓥߪ⏛᳇᷵᭴ㅧࠍ↪޿ߡࠬࡇࡦ⿠㔚ജߩዪᚲ⊛ߥታᤨ㑆᷹ቯࠍ⋡ᜰߒߚ‫⏛ޕ‬᳇᷵᭴ㅧߪᒝ⏛ᕈ૕ࠍ⋥ᓘᢙPmߩ౞⋚⁁ߦടᎿߒߚᤨߦ⃻ࠇࠆ᷵⁁ߩ⏛ൻ᭴ㅧ㧔࿑㧕ߢ޽ࠅ‫ޔ‬᷵ߩ⌀ࠎਛߦ䉮䉝ߣ๭߫ࠇࠆ㗔ၞ߇޽ࠆ‫ߩࠕࠦߩߎޕ‬ㆇേߪߨߓࠇߚ⏛ൻ᭴ㅧߩᤨ㑆ᄌൻߦ⋧ᒰߔࠆߚ߼ߦࠦࠕઃㄭ
ߢࠬࡇࡦ⿠㔚ജߩ⊒↢߇੍ᗐߐࠇࠆ‫ߩࠕࠦߢߎߘޕ‬ㆇേ⚻〝ઃㄭߦᓸ⚦ߥ㔚ᭂࠍ㈩⟎ߔࠆߎߣߢ⿠㔚ജߩዪᚲ⊛ታᤨ㑆᷹ቯ߇ⴕ߃ࠆ‫ߥ߁ࠃߩߎޕ‬ᚻᴺࠍ↪޿ߡࠬࡇࡦ⿠㔚ജߩᬌ಴ߦ
ᚑഞߒߚ㧔࿑㧕‫ޕ‬ታ㛎 ⚿ᨐ ߩ⹦⚦ߪᒰᣣႎ๔ߔࠆ੍ቯߢ޽
ࠆ‫ޕ‬




   ᤨೞ䇭㪲㫅㫊㪴

࿑ 2 75 MHz ߢࠬࡇࡦ⿠㔚ജߩᬌ಴2Present Status of Dark-Matter Axion-Search “CARRACK”
a

b
e

a
f

c
a

d
f

b
g

b
f

M. Saeed ‫ޔ‬ਛ⷏ᕀᄩᄹ ‫ޔ‬ᣂ੗ᢅ৻ ‫↰⑔ޔ‬ᤘ ‫⥱ޔ‬ᯅᤐᒾ ‫ޔ‬ᳰ↰⌀਽ ‫੹ޔ‬੗ᙗ৻ ‫ޔ‬e੖ච᫮ᵏੱ ‫ޔ‬ട⮮㓉ਭ ‫ޔ‬ၔᚭ⟵᣿ ‫᧻ޔ‬ේ᣿ ‫ᧁ᧻ޔ‬ᓕผ ‫ޔ‬᳓ፒ㓉㓶 ‫᧛⷏ޔ‬ᥓᦶ ‫ޔ‬
e
a
b
e
h
ᄢᴛᄢテ ‫ޔ‬Ỉ↰቟᮸ ‫ޔ‬㜞ᯅ⟵ᦶ ‫ޔ‬ᚭፒల↵ ‫ޔ‬ጊᧄసᴦ

C੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯‫ޔ‬D ੩ㇺᄢቇℂቇ⎇ⓥ⑼‛ℂ‫ޔ‬㨏౓ᐶකᄢකቇㇱ‫ޔ‬F
ᄢ㒋㔚᳇ㅢାᄢቇᎿቇㇱ‫ޔ‬G ੩ㇺᄢቇ᡼኿ᕈห૏ర⚛✚ว࠮ࡦ࠲࡯‫ޔ‬H┙๮㙚ᄢቇℂᎿ‫ޔ‬I ⼾↰ℂൻቇ⎇ⓥᚲ‫ޔ‬㨔੩ㇺᄢቇᎿቇ⎇ⓥ⑼ේሶᩭ

E-mail㧦funahasi@isc.osakac.ac.jp

 Axion, a hypothetical elementary particle invoked to solve the time-reversal
invariance problem in strong interactions, is one of the most elegant solutions for thedark matter particles in the Universe. We have developed a sensitive method to search
for axions with a Rydberg-atom single-photon detector. In our detector system, theaxions are converted to microwave photons under a high magnetic field via thePrimakoff process. The axion-converted photons are then absorbed by Rydberg atoms
and the excited atoms are counted with a selective field-ionization method. Here thestatus of dark-matter axion-search called “CARRACK” is presented and discussed:
Specifically emphasized points are 1) use of Potassium Rydberg atoms, 2) two-step
excitation scheme with two diode lasers for the production of Rydberg atoms, 3) refined
setup of microwave cavity with Stark electrodes and metal posts at low temperature.

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1D 㜞Ớᐲ㗔ၞߩ 1D[&R2 ߦ⷗ࠄࠇࠆ
1D ේሶߩⷙೣ㈩೉㧘&R ଔᢙߩਇဋ৻߿⏛ᕈࡠࠪࠕࠞࠩࡦᎺ┙ᄢ‛ℂቇ⑼ ࠗ࡟ࠢ ࡑࠢࡂࡔ࠼ࠪࡦᢎ᝼ 3URI ,UHN 0XNKDPHGVKLQ  ࠍ⻠Ꮷߣߒߡ߅᜗߈ߒ㧘਄⸥ߩ⴫㗴ߩ߅⹤ࠍુߞߚ㧚⎇ⓥኻ⽎‛⾰࠽࠻࡝࠙ࡓࠦࡃ࡞࠻㉄ൻ‛ 1D[&R2 ߪ㧘៤Ꮺ㔚⹤╬ߦᐢߊ૶ࠊࠇߡ޿ࠆ࡝࠴࠙ࡓ㔚ᳰߦ↪޿ࠄࠇߡ޿ࠆ /L[&R2 ߣหߓ⚿᥏᭴ㅧࠍᜬߜ㧘1D Ớᐲࠍ೙ᓮߔࠆߎߣߦࠃࠅᄙᓀߥ‛ᕈࠍ␜ߔߎߣ߇⍮ࠄࠇߡ޿ࠆ㧚ߎࠇߪ &R2 㕙㑆ߩ 1D Ớᐲࠍᄌ߃ࠆߎߣߦࠃࠅ &R2 㕙ౝߩଔᢙࠍ೙ᓮߔࠆߎ
ߣ߇ߢ߈ࠆ߆ࠄߢ㧘1D ߩỚᐲߦࠃࠅ㧘(OHFWURQLFSURSHUWLHVRIWKH&RSODQH⇣ᏱߥᏱ⏛ᕈ⁁ᘒ߿ଔᢙߩਇဋ৻⁁&RDDQG&RE QRQPDJQHWLF&R VLWHVFHOO± ᘒ㧘ㆉᱧ෻ᒝ⏛ᕈ⁁ᘒߥߤ㧘ᗐ௝߽

&RDDQG&RE LGHQWLFDOPDJQHWLVP± VLWHVFHOO 1D KROHVFHOOIRUPDOFKDUJH &R

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1D[&R2 ߦ߅ߌࠆ‛ᕈࠍ㧘648,' ߦࠃࠆ⏛ൻ᷹ቯ߿ ; ✢࿁᛬㧘 1D㧘 &R
ᩭߩ 105ᩭ྾㊀ᭂ౒㡆 145 ߦࠃࠅ⎇ⓥߒߚ⚿ᨐߦߟ޿ߡႎ๔ߐࠇߚ㧚


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1D㧘 &R105145ߩታ㛎߆ࠄ㧘੹࿁⺞ߴߚ㜞Ớᐲ⋧ߩߔߴߡߩ⹜ᢱ
ߦ߅޿ߡ㧘.એ਄ߩ㜞᷷ߢᣢߦ㕖

⏛ᕈߩ&R ߣࡎ࡯࡞߇ㇱಽ⊛ߦዪ࿷ߒߚ⏛᳇⊛ߥ&R࿑㧦1D&R2 ߢታ㛎߆ࠄ␜ߐࠇߚ &ROD\HU ߩ㔚ሶ⁁ᘒ㧚㕖⏛ᕈߣ⏛ᕈߩ &R ࠨࠗ࠻߇ⷙೣ⊛ߦ㈩೉ߒ㧘⏛ᕈࠨࠗ
࠻ߩ &R ߪࠞࠧࡔᩰሶࠍᒻᚑߒߡ޿ࠆ㧚

ߦ&Rߩଔᢙߩਇ

ဋⴧ߇⿠ߎߞߡ޿ࠆߎߣ
ࠍ᣿ࠄ߆ߦߒߚ㧚․ߦ
1D&R2 ߢߪ⠨߃ࠄࠇ

ࠆ1D ࠗࠝࡦ߿&R2 㕙ߩ
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76౮⌀㧦⻠Ṷળߩᓟߢߩ౮⌀㧚⻠Ṷ⠪ߩ ,UHN0XNKDPHGVLQ ᢎ᝼ߪ೨೉ฝ߆ࠄੑੱ⋡ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯ ࠮ࡒ࠽࡯ႎ๔ᦠ
2009 ᐕᐲ╙ 3 ࿁ 2009 ᐕ 12 ᦬ 17 ᣣ ࠛ࠴࡟ࡦࠫࠝࠠࠪၮࠍ฽߻ 76H) ⺃ዉ૕ߦࠃࠆ
Ᏹ࿶᦭ᯏ⿥વዉ૕ߩ㐿⊒ 㐳ጟᛛⴚ⑼ቇᄢቇᎿቇㇱߩ੹ਭ଻ ㆐㇢ಎᢎ᝼ࠍ⻠Ꮷߣߒߡ᜗߈㧘਄⸥⴫㗴ߩ߅⹤ࠍુߞߚ㧚 ᳓⚛⚿วࠍ૶ߞߚ⚿᥏᭴ㅧ೙ᓮߣߘࠇߦ઻߁‛ᕈ೙ᓮࠍ⋡ᜰߒ㧘ᣢ⍮᦭ᯏ⿥વዉ૕߿㘃✼‛⾰ࠍෳᾖߒߥ߇ࠄ㧘ᣂⷙዉ㔚ᕈᚑಽಽሶ BEDO-TSeF ߩวᚑᴺࠍ㐿⊒ߒߚ㧚ߎߩಽሶߩ㍲૕ߪኻᚑಽߦࠃࠄ
ߕN-ဳߣ๭߫ࠇࠆಽሶలႯ᭽ᑼࠍᜬߜ㧘ᭂૐ᷷߹ߢ቟ቯߥ㊄ዻ⁁ᘒࠍ଻ߞߚ㧚ᧄಽሶࠍൻቇୃ㘼ߔࠆ੐ࠍ⠨߃㧘DMEDO-TTF ࠍวᚑߒߚ㧚ߎߩಽሶ߆ࠄᓧࠄࠇࠆ Au(CN)4 ߣߩ 2:1 ㍲૕ߪ㧘⒳‫ߩޘ‬Ⅳ⁁ࠛ࡯࠹࡞ࠍ⚿᥏ṁᇦߣߒߡ฽߻੐߇಴᧪ߚ㧚ߘࠇࠄߪ⚿᥏᭴ㅧߣߒߡNH-, NL-ဳߣ๭߫ࠇࠆ 2 ⒳㘃ߦᄢ೎ߐࠇࠆ᦭ᯏ⿥વዉ૕ߢ޽ߞߚ㧚Ⅳ⁁ࠛ࡯࠹࡞ಽሶߩ⒳㘃 ಽሶ૕Ⓧߣಽሶߩᒻ⁁ ߣ⿥વዉォ⒖᷷ᐲߩ⋧㑐߇⼏⺰ߐࠇߚ㧚 ⾰⇼ᔕ╵ߢߪ㧘วᚑൻቇ⊛ߥᣇᴺ⺰࡮ౕ૕⊛ߥᚻᴺ߆ࠄ㧘⿥વዉߩᯏ᭴߹ߢᐢ޿▸࿐ߩౝኈ߇⼏⺰ߐࠇߚ㧚߹ߚ㧘࠮ࡒ࠽࡯ߪ⚳ᆎߥߏ߿߆ߥ㔓࿐᳇ߢㅴ߼ࠄࠇ㧘⧯ᚻ⎇ⓥ⠪߳ߩ⦟޿ೝỗ߇ਈ߃ࠄࠇߚ㧚
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2

6H

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5

2

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6H

5

%('276H)
55 2&+&+2
'0('276H)5 &+N-(DMEDO-TSeF)2[Au(CN)4](THF)ߩ⿥વዉ
ォ⒖᷷ᐲㄭறߢߩᲧᛶ᛫ߩ᷷ᐲᄌൻ

࠮ࡒ࠽࡯ᓟߩ߭ߣࠦࡑ(ਛᄩ߇੹ਭ଻వ↢)㧔ᢥ㧦ℂቇ⎇ⓥ⑼ൻቇᢎቶ೨㉿శᒾૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯⍫ᜬ⑲⿠㧕

77

運営委員会よりኙ೷ଏ⛎⁁ᴫ
ศ↰ࠠࡖࡦࡄࠬ
ᶧ૕ࡋ࡝࠙ࡓଏ⛎㊂‫ޓ‬ᐔᚑᐕᐲ
ℂቇ⎇ⓥ⑼࡮ൻቇ
ℂቇ⎇ⓥ⑼࡮‛ℂቇ╙৻ℂቇ⎇ⓥ⑼࡮ߘߩઁ
ੱ㑆࡮ⅣႺቇ⎇ⓥ⑼
Ꮏቇ⎇ⓥ⑼
ㄘቇ⎇ⓥ⑼
ࠛࡀ࡞ࠡ࡯⑼ቇ⎇ⓥ⑼කቇ⎇ⓥ⑼‛⾰㧙⚦⢩⛔วࠪࠬ࠹ࡓ᜚ὐ
ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯࡮⎇ⓥㇱ㐷ห࠮ࡦ࠲࡯࡮౒ห೑↪ⵝ⟎‫ޓޓޓ‬ว‫⸘ޓޓޓ‬න૏㧦࡝࠶࠻࡞

᦬

᦬

᦬

᦬

᦬

᦬

ว⸘

㪈㪈㪐㪍
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㪈㪊㪐㪏㪋

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ᶧ૕⓸⚛ଏ⛎㊂‫ޓ‬ᐔᚑᐕᐲ
ℂቇ⎇ⓥ⑼࡮ൻቇ
ℂቇ⎇ⓥ⑼࡮‛ℂቇ╙৻ℂቇ⎇ⓥ⑼࡮ߘߩઁ
ੱ㑆࡮ⅣႺቇ⎇ⓥ⑼
Ꮏቇ⎇ⓥ⑼
ㄘቇ⎇ⓥ⑼
ࠛࡀ࡞ࠡ࡯⑼ቇ⎇ⓥ⑼කቇ⎇ⓥ⑼කቇㇱઃዻ∛㒮
଻ஜ▤ℂ࠮ࡦ࠲࡯
↢๮⑼ቇ⎇ⓥ⑼ᖱႎቇ⎇ⓥ⑼࠙ࠗ࡞ࠬ⎇ⓥᚲౣ↢ක⑼ቇ⎇ⓥᚲ
᡼኿ᕈห૏ర⚛✚ว࠮ࡦ࠲࡯
ⅣႺ଻ో࠮ࡦ࠲࡯
ࡈࠖ࡯࡞࠼⑼ቇᢎ⢒⎇ⓥ࠮ࡦ࠲࡯

‛⾰㧙⚦⢩⛔วࠪࠬ࠹ࡓ᜚ὐ
ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯࡮⎇ⓥㇱ㐷ห࠮ࡦ࠲࡯࡮౒ห೑↪ⵝ⟎‫ޓޓޓ‬ว‫⸘ޓޓޓ‬78න૏㧦࡝࠶࠻࡞

᦬

᦬

᦬

᦬

᦬

᦬

ว⸘

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ቝᴦࠠࡖࡦࡄࠬ
ᶧ૕ࡋ࡝࠙ࡓଏ⛎㊂‫ޓ‬ᐔᚑᐕᐲ
ᶧ૕ࡋ࡝࠙ࡓଏ⛎㊂ൻቇ⎇ⓥᚲ㨾㩒㩣㩁㩨㨺ℂᎿቇ⎇ⓥᚲ
↢ሽ࿤⎇ⓥᚲ
ㄘቇ⎇ⓥ⑼
ℂቇ⎇ⓥ⑼
Ꮏቇ⎇ⓥ⑼
㨾㩒㩣㩁㩨㨺⑼ቇ⎇ⓥ⑼ૐ᷷‛⾰⑼ቇ⎇ⓥ㩈㩧㩊㨺ߘߩઁว⸘න૏㧦࡝࠶࠻࡞

᦬

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᦬

᦬

ว⸘


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ᶧ૕⓸⚛ଏ⛎㊂‫ޓ‬ᐔᚑᐕᐲ
ᶧ૕⓸⚛ଏ⛎㊂
ൻቇ⎇ⓥᚲ㨾㩒㩣㩁㩨㨺ℂᎿቇ⎇ⓥᚲ
↢ሽ࿤⎇ⓥᚲ
ㄘቇ⎇ⓥ⑼
㒐ἴ⎇ⓥᚲ
ℂቇ⎇ⓥ⑼
Ꮏቇ⎇ⓥ⑼
㨾㩒㩣㩁㩨㨺⑼ቇ⎇ⓥ⑼ૐ᷷‛⾰⑼ቇ⎇ⓥ㩈㩧㩊㨺ߘߩઁว⸘න૏㧦࡝࠶࠻࡞

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ว⸘

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᦬᦬᩵ࠠࡖࡦࡄࠬ
ᶧ૕ࡋ࡝࠙ࡓଏ⛎㊂‫ޓ‬ᐔᚑᐕᐲ
Ꮏቇ⎇ⓥ⑼࡮㔚ሶᎿቇᎿቇ⎇ⓥ⑼࡮㔚᳇ᎿቇᎿቇ⎇ⓥ⑼࡮᧚ᢱൻቇ
Ꮏቇ⎇ⓥ⑼࡮‛⾰ࠛࡀ࡞ࠡ࡯ൻቇ

Ꮏቇ⎇ⓥ⑼࡮㜞ಽሶൻቇᎿቇ⎇ⓥ⑼࡮วᚑ࡮↢‛ൻቇᎿቇ⎇ⓥ⑼࡮ൻቇᎿቇ
Ꮏቇ⎇ⓥ⑼࡮ಽሶᎿቇ
ว‫⸘ޓޓޓ‬න૏㧦࡝࠶࠻࡞

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ว⸘


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ᶧ૕⓸⚛ଏ⛎㊂‫ޓ‬ᐔᚑᐕᐲ
Ꮏቇ⎇ⓥ⑼࡮ㇺᏒⅣႺᎿቇᎿቇ⎇ⓥ⑼࡮␠ળၮ⋚ᎿቇᎿቇ⎇ⓥ⑼࡮᧚ᢱᎿቇ
Ꮏቇ⎇ⓥ⑼࡮㔚᳇ᎿቇᎿቇ⎇ⓥ⑼࡮㔚ሶᎿቇᎿቇ⎇ⓥ⑼࡮᧚ᢱൻቇ
Ꮏቇ⎇ⓥ⑼࡮‛⾰ࠛࡀ࡞ࠡ࡯ൻቇ

Ꮏቇ⎇ⓥ⑼࡮ಽሶᎿቇ
Ꮏቇ⎇ⓥ⑼࡮㜞ಽሶൻቇᎿቇ⎇ⓥ⑼࡮วᚑ࡮↢‛ൻቇᎿቇ⎇ⓥ⑼࡮ൻቇᎿቇ
Ꮏቇ⎇ⓥ⑼࡮శ࡮㔚ሶℂᎿቇᢎ⢒⎇ⓥ࠮ࡦ࠲࡯వ┵කᎿቇ⎇ⓥ࡙࠾࠶࠻࿖㓙Ⲣวഃㅧ࠮ࡦ࠲࡯
‛⾰㧙⚦⢩⛔วࠪࠬ࠹ࡓ᜚ὐ
↥ቭቇㅪ៤࠮ࡦ࠲࡯
ว‫⸘ޓޓޓ‬න૏㧦࡝࠶࠻࡞

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79

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⃝⏣Ᏻᶞ  ࠊ኱ሯ᫭ᘯ  ᐮ๣౪⤥᪋タ㟁  ヰ ᪂஭ᩄ୍  ࠊᯇᾆᘯ࿴ 
ᶓᒣᾈ἞ ᐮ๣㓄㏦ࢺࣛࢵࢡ ྜྷ   ⏣Ᏹ   ἞  ᱇

໭㒊ᵓෆ࣭⌮Ꮫ㒊㸴ྕ㤋 /1&(௒ᮧ㝯୍  ᮏ㒊ᵓෆ࣭ᕤᏛ㒊ᾮయ❅⣲㈓ⶶᡤ

ᐑᔱ┤ᶞ  ࠊ୰ᮧ⿱அ  ໬Ꮫ◊✲ᡤ࣭ᴟప

ᴋ⏣ᩄஅ Ᏹ἞  ࠊᑎᔱᏕோ Ᏹ἞ ≀ᛶ໬Ꮫᐇ㦂ᐊ$ ࢡࣛࢫࢱ࣮࣭ᾮయ❅⣲ &(% ࢡࣛࢫࢱ࣮࣭ᴟప

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ᆅୗ㹀㸮㸲ᐊప ≀㉁⛉Ꮫ◊✲ࢭࣥࢱ࣮㸱㸵㸳㸳㸴 ኱Ꮫ㝔⌮Ꮫ◊✲⛉ ᵓ 㐀 ⏕ ⌮ Ꮫ 㟁Ẽ➨୍ศ㤋ᆅ㝵 ⸨ྜྷዲ๎  㸿㸫㸮㸮㸰ᐊ

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኱Ꮫ㝔ே㛫࣭⎔ቃᏛ
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 ኱Ꮫ㝔་Ꮫ◊✲⛉  㧗ḟ⬻ᶵ⬟⥲ྜ  ◊✲ࢭࣥࢱ࣮
ཎᏊ᰾ᕤᏛ
㸳㸶㸲㸲  ኱Ꮫ㝔ே㛫࣭ ⎔ቃᏛ◊✲⛉  ⥲ྜே㛫Ꮫ㒊80㸶 ኱Ꮫ㝔ᕤᏛ◊✲⛉  ᮦ ᩱ ᕤ Ꮫ  ᪧ⏘⛉⑓Ჷᯇᶫ┾⏕㸯㝵࢞ࢫࣂࢵࢢᐊ

㧗ḟ⬻ᶵ⬟⥲ྜ◊✲ࢭࣥࢱ࣮ ⑓ 

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯‫ޓ‬ኾછᢎຬฬ★
ᐔᚑᐕ᦬ᣣ

᳁‫ޓ‬ฬ

⡯

Ỉ‫ޓ↰ޓ‬቟‫ޓ‬᮸ᢎ‫ޓ‬᝼⍫‫ޓ‬ᜬ‫⿠ޓ⑲ޓ‬ᢎ‫ޓ‬᝼ኹ‫ޓ‬᎑‫ޓ‬ቁ‫ޓ‬ੳᢎ‫ޓ‬᝼૒‫⼾ޓޓޓᧁޘ‬ಎᢎ᝼᧻‫ޓ‬ේ‫ޓޓޓ‬᣿ಎᢎ᝼૒‫ޓޓ⮮ޓޓ‬ᥓಎᢎ᝼ᣂ‫ޓ‬੗‫ޓ‬ᢅ‫৻ޓ‬ഥ‫ޓ‬ᢎᄢ‫ޓ‬Ⴆ‫ޓᤩޓ‬ᒄഥ‫ޓ‬ᢎਛ‫ޓ‬㊁‫ޓ⟵ޓ‬᣿ഥ‫ޓ‬ᢎᤐᣣ੗‫ޓޓޓ‬᣹ഥ‫ޓ‬ᚻㅪ‫ޓޓޓ⛊ޓޓޓ‬వ㨀㧱㧸VDZDGD#OWPN\RWRXDFMS㨀㧱㧸\DPRFKL#NXFKHPN\RWRXDFMS㨀㧱㧸
WHUDVKLP#VFON\RWRXDFMS㨀㧱㧸VDVDNL#VFSK\VN\RWRXDFMS㨀㧱㧸
DNLUD#VFSK\VN\RWRXDFMS㨀㧱㧸VEVDWR#HPELRSK\VN\RWRXDFMS㨀㧱㧸
WRVKLND]#VFSK\VN\RWRXDFMS㨀㧱㧸
RWVXND#NXFKHPN\RWRXDFMS㨀㧱㧸QDNDQR#NXFKHPN\RWRXDFMS㨀㧱㧸NDVXJDLQ#VFSK\VN\RWRXDFMSૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯‫ޓ‬ද⼏ຬฬ★
ᐔᚑᐕ᦬ᣣ

ද⼏ຬฬ

೨‫ޓ‬Ꮉ‫ⷡޓޓޓ‬Ỉ‫ޓ↰ޓ‬቟‫ޓ‬᮸⍫‫ޓ‬ᜬ‫⿠ޓ⑲ޓ‬ኹ‫ޓ‬᎑‫ޓ‬ቁ‫ޓ‬ੳ೨‫ޓ‬㊁‫ޓ‬ᖝ‫ޓ‬ノਃ‫ޓᧁޓ‬㇌‫ޓ‬ᄦศ‫⦟ޓ৻ޓ᧛ޓ‬⮮‫ޓ‬ศ‫ޓ‬ᅢ‫ޓ‬ೣ⑔‫ޓ‬ጊ‫⋥ޓ⑲ޓ‬ട‫ޓ⮮ޓ‬ඳ‫┨ޓ‬㋈‫ޓޓޓᧁޓ‬ታ౉‫ޓ‬ᳯ‫ޓ৻ޓ‬ᶈዊ‫ޓ‬㊁‫ޓ‬ノ‫↵ޓ‬㊁ਛቯ㓶‫ޓ‬੐ോㇱ㐳ᚲ‫ޓ‬ዻੱ࡮Ⅳ⎇ⓥ⑼
㧝ภᆔຬ
㧸㨀㧹
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ℂቇ⎇ⓥ⑼‫ޓ‬
㧟ภᆔຬ
ℂቇ⎇ⓥ⑼
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ℂቇ⎇ⓥ⑼
㧟ภᆔຬ
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ൻቇ⎇ⓥᚲ‫ޓ‬
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ᐙ‫ޓ‬੐

ㅪ‫ޓޓޓ⛊ޓޓޓ‬వ㨀㧱㧸
PDHJDZDVDWRUXZ#N\RWRXDFMS㨀㧱㧸VDZDGD#OWPN\RWRXDFMS㨀㧱㧸\DPRFKL#NXFKHPN\RWRXDFMS㨀㧱㧸
WHUDVKLP#VFON\RWRXDFMS㨀㧱㧸PDHQR#VFSK\VN\RWRXDFMS㨀㧱㧸
PLNL#NXFKHPN\RWRXDFMS㨀㧱㧸
N\KY#NXFKHPN\RWRXDFMS㨀㧱㧸\RVKL#HPELRSK\VN\RWRXDFMS㨀㧱㧸IXNX\DPD#NXKSN\RWRXDFMS㨀㧱㧸NDWRKLUR#SKDUPN\RWRXDFMS㨀㧱㧸VX]XNL#NXHHN\RWRXDFMS㨀㧱㧸
LULH#NDLVN\RWRXDFMS㨀㧱㧸
RQR#VFON\RWRXDFMS㨀㧱㧸
MLPXEXFKR#RIILFHVFLN\RWRXDFMS

81

ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯‫ޓ‬ㆇ༡ᆔຬળᆔຬฬ★
(PDLO

1DPH೨‫ޓ‬Ꮉ‫ⷡޓޓޓ‬PDHJDZDVDWRUXZ#N\RWRXDFMS

ੱ࡮Ⅳ



Ỉ‫ޓ↰ޓ‬቟‫ޓ‬᮸

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㧸㨀㧹



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

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

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ℂ‫ޓ‬ቇ



೨‫ޓ‬㊁‫ޓ‬ᖝ‫ޓ‬ノ

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

ศ‫⦟ޓ৻ޓ᧛ޓ‬N\KY#NXFKHPN\RWRXDFMS

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

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

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

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ℂ‫ޓ‬ቇ



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ਛ‫ޓ᧛ޓ‬ᱞ‫ޓ‬ᕡ

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ਛ‫ޓ⵨ޓ᧛ޓ‬ਯ

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Ꮏ‫ޓ‬ቇ



⩲‫ޓ‬㊁‫ᧂޓ‬⍮ᄩVXJDQR#NXHHN\RWRXDFMSᎿ‫ޓ‬ቇ

ጊ‫ޓ↰ޓ‬㓷‫଻ޓ‬

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

⮮‫ޓ‬ේ‫ޓ⋥ޓ‬᮸

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ੱ࡮Ⅳ



⊕‫ޓ‬੗‫ޓ‬ᐽ‫ޓ‬ਯVKLUDL#SHHQHUJ\N\RWRXDFMS

ࠛࡀ⑼



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ℂ‫ޓ‬ቇ

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‫ޟ‬੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯⹹㧔LTM࠮ࡦ࠲࡯⹹㧕‫ߩ߳ޠ‬ᛩⓂߩ߅⺃޿ਗ߮ߦේⓂߩ૞ᚑⷐ㗔Call for Manuscripts for"Low Temperature and Materials Sciences (Kyoto University)"೨Ꮉ ⷡ✬㓸ᆔຬળ
1੩ㇺᄢቇᄢቇ㒮ੱ㑆࡮ⅣႺቇ⎇ⓥ⑼㧘2੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯
S. Maegawa 1,2 and Editorial Committee 2
1
Graduate School of Human and Environmental Studies, Kyoto University,
2
Research Center for Low Temperature and Materials Sciences, Kyoto UniversityᚲዻߩᓟߦAbstractࠍᢙⴕ㧘⧷ᢥߢᦠ޿ߡߊߛߐ޿㧚ߪߓ߼ߦ ‫ޟ‬੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯⹹㧔ㅢ⒓㧦LTM࠮ࡦ࠲࡯⹹㧘⧷ᢥฬ㧦Low Temperature andMaterials Sciences (Kyoto University)㧕ߢߪ㧘ૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯߇ឭଏߔࠆኙ೷࡮౒ㅢᯏེ
ߩ೑↪⠪ߩ⊝᭽߿㑐ଥ⠪ߩ⊝᭽ࠃࠅ‫⎇ޟ‬ⓥࡁ࡯࠻㨭,‫ޟ‬ᛛⴚࡁ࡯࠻㨭,‫ߩ߳ޠࡦࡠࠨޟ‬ᛩⓂࠍ᱑ㄫ޿ߚ
ߒ߹ߔ㧚ᛩⓂߐࠇ߹ߒߚේⓂߪ㧘✬㓸ᆔຬળߢክ⼏ߩ߁߃ឝタߩนุࠍ᳿ቯ޿ߚߒ߹ߔ㧚ᛩⓂߦ޽ߚߞߡߪ㧘㔚ሶࡈࠔࠗ࡞ࠍਅ⸥† ተߦ߅ㅍࠅߊߛߐ޿㧚߹ߚ㧘૬ߖߡශ೚ේⓂ߽† ተߦㇷㅍ߹ߚߪᜬෳ޿ߚߛ߈߹ߔࠃ߁߅㗿޿޿ߚߒ߹ߔ㧚ೋᩞ೚ࠅߪ㔚ሶࡈࠔࠗ࡞ࠃࠅ૞ᚑߒ߹ߔߩߢ㧘એਅ╙2┨ࠍᓮෳᾖߩ߁߃MS-Wordࠍ↪޿ߡ૞ᚑߒߡߊߛߐ޿㧚InDesign߹ߚߪQuarkXPressߩࡈࠔࠗ࡞ߢ߽⚿᭴ߢߔ㧚ߥ߅㧘✬㓸ᆔຬળ߆ࠄߩේⓂଐ㗬߽ⴕ޿߹ߔߩߢ㧘ଐ㗬ߐߖߡ޿ߚߛ޿ߚ㓙ߦߪࠃࠈߒߊ߅㗿޿↳ߒ਄ߍ߹ߔ㧚
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A4↪⚕ߩ਄ਅᏀฝߦ25 mmߕߟࡑ࡯ࠫࡦࠍߣߞߡ㧘๺ᢥ⴫㗴㧘⧷ᢥ⴫㗴㧘๺ᢥ⪺⠪࡮ᚲዻ㧘⧷ᢥ⪺⠪࡮ᚲዻ㧘ࠕࡉࠬ࠻࡜ࠢ࠻㧔⧷ᢥ㧕㧘ᧄᢥ㧘ෳ⠨ᢥ₂㧘⪺⠪౮⌀㧔35mm㧔᏷㧕×40mm㧔㜞ߐ㧕㧕㧘⪺⠪⇛ᱧߩ㗅ߦ⸥ㅀߒߡߊߛߐ޿㧚ᧄᢥߪ1ⴕ޽ߚࠅోⷺ45ᢥሼ㧘1 ࡍ࡯ࠫ޽ߚࠅ40ⴕࠍၮḰߦߒߡߊߛ
ߐ޿㧚ṽሼ࡮߆ߥ࡮ࠞ࠽ߦߪMS᣿ᦺ㧘⧷ሼ࡮ᢙሼߦߪTimes New Roman㧘ᧄᢥਛߩ⷗಴ߒߦߪMSࠧ
ࠪ࠶ࠢ㧔߹ߚߪߎࠇࠄߦḰߓࠆᦠ૕㧕ࠍ૶↪ߒߡߊߛߐ޿㧚⴫㗴ߪ14 point㧘⪺⠪࡮ᚲዻߪ12 point㧘ᧄᢥߪ10.5 point㧘࿑࡮⴫ߩࠠࡖࡊ࡚ࠪࡦߪ10 point ߩᢥሼࠍ↪޿ߡߊߛߐ޿㧚⴫㗴ߩ೨ߦⓨⴕࠍ3ⴕ౉ࠇߡߊߛߐ޿㧚ᧄᢥਛ㧘‛ℂ⸥ภࠍ⴫ߔ⸥ภߪᢳ૕㧔ࠗ࠲࡝࠶ࠢ㧕㧘න૏⸥ภߪ┙૕㧔ࡠ࡯ࡑࡦ㧕ߢ⴫⸥ߒ㧘‛ℂ㊂ߣන૏ߩ㑆߿ᢙሼߣ⸥ภߩ㑆ߦߪࠬࡍ࡯ࠬࠍ1୘౉ࠇߡߊߛߐ޿㧚߹ߚ㧘┨ߩ㑆ߦ߽ࠬࡍ࡯ࠬࠍ1ⴕ⸳ߌߡߊߛߐ޿㧚ฏ⺒ὐߪ‫ޟ‬㧚㧘‫޿ߐߛߊߡߒ৻⛔ߦޠ‬㧚࿑ߪ㜞⸃௝ᐲߩ߽ߩࠍᧄᢥਛߦ⾍ࠅઃߌߡߊߛߐ޿㧚ࠞ࡜࡯ශ೚߇น⢻ߢߔߩߢ㧘ߢ߈ࠆߛߌࠞ࡜
࡯ߩ࿑ࠍ૶↪ߒߡߊߛߐ޿㧚ߘߩઁߩ⚦ㇱߦߟ޿ߡߪ㧘ᧄⓂߥࠄ߮ߦਅ⸥Ref. [1,2] ߩࠬ࠲ࠗ࡞ࠍෳ⠨ߦߒߡߊߛߐ޿㧚ෳ⠨ᢥ₂=ᒁ↪⇟ภ?⪺⠪ฬ㔀⹹ฬᏎᢙᦨೋߩࡍ࡯ࠫ⇟ภᐕߩ㗅ߢ߅㗿޿ߒ߹ߔ㧚଀㧕[1] ኹ᎑ቁੳ, ੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯⹹ , 26 (2005).
[2] K. Mibu, Low Temperature and Materials Sciences (Kyoto University) , 13 (2003).
† ੩ㇺᄢቇૐ᷷‛⾰⑼ቇ⎇ⓥ࠮ࡦ࠲࡯⹹✬㓸ᆔຬળ, ‫ޥ‬606-8501੩ㇺᏒᏀ੩඙ศ↰ᧄ↸,
Tel:075-753-9521 Fax: 075-753-9521 E-mail:terashim@scl.kyoto-u.ac.jp(ኹ᎑ቁੳ)83 ㄭ㗃ߩ਎ߩਛߪ෩ߒߐࠍჇߔ߫߆ࠅߢ޽ࠆ‫ޕ‬వᣣߩ੐ᬺ઀ಽߌߢߪ‛⾰࡮᧚ᢱ⎇ⓥᯏ᭴߇
ℂ⎇ߣ⛔วߔߴ߈ߣ޿߁ᗧ⷗߽᜼ߍࠄࠇࠆߥߤ‫⑼ޔ‬ቇߦኻߒߡ߽ኈ⿔ߥߊࡔࠬ߇౉ࠇࠄࠇࠃ
߁ߣߒߡ޿ࠆ‫⾗ޕ‬Ḯߦਲߒ޿ᚒ߇࿖߇⑼ቇᛛⴚ┙࿖ߣߒߡ↢߈ᱷߞߡ޿ߊߚ߼ߩၮ⋚߇ᄢ߈ߊំࠄߏ߁ߣߒߡ޿ࠆ‫⑼ޕ‬ቇߦኻߒߎߩࠃ߁ߥ෩ߒ޿⋡߇ะߌࠄࠇࠆߩߪ‫⎇ޔ‬ⓥᚑᨐ߇৻⥸ߩੱ‫ߊࠃߦޘ‬⍮ࠄࠇߡ޿ߥ޿‫⺑ߜࠊߥߔޔ‬᣿⽿છ߇లಽߦᨐߚߐࠇߡ޿ߥ޿ߎߣ߽ᄢ߈ߥⷐ
࿃ߢ޽ࠈ߁‫ޕ‬ ᧄ⹹ߪ੩ㇺᄢቇߢⴕࠊࠇߡ޿ࠆ⎇ⓥ߿ߘࠇߦᰳ߆ߖߥ޿ኙ೷೑↪࡮ଏ⛎ߩ⁁ᴫߦߟ޿ߡቇ
ౝᄖߩ⊝᭽ߦᐢߊ⍮ߞߡ㗂ߊߚ߼ߩ߽ߩߢ޽ࠆ‫✬ޕ‬㓸ᓟ⸥ࠍᦠߊᯏળࠍ㗂޿ߚ੐ߪ‫ޔ‬એ਄ߩࠃ߁ߥߎߣࠍౣ⹺⼂ߔࠆ਄ߢ㕖Ᏹߦ᦭ᗧ⟵ߢ޽ߞߚ߇‫ߣࠇߘޔ‬หᤨߦਇ቟߽ࠃ߉ߞߚ‫ࠇߘޕ‬ߪᧄ⹹߇లಽߥᓎഀࠍᜂߞߡ޿ࠆ߆‫ߜࠊߥߔޔ‬ᄙߊߩੱ‫߁޿ߣ߆ࠆ޿ߡࠇ߹⺒ߦޘ‬ਇ቟ߢ޽ࠆ‫⎇ߩࠇߙࠇߘޕ‬ⓥ⚫੺⸥੐ߩ࡟ࡌ࡞߇㕖Ᏹߦ㜞޿੐ߪ㑆㆑޿ߥ޿‫߇ࠇߘޔ߇ߛޕ‬ኾ㐷ᄖߩᣇ‫߽ߡߞߣߦޘੱߩ⥸৻ߪߡ޿߭ޔޘ‬ಽࠅ߿ߔ޿߽ߩߢ޽ࠆ߆ߣ޿߁ߣ‫ߛ߹ߛ߹ޔ‬లಽߢߪߥ޿ߢ޽ࠈ߁‫ޕ‬ ੩ㇺᄢቇߩࠕࠢ࠹ࠖࡆ࠹ࠖ࡯ࠍࠃࠅ⦟ߊ⍮ߞߡ㗂ߊߚ߼ߦ߽‫ࠅࠃޔ‬㝯ജ⊛ߢ⺒⠪ߦᗲߐࠇࠆ࠮ࡦ࠲࡯⹹ࠍ⋡ᜰߒߡ޿߈ߚ޿‫⪺ߪߦ߼ߚߩߘޕ‬⠪ߩ⊝᭽߳ߩᵈᢥ߇ᄙߊߥࠆ੐ߪㆱߌࠄ
ࠇߥ޿߇‫ߪࠈߎߣߩߘޔ‬ᗧࠍ᳹ࠎߢ޿ߚߛ޿ߡߏදജࠍ߅㗿޿ߒߚ޿‫ޕ‬
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