15

HiSORACTIVITY REPORT2015

Hiroshima Synchrotron Radiation Center, HiSOR
Hiroshima University

Edited by H. Sato
The annual report is available from
Hiroshima Synchrotron Radiation Center, Hiroshima University
Kagamiyama 2-313, Higashi-Hiroshima 739-0046, JAPAN
Phone: +81-82-424-6293
Fax: +81-82-424-6294
e-mail: hisor@hiroshima-u.ac.jp
URL: http://www.hsrc.hiroshima-u.ac.jp/

－i－Table of Contents
Preface
Current Status of HiSOR
Status of the HiSOR storage ring ······································································································ 1
Beamlines ··································································································································· 6

Reseach Activities– Accelerator Studies –Magnetic design of Knot-APPLE undulator and its performance ························································· 9
N. Kawata, S. Sasaki

Sound of quasi-periodic undulator ····························································································· 11
Y. Ichioka, S. Sasaki

Design for new type quasi periodic undulator ················································································ 13
H. Mima, A. Miyamoto, S. Sasaki– Instrumental Developments –Present status of VUV-laser based spin-ARPES system ···································································· 15
K. Sumida, K. Miyamoto, E. Annese, K. Taguchi, T. Yoshikawa, Y. Okuda, A. Kimura, M. Taniguchi, H. Namatame,
T. Okuda– Synchrotron Radiation Experiments –Angle-resolved photoemission study of hybridization effect in YbInCu4 ··············································· 17
S. Ishihara, K. Ichiki, K. Abe, T. Matsumoto, K. Mimura, H. Sato, M. Arita, E. F. Schwier, H. Iwasawa, K. Shimada,H. Namatame, M. Taniguchi, T. Zhuang, K. Hiraoka, H. Anzai

Multi-band electronic structure of Eu3F4Bi2S4 ··············································································· 19
T. Mizokawa, T. Sugimoto, E. Paris, N. L. Saini, T. Asano, H. Endo, M. Mita, R. Higashinaka, T. Matsuda, Y. Aoki,
E. F. Schwier, M. Zheng, K. Kojima, H. Iwasawa, K. Shimada, H. Namatame, M. Taniguchi

Spiral structure in the intensity distribution of the photoelectron emission from the Dirac cone of graphene ·· 21
S. Tanaka

Symmetry resolved surface-derived electronic structure of WSe2 ·································································· 23
I. Tanabe, T. Komesu, E. F. Schwier, Y. Kojima, M. Zheng, H. Iwasawa, K. Shimada, D. Le, T. Rahman, P. A. Dowben－ iii －

Large area, nearly free-standing monolayer graphene on Pt ······························································ 25
W. Yao, E. Wang, A. V. Fedorov, E. F. Schwier, H. Iwasawa, K. Shimada, S. Zhou

Spin- and angle-resolved photoemission study of oxygen adsorbed Fe/MgO(100) ···································· 27
M. Zheng, E. F. Schwier, K. Miyamoto, T. Okuda, K. Shimada, H. Iwasawa, T. Horike, Y. Nagata, Y. Kojima,
H. Namatame, M. Taniguchi

ARPES studies on the electronic structure of a new diluted ferromagnetic semiconductor with Curie temperature
up to 230K ··························································································································· 29
Y. Hu, Y. Xu, S. He, M. Zheng, E. F. Schwier, H. Iwasawa, K. Shimada, H. Namatame, X. Zhou

Electron doping to rutile TiO2 surface by Na deposition ··································································· 31
R.-Y. Liu, K. Ozawa, E. F. Schwier, M. Zheng, H. Iwasawa, K. Shimada, H. Namatame, M. Taniguchi, I. Matsuda,
Y. Aiura

Dirac-cone surface state influenced by vicinal surface of W(110) ························································ 33
K. Miyamoto, C. Lamgenkämper, E. F. Schwiwer, H. Sato, H. Iwasawa, K. Shimada, M. Donath

