QSNSInternational Symposium on
Quantum System and Nuclear Spin Related Phenomena

February 18-20, 2015
Miyagi-Zao Royal Hotel, Miyagi, Japan

Preface
This symposium aims to discuss the important results obtained in ERATO Nuclear
Spin Electronics Project（ERATO-NSEP）with the researchers of the world, whohave interests in the related topics, at the end of the ERATO project. The nuclear
spin related phenomena are recently spreading to many fields, such as quantum lowdimensional systems and novel materials. Especially, spintronics field is very importantand it is great pleasure to have this symposium together with Graduate Programin Spintronics, Tohoku University. I wish many fruitful discussions through thesymposium.
Prof. Yoshiro Hirayama
Chair, QSNS
Director, ERATO-NSEP, JST
Coordinator, GP-Spin, Tohoku University

Conference Scope•

Quantum transport in low-dimensional systems•

Integer and fractional quantum Hall effects•

Manipulation of nuclear spins in semiconductor quantum systems•

Highly-sensitive NMR measurements of semiconductor quantum systems•

Electron-spin/nuclear-spin interactions•Nanoprobe characterization and local nuclear resonance

Organizing & Program Committee•

Yoshiro Hirayama（Chair）Tohoku Univ., ERATO-NSEP•

Koji Muraki NTT Basic Research Labs., ERATO-NSEP•

Katsushi Hashimoto Tohoku Univ., ERATO-NSEP•

Hongwu Liu Tohoku Univ., ERATO-NSEPThis symposium is co-sponsored by JST ERATO Nuclear Spin
Electronics Project（ERATO-NSEP）and Tohoku University
Graduate Program in Spintronics (GP-Spin).

1International Symposium on
Quantum System and Nuclear Spin Related Phenomena（QSNS）
February 18th Wed - 20th Fri
Miyagi-Zao Royal Hotel, Miyagi, JapanQSNS ProgramFebruary 18（Wednesday）
Opening
Plenary Session：
Plenary 14：00-14：40	Spin Orbit Interaction and Nuclear Spins in Nanowires for Majorana

Fermions and other Exotic Bound States（Plenary）
Daniel Loss
University of Basel

11

Session Ⅰ：Electron spin & nuclear spin interactions
Ⅰ－ 1 14：40-14：55	Cooperative nuclear spin ensemble in bilayer quantum Hall effectat total filling 2
M. H. Fauzi1,2, Y. Hama3, S. Watanabe4, and Y. Hirayama1,2,5,6	1
Department of physics, Tohoku University, 2Interdepartmental
Doctoral Degree Program for Multi-dimensional Materials Science
leaders, Tohoku University, 3Center for Emergent Matter Science,RIKEN, 4Department of physics, Kanazawa University, 5ERATONuclear Spin Electronics Project, JST, 6WPI-AIMR, Tohoku
University

13Ⅰ－ 2 14：55-15：10	NMR response of nuclear-spin helix in quantum wires withhyperfine and spin-orbit interactionPeter Stano and Daniel Loss
Quantum system theory research team, CEMS, RIKEN

15

Ⅰ－ 3 15：10-15：25	RKKY interaction and anti-ferromagnetic helical nuclear spinorder in interacting 13C carbon nanotubes
Chen-Hsuan Hsu1, Peter Stano1,2, and Daniel Loss1,3	1 Center for Emergent Matter Science, RIKEN, 2 Institute ofPhysics, Slovak
Academy of Sciences, 3Department of Physics, University of Basel

17Coffee break3

Session Ⅱ：Two dimensional and optical control
Ⅱ－ 1 15：55-16：25	Strain Enhancement of Optical Nuclear Polarization in GaAs（invited）	Ryan M. Wood1, Dipta Saha2, John L. Reno3,Christopher J. Stanton2, and Clifford R. Bowers1,21	Dept. of Chemistry, University of Florida, 2Dept. of Physics,
University of Florida, 3Sandia National Laboratories

19Ⅱ－ 2 16：25-16：55	Optical nuclear spin polarization in quantum Hall regime probed by theresistive detection method at Laudau level filling factor ν=2/3（invited）	K. Akiba1, S. Kanasugi2, T. Yuge3, K. Nagase2,4, and Y. Hirayrama2, 4	1Tokyo University of Agriculture and Technology, 2Tohoku
University, 3Osaka University, 4ERATO Nuclear Spin Electronics
Project, JST21

Ⅱ－ 3 16：55-17：10	Quasiexciton-Quasielectron Trion Emission in the Fractional
Quantum Hall Effect Regime	S. Nomura1, M. Yamaguchi2, H. Tamura2, T. Akazaki2 ,Y. Hirayama3,4,5, M. Korkusinski6, and P. Hawrylak6
1
Division of Physics, University of Tsukuba, 2NTT Basic Research	Laboratories, NTT Corporation, 3Department of Physics, Tohoku
University, 4 WPI-AIMR, Tohoku University, 5 ERATO-JST,6Emerging Technologies Division, NRC

23

Poster Session： 17：30-19：00
Poster display is possible through the whole symposium.	Manifestation of Edge Channel Transport in InAs/GaSb TwoDimensional Topological Insulators
Kyoichi Suzuki, Yuichi Harada, Koji Onomitsu, and Koji Muraki
NTT Basic Research Laboratories, NTT Corporation

25P2
Dynamic nuclear polarization in InSb Hall bar and Corbino Disc Devices	K.F. Yang 1, 2，H.W. Liu 1,2,3，K. Nagase 1,2，T.D. Mishima 4，M.B.
Santos4，and Y. Hirayama1, 2, 51	Department of Physics, Tohoku University, 2ERATO Nuclear SpinElectronics Project, JST, 3State Key Lab of Superhard Materials
and Institute of Atomic and Molecular Physics, Jilin
University, 4Homer L. Dodge Department of Physics
and Astronomy, University of Oklahoma, 5WPI-AIMR,Tohoku University27P3 	Transport Characteristics of Trench-Gate InSb Quantum-Point-Contact	T. Masuda1, K. Sekine1, H. W. Liu1,2,3, K. F. Yang1,2, K. Nagase1,M. H. Fauzi1,4, K.S. Wickramasinghe5, T. D. Mishima5,M. B. Santos5, and Y. Hirayama1, 2, 4, 6	1Department of Physics, Tohoku University, 2ERATO Nuclear Spin
Electronics Project, JST, 3State Key Lab of Superhard Materials
and Institute of Atomic and Molecular Physics, Jilin University,

29P144

Interdepartmental Doctoral Degree Program for Multidimensional Materials Science leaders, Tohoku University, 5Homer
L. Dodge Department of Physics and Astronomy, University ofOklahoma, 6WPI-AIMR, Tohoku UniversityP4	Asymmetric thiadiazole ligands for spin-coupled bimetallic
complexes with advanced magnetic features
Denis Bittner and Eva Rentschler
Institute of Inorganic Chemistry, University of Mainz

31P5Addressable surface deposited clusters by thiol ene click chemistry?
Patrick Czaja and Eva Rentschler
Institute of Inorganic Chemistry, Johannes Gutenberg-University Mainz,

33	Observation of the local density of states of MoS2 nanosheets usingatomic force microscope-assisted tunneling spectroscopy	Amin Vakhshouri1, Katsushi Hashimoto1,2, and Yoshiro Hirayama1,2,3	1Department of Physics, Graduate School of Science, Tohoku University,
2
ERATO Nuclear Spin Electronics Project, JST, 3WPI-AIMR, Tohoku
University

35

Scanning Gate Microscopy in Hall Bar at ~100 mK
P7	Toru Tomimatsu1,2, Katsushi Hashimoto1,2, Ken Sato1, andYoshiro Hirayama1,2	1Department of Physics, Tohoku University, 2ERATO Nuclear
Spin Electronics Project, JST37	Scanning gate microscopy of electron transport in the quantum
Hall effect breakdown regime
S. Taninaka1, K. Hashimoto1,2, S. Shirai1, T. Tomimatsu1,2, K. Sato1,K. Nagase1,and Y. Hirayama1, 2
1Tohoku University, 2ERATO Nuclear Spin Electronics Project, JST

39	Nuclear Spin Resonance Induced by AC Electric Field in theQuantum Hall Regime	S. Shirai1,2, T. Tomimatsu1,3, K. Hashimoto1,3, K. Sato1, K. Nagase1,3,and Y. Hirayama1,2,3,4	1Department of Physics, Tohoku University, 2Interdepartmental
Doctoral Degree Program for Multi-dimensional Materials Scienceleaders, Tohoku University, 3ERATO Nuclear Spin Electronics
Project, JST, 4WPI-AIMR, Tohoku University

41

Probing Fast Dynamics of Nuclear Polarization with RF Reflectometry
Takashi Nakajima1,2, Retsu Sugawara2, and Seigo Tarucha1,2
1	RIKEN Center for Emergent Matter Science, 2Department ofApplied Physics, University of Tokyo

43

P6P8P9P105

P11	Nanoscale Control of Nuclear Spins Mediated by Electrically
Driven Fractional-Quantum-Hall Domain Wall Motions	S. Miyamoto1,2, S. Watanabe2,3, T. Hatano1,2, M. H. Fauzi1,K. Nagase1,2, and Y. Hirayama1,2,4	1Department of Physics, Tohoku University, 2ERATO Nuclear
Spin Electronics Project, JST, 3Bio-AFM Frontier Research Center,
Institute of Science and Engineering, Kanazawa University, 4WPIAIMR, Tohoku University

45

P12 	Fundamental NMR Values of 69/71Ga and 75As in GaAs（I）	Kouhei Hayashi, Masahiro Sakai, Takanori Miura, KeisukeMatsumoto, Tatsuya Ohtaki and Susumu Sasaki
Niigata University

47

P13
Fundamental NMR Values of 69/71Ga and 75As in GaAs（II）	Masahiro Sakai, Takanori Miura, Keisuke Matsumoto, Tatsuya
Ohtaki and Susumu Sasaki
Niigata University

49	Impacts of Disorder and Gate Geometry on Quantum Point
Contact Transport	S. Maeda1, S. Miyamoto1,2, M. F. Sahdan1, M. H. Fauzi1,3, K. Nagase1,2,K. Sato1, and Y. Hirayama1,2,3,4	1Department of Physics, Graduate School of Science, Tohoku
University, 2ERATO Nuclear Spin Electronics Project, JST,
3
Interdepartmental Doctoral Degree Program for Multi-dimensional
Materials Science leaders, Tohoku University, 4WPI-AIMR, Tohoku
University51	Lateral Position’s Dependency on Sub-quantized Conductance inTriple Gate Quantum Point Contact
Muhammad F. Sahdan1, Shunta Maeda1, Mohammad H. Fauzi1,2,Satoru Miyamoto1,3, and Yoshiro Hirayama1,2,3,4	1Department of Physics, Tohoku University, 2Interdepartmental
Doctoral Degree Program for Multi-dimensional Materials Scienceleaders, Tohoku University, 3ERATO Nuclear Spin Electronics
Project, JST, 4WPI-AIMR, Tohoku University

53	Perpendicular magnetization structure in epitaxial Co/Ptfilms investigated by magnetic circular dichroism in thresholdphotoemission electron microscopy
M. Staab1,2, C. Schneider1, M. Kläui1,2, G. Schönhense1, and H. J. Elmers1	1Institut für Physik, Johannes Gutenberg-Universität, 2Graduate School
Materials Science in Mainz

55

P14P15

P16

Reception 19：00-20：30

6February 19（Thursday）
Session Ⅲ： Quantum dot and spin coherence Ⅰ
Ⅲ－ 1 9：00-9：30

Nuclear magnetism in semiconductor quantum dots（invited）
Alexander I. Tartakovskii
Department of Physics and Astronomy, University of Sheffield57

Ⅲ－ 2 9：30-9：45	Vanishing Influence from Nuclear Spins on Strongly Driven Single
Electron Spins in Quantum Dots	J. Yoneda1,2, T. Otsuka1,2, T. Nakajima1,2, T. Takakura1, T. Obata1,	M. Pioro-Ladrière3,4, H. Lu5, C. J. Palmstrøm5, A. C. Gossard5, and S.
Tarucha1,2	1Department of Applied Physics, University of Tokyo, 2RIKEN,
Center for Emergent Matter Science, 3Département de Physique,
Université de Sherbrooke, 4 CIFAR Program in Quantum
Information Science, 5Materials Department, University of California

59

Ⅲ－ 3 9：45-10：00	Increase by several orders of magnitude of the spin coherencetime in GaAs by fast measurements
M. R. Delbecq1, T. Nakajima1, T. Otsuka1, S. Amaha1, J. Yoneda1, A. Noiri2,A. Ludwig3, A. D. Wieck3 and S. Tarucha1,2	1Center for Emergent Matter Science, RIKEN, 2Department ofApplied Physics, University of Tokyo, 3Lehrstuhl für Angewandte
Festkörperphysik, Ruhr-Universität Bochum61

Ⅲ－ 4 10：00-10：15 Nuclear-Spin Observation of 1/f 2 Spectra of Decoherence Noise	Keisuke Matsumoto1, Susumu Sasaki1, Tatsuro Yuge2 and Yoshiro
Hirayama3,4	1Niigata University, 2Osaka University, 3Tohoku University,
4Nuclear Spin Electronics Project63

Coffee BreakSession Ⅳ：Nanoprobe
Ⅳ－ 1 10：45-11：15	Tailoring Ground States and Dynamics of Bottom-Up Engineered
Arrays of Atomic Spins on Surfaces
Jens Wiebe
Department of Physics, Hamburg University65

Ⅳ－ 2 11：15-11：45	Real-space observation of nuclear spin polarization in a quantum
Hall system	K. Hashimoto1,2, S. Shirai1,3, T. Tomimatsu1,2, S. Taninaka1,K. Nagase1,2, K. Sato1, and Y. Hirayama1,2,4	1Tohoku University, 2ERATO Nuclear Spin Electronics Project,
3Interdepartmental Doctoral Degree Program for Multi-dimensional
Materials Science Leaders, Tohoku University, 4WPI-AIMR,Tohoku University677

Ad Hoc（poster, discussions and others）
Session Ⅴ Two and one dimensional system Ⅰ
Ⅴ－ 1 17：30-18：00	NMR Probing of Wigner Solids in High Magnetic Fields（invited）	Trevor David Rhone1,2, Lars Tiemann1,2, Naokazu Shibata3, andKoji Muraki1,2	1NTT Basic Research Laboratories, NTT Corporation, 2ERATO
Nuclear Spin Electronics Project, JST, 3Department of Physics,Tohoku University69

Ⅴ－ 2 18：00-18：15	Measurement of anisotropic nuclear spin diffusion in double
quantum wells
Tsuyoshi Hatano1,2, Keiichirou Akiba1,2, Shinji Watanabe2,Katsumi Nagase1,2, Yoshiro Hirayama1,2,31
Department of Physics, Tohoku University, 2ERATO Nuclear Spin
Electronics Project, JST, 3WPI-AIMR, Tohoku University71

Ⅴ－ 3 18：15-18：30	Edge Magnetoplasmon and Its Decay in Graphene Investigated byFrequency and Time Domain Measurements
N. Kumada1,2, B. Roche2, M. Hashisaka3, H. Hibino1, I. Petkovic2,P. Roulleau2, and D. C. Glattli2	1NTT Basic Research Laboratories, 2CEA Saclay, 3Tokyo Instituteof Technology

73

Ⅴ－ 4 18：30-18：45

Charge and Magnetotransport Properties of Carbon Allotropes
Nils Richter1, Markus Rein1, Khaled Parvez2, Xinliang Feng3,Hermann Sachdev2, Mathias Kläui1, Klaus Müllen2	1Institute of Physics, Johannes Gutenberg-University Mainz,
2Max Planck Institute for Polymer Research Mainz, 3MolecularFunctional Materials, Dresden University of Technology,

75

Ⅴ－ 5 18：45-19：15	Electron spin magnetization of a quantum point contact studied
by means of nuclear magnetic resonance（invited）
Minoru Kawamura
RIKEN Center for Emergent Matter ScienceM. Kawamura（invited）

77

19：20-21：20 Banquet

8February 20（Friday）
Session Ⅵ： Quantum dot and spin coherence Ⅱ
Ⅵ－ 1 9：00-9：30	Nuclear Overhauser effect on exchange-induced spin blockade in atwo-electron double quantum dot（invited）	D. Imanaka1, S. Sharmin1, M. Hashisaka1, K. Muraki2, andT. Fujisawa1	1Department of Physics, Tokyo Institute of Technology, 2NTT
Basic Research Laboratories, NTT Corporation79

Ⅵ－ 2 9：30-9：45	Towards coherent transfer of quantum states from single photons
to single spins in double quantum dots
Marcus Larsson1, Takafumi Fujita1, Kazuyuki Kuroyama1,	Sadashige Matsuo 1, Arne Ludwig 2, Andreas D. Wieck 2, Akira
Oiwa1,3, and Seigo Tarucha1,4	1 Department of Applied Physics, The University of Tokyo,
2
Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität
Bochum, 3Institute of Scientific and Industrial Research, Osaka
University, 4Center for Emergent Matter Science （CEMS）,RIKEN

81

Ⅵ－ 3 9：45-10：00	Spin state transitions and interlayer charge transfer in a triplelayered quantum Hall system	Shinichi Amaha 1, Kimitoshi Kono 1, Takashi Nakajima 1, Seigo
Tarucha1,2 and Tsuyoshi Hatano3	1Center for Emergent Matter Science, RIKEN, 2Department ofApplied Physics, University of Tokyo, 3Department of Physics,
School of Science, Tohoku University

83

Coffee break
Session Ⅶ： Molecular spintronics
Ⅶ－ 1 10：30-11：00	Frontier of Quantum Molecular Spintronics Based on SingleMolecule Magnets（invited）
Masahiro Yamashita
Department of Chemistry, Faculty of Science, Tohoku University85

Ⅶ－ 2 11：00-11：30	Tutorial on Molecular and carbon-based quantum spintronics
using nuclear Spins（invited）
Mathias Kläui1,21Institut für Physik, Johannes Gutenberg-Universität Mainz, 2Graduate
School of Excellence Materials Science in Mainz（MAINZ）, Johannes
Gutenberg-Universität Mainz

87Lunch9

Session Ⅷ：Metal spintronics
Ⅷ－ 1 13：00-13：30	Spin interactions at the interfaces in metallic multilayers studiedby polarized neutron reflectivity（PNR）（invited）
1
2
L.T. Baczewski , K. Mergia , A. Pietruczik1, A.Wawro1, F. Ott3
1	Institute of Physics, Polish Academy of Sciences, 2Instituteof Nuclear Technology, NCSR Demokritos, 3Laboratoire Leon
Brillouin, CEA

89

Session Ⅸ：Narrow gap and topological insulator
Elemental Sb as a Topological Insulator（invited）
Michael Santos, Shayne Cairns, Kaushini Wickramasinghe,
Jeremy Massengale, Chomani Gaspe, Zhong-He Liu, Joel Keay,
Tetsuya Mishima, and Sheena Murphy
Homer L. Dodge Department of Physics and Astronomy, University ofOklahoma91

Ⅸ－ 2 14：00-14：15	Optimization of spin- and angle-resolved photoemission spectroscopyusing parallel spin detection
Erik Schaefer1,2, Martin Krämer1, Dmytro Kutnyakhov1,
Katerina Medjanik1, Gerd Schönhense1,2, and Hans-Joachim Elmers1,2
1
Institut für Physik, Johannes Gutenberg-Universität, 2Graduate School
Materials Science in Mainz

93

Ⅸ－ 3 14：15-14：45 RDNMR Studies of an InSb Two-Dimensional Electron Gas（invited）	H.W. Liu1,2,3, K.F. Yang1,3, K. Nagase1,3, T.D. Mishima4,M.B. Santos4, and Y. Hirayama1,31	ERATO Nuclear Spin Electronics Project, JST, 2Jilin University,
3Tohoku University, 4University of Oklahoma

95

Ⅸ－ 1 13：30-14：00

Closing10