A systematic study on the interlayer electronic structure and electron-phonon coupling in the novel graphite
intercalation superconductors ··································································································· 35
C. Wang, Y. Zhang, G. Liu, M. Zheng, M. Nakatake, K. Shimada, W. Zhao, H. Namatame, M. Taniguchi, X. Zhou

Fermi surface of heavy-fermion compound EuNi2P2 revealed by angle-resolved photoemission spectroscopy · 38
H. Anzai, K. Ichiki, E. F. Schwier, H. Iwasawa, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, A. Mitsuda,
H. Wada, K. Mimura

Angle-resolved photoelectron spectroscopy study of Ce(Ru1-xRhx)2Al10 ················································· 40
H. Yamaoka, E. F. Schwier, Y. Yamamoto, F. Tajima, T. Nishioka, H. Iwasawa, K. Shimada, J. Mizuki

ARPES research of a possible weyl semimetal material ···································································· 42
J. Huang, A. Liang, Q. Gao, S. He, M. Zheng, E. F. Schwier, H. Iwasawa, H. Sato, K. Shimada, H. Namatame,
X. Zhou

A study on thermal reaction with sulfenamide as vulcanization accelerator by means of S K-edge NEXAFS ·· 44
S. Tanaka, C. Tsukada, S. Ogawa, G. Kutluk, T. Murai, S. Yagi

Adsorption behavior between L-cysteine and Au nanoparticles precovered with different order of PC layer ·· 46
C. Tsukada, K. Matsuo, T. Murai, T. Nomoto, G. Kutluk, H. Namatame, M. Taniguchi, T. Yaji, T. Ohta, H. Nameki,
S. Ogawa, S. Yagi

Current activities of research and education on BL-5 ······································································ 48
T. Yokoya, T. Wakita, Y. Muraoka

X-ray photoelectron spectroscopy study of YbCu1-xGax (x = 0.5, 1.0, 1.2, 1.5) ········································· 49
H. Yamaoka, H. Sato, A. Rousuli, N. Tsujii, K. Shimada, Y. Yamamoto, J. Mizuki

Angle-resolved photoemission spectroscopy in topological crystalline insulator PbxSn1-xTe thin films ··········· 51
R. Akiyama, T. Yamaguchi, D. Fan, Y. Otaki, H. Sato, A. Kimura, S. Hasegawa, S. Kuroda

Photoemission study on electronic structure of Yb2Pt6X15 (X=Al, Ga) ·················································· 53
S. Nakamura, A. Rousuli, T. Nagasaki, H. Sato, T. Ueda, Y. Matsumoto, S. Ohara, K. Mimura, H. Anzai, K. Ichiki,
S. Ueda, K. Shimada, H. Namatame, M. Taniguchi－ iv －

Valence band structures of the layered oxychalcogenides ·································································· 55
K. Takase, K. Kanno, S. Ishiwata, K. Kawamoto, A. Rousuli, T. Nagasaki, S. Nakamura, H. Sato, A. Higashiya

Metal-semiconductor transition of mineral tetrahedrite Cu12Sb4S13 investigated by photoemission and soft x-ray
absorption spectroscopies ········································································································· 57
T. Nagasaki, A. Rousuli, S. Nakamura, H. Sato, H. I. Tanaka, K. Suekuni, M. Nakatake, G. Kutluk, M. Sawada,
K. Mimura, H. Anzai, K. Ichiki, S. Ueda, K. Shimada, T. Takabatake, H. Namatame, M. Taniguchi

Electronic states and glass-forming ability of Zr-Cu-Ag bulk metallic glasses ········································· 59
S. Hosokawa, H. Kato, M. Nakatake, H. Sato

Angle-resolved photoemission study of BaFe2S3 : possibility of excitonic instability ································· 61
T. Mizokawa, S. Iwasaki, K. Yamamoto, N. L. Saini, T. Aoyama, K. Hashizume, K. Ohgushi, M. Arita, H. Namatame,
M. Taniguchi

Electronic structure of K-doped iron-selenide superconductor studied by polarization-dependent angle-resolved
photoemission spectroscopy ······································································································ 63
M. Sunagawa, K. Terashima, T. Hamada, H. Fujiwara, M. Tanaka, H. Takeya, Y. Takano, M. Arita, K. Shimada,H. Namatame, M. Taniguchi, K. Suzuki, H. Usui, K. Kuroki, T. Wakita, Y. Muraoka, T. Yokoya

Replica of the Dirac cone in the epitaxial graphene due to the periodic potential of the SiC substrate ··········· 65
S. Tanaka

Resonance photoelectron spectroscopy of strongly spin-orbit coupled surface states ································ 67
H. Bentmann, H. Maaß, C. Seibel, F. Reinert

Superconducting gap and low-energy kink structure in the high-Tc cuprates La2-xSrxCuO4 ······················· 69
D. Shimonaka, D. Ootsuki, D. Shibata, A. Fujimori, M. Arita, H. Namatame, M. Taniguchi, S. Komiya, Y. Ando, T. Yoshida

Extremely correlated Hund metal emerging on the topmost layer of Sr2RuO4 ········································ 71
T. Kondo, M. Ochi, M. Nakayama, S. Akebi, K. Kuroda, H. Taniguchi, M. Arita, S. Sakai, H. Namatame,
M. Taniguchi, Y. Maeno, R. Arita, S. Shin

Angle resolved photoemission study of Yb1-xTmxB6 ········································································· 73
M. Arita, H. Sato, K. Shimada, H. Namatame, M. Taniguchi, H. Tanida, Y. Osanai, K. Hayashi, F. Iga

Synchrotron-radiation photoemission spectroscopy of layer-structured superconductor ZrP2-xSex ··············· 74
T. Kubo, H. Takita, W. Mansuer, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, S. Ueda, H. Kito, S. Ishida,
K. Oka, Y. Gotoh, H. Fujihisa, Y. Yoshida, A. Iyo, H. Eisaki, K. Kawashima, Y. Yanagi, A. Ino

Electronic structure studies of oxygen-concentration-controlled n-type HTSC, (Pr,La)1.85Ce0.15CuO4-δ ·········· 76
D. Song, S. Park, S. Cho, H. Eisaki, C. Kim

Protected spin polarized topological surface state on PbBi4Te4S3 ························································ 78
K. Sumida, T. Natsumeda, K. Shirai, K. Kuroda, S. Zhu, K. Miyamoto, T. Okuda, M. Arita, H. Namatame,
M. Taniguchi, J. Fujii, E. V. Chulkov, K. A. Kokh, O. E. Tereshchenko, A. Kimura

Study of spin-polarized states in the 2D electron system at the AlO×(2Å)/SrTiO 3 interface ························ 80
T. C. Rödel, F. Fortuna, J. Scarpaci, P. Le Fèvre, Y. Ishida, K. Kuroda, K. Minamoto, K. Taguchi, T. Okuda,
A. F. Santander-Syro－v－

Spin and electronic structure of a magnetic/topological insulator ultrathin film heterostructure ················· 82
Y. Okuyama, K. Sumida, K. Miyamoto, T. Okuda, T. Hirahara

Exchange coupling and spin structure in cobalt-on-chromia thin films ················································· 84
T. Komesu, K. Taguchi, T. Okuda, K. Miyamoto, R. Choudhary, P. Sahota, P. Manchanda, R. Skomski, A. Kashyap,
P. A. Dowben

Spin-polarization in the electronic structure of strongly correlated surface alloys ··································· 86
H. Bentmann, H. Maaß, C. Seibel, F. Reinert

Spin-split surface bands of Si(111)5×2-Au ····················································································· 88
K. Taguchi, K. Sumida, K. Miyamoto, H. Namatame, M. Taniguchi, A. Kimura, T. Okuda

Change of electronic structure of Ir(111) by Pb adsorption ································································ 90
Y. Okuda, K. Miyamoto, K. Sumida, K. Taguchi, T. Yoshikawa, N. Takagi, R. Arafune, T. Okuda

Identifying sulfur species in marine sediments collected from Osaka Bay using XAFS ······························ 92
S. Asaoka, H. Okamura, Y. Ushihara, T. Endo, A. Tamura, S. Hayakawa

XAS study of hydrogenation properties of Pd-TM alloys ·································································· 94
K. Fujii, N. Ishimatsu, S. Hayakawa, T. Shishidou, H. Maruyama

An XAFS study on the local structural changes around titanium in the lithium secondary battery during thecharge and discharge processes ································································································· 96
T. Mori, S. Mineoi, H. Sumida, Y. Yamada, A. Munoz-Noval, A. Tamura, H. Namatame, S. Hayakawa

Electrochemical formation of copper sulfide thin films and their characterizations ································· 97
M. Yanase, Y. Hayasaka, A. Munoz Noval, A. Tamura, H. Namatame, S. Hayakawa

Qualitative and quantitative x-ray fluorescence analysis of light elements and trace fluorine using soft x-ray · 99
M. Kondo, A. Tamura, A. Munoz-Noval, H. Namatame, S. Hayakawa

Vacuum-ultraviolet circular-dichroism spectra of polysaccharides and cyclic oligosaccharides ·················· 101
K. Matsuo, H. Namatame, M. Taniguchi

Effects of liposome surface charges on membrane-induced conformations of α1-acid glycoprotein characterizedby vacuum-ultraviolet circular-dichroism spectroscopy ··································································· 103
K. Matsuo, H. Namatame, M. Taniguchi

Synergistic gelation of xanthan and locust bean gum studied by vacuum-ultraviolet circular dichroism ······· 104
Y. Maki, K. Toriba, K. Ishizaka, K. Matsuo

VUV-CD measurements of proteins relating to DNA repair ······························································ 106
Y. Izumi, K. Fujii, S. Yamamoto, K. Matsuo, A. Yokoya

Contributions of aromatic side chains to the vacuum-ultraviolet circular dichroism spectra of escherichia coli
dihydrofolate reductase ·········································································································· 107
S. Tanaka, E. Ohmae, Y. Miyashita, K. Matsuo, K. Katayanagi

Characterization of green fluorescent protein monolayers utilizing controllable self-assembled monolayers ·· 109
S. Wada, J. Kajikawa, H. Hayashita, R. Koga, A. Hiraya－ vi －

Non-contact evaluation of molecular conductivity of organic molecules utilizing core-excitation dynamics
measurements ······················································································································ 111
S. Wada, M. Ogawa, S. Hosoda, R. Koga, A. Hiraya

Magnetic properties of Fe ultrathin films in h-BN/Fe/Ni(111) and Fe/h-BN/Ni(111) ································· 113
W. Tadano, M. Sawada, H. Namatame, M. Taniguchi

XMCD study of magnetic proximity effect in Co / Y3Fe5O12 Heterostructures ······································· 115
V. V. Fedorov, A. M. Korovin, S. M. Suturin, M. Sawada, N. S.Sokolov

XAS and XMCD study of Pd(100) and Fe/Pd(100) ultrathin films ······················································ 117
S. Sakuragi, M. Sawada, S. Nakahara, T. Sato

Temperature evolution of the density of states near the Fermi level of Ce3Pd20Si6 and Ce3Pd20Ge6 ·············· 119
H. Yamaoka, E. F. Schwier, Y. Yamamoto, N. Tsujii, H. Kitazawa, H. Iwasawa, K. Shimada, J. Mizuki

Laser μ angle-resolved photoelectron spectroscopy on CeT2Al10 (T = Ru, Os) ········································ 121
K. Terashima, T. Nagayama, H. Iwasawa, E. F. Schwier, J. Kawabata, Y. Yamada, T. Takabatake, Y. Muraoka,
T. Yokoya

Appendices
Organization ···························································································································· 123
List of Publications ···················································································································· 128
List of Resarch Proposals ············································································································· 132
Symposium ······························································································································ 138
Plan of the Building ··············································································································· 139
Location ····························································································································· 140－ vii －

Current Status of HiSOR

Status of the HiSOR storage ring
1. Introduction
The HiSOR is a synchrotron radiation (SR) source of Hiroshima Synchrotron Radiation
Center, Hiroshima University, established in 1996. It is a compact racetrack-type storage ring
having 21.95 m circumference, and its natural emittance of 400 nmrad is rather large
compared with those of the other medium to large storage rings. The most outstanding
advantage of the facility lies in good combination with state-of-the-art beamlines (BL’s) for
high-resolution photoelectron spectroscopy in the photon energy ranges between VUV andsoft X-ray. The principal parameters of HiSOR are shown in Table 1.
Table 1: Main parameters of the HiSOR Storage ring.
Circumference

21.95 mType

Racetrack

Bending radius

0.87 mBeam energy at Injection

150 MeVat Storage

700 MeV

Magnetic field at Injection

0.6 T

at Storage

2.7 T

Injector

150 MeV Racetrack Microtron

Betatron tune (x, y)RF frequency(1.72, 1.84)
191.244 MHz

Harmonic number

14

RF voltage

200 kVStored current (nominal)

350 mA

Natural emittanceBeam life time400 nmrad~10 hours@200 mA

Critical wavelength

1.42 nmPhoton intensity (5 keV)

1.2×1011 /sec/mr2/0.1%b.w./300mA

The originally designed maximum stored current of HiSOR was 300 mA. However, after
the improvement of the control system and the RF system in 2003, HiSOR has been in
operation with 350 mA maximum stored current since. Fig. 1 shows an example of typical
one-day operation. Beam injection for HiSOR is executed twice a day, at around 9:00 and
14:30.

－1－

400

600
500
400

200

300
200

100

Beam life time [min]Ring current [mA]

300

100
0
09:00

0
12:00

15:00

18:00

Time

Fig. 1: Typical daily operation status.
HiSOR has two 180-deg. Normal-conducting bending magnets which generate a strong
magnetic field of 2.7 T. This storage ring is equipped with two insertion devices, a linear
undulator and a quasi-periodic APPLE-II undulator which replaced to the previous helicalundulator in summer 2012. Major parameters of these undulators are listed in Table 2. The
photon energy spectra of the SR from HiSOR are shown in Fig. 2.
Table 2: Main parameters of the undulators.
Linear undulator (BL-1)
Total length

2354.2 mm

Periodic length u
Periodic number

57 mm
41

Pole gap
Maximum magnetic field
Magnetic material

30-200 mm
0.41 T
Nd-Fe-B (NEOMAX-44H)

Quasi-Periodic APPLE-II
undulator (BL-9A,B)
Total length
1845 mm
78 mm
Periodic length u
Periodic number
23
Pole gap
23-200 mm
Maximum magnetic field
0.86 T (horizontal linear mode)

Magnetic material

0.59 T (vertical linear mode)
0.50 T (helical mode)
Nd-Fe-B (NEOMAX-46H)－2－

Wave length [nm]
100

10

1

16

10

BL-9 QP-APPLE2(helical mode)

1st

BL-1 Linear undulator
3rdRing current = 300 mA

5th
7th peak

15

10

2

2

Brilliance [Photons/sec/mrad /mm /0.1 % b.w.]

1000

BL-9 QP-APPLE2(linear mode)

14

10

Bending magnet

13

10

12

10

BL1
BL5

11

10

BL7

BL9A
BL12
1

BL3
BL6
BL11

BL15

BL14

10

100

BL13

1000

10000

Photon energy [eV]Fig. 2: Photon energy spectra of the SR from HiSOR.

2. Operation status in FY 2015
Fig. 3 shows monthly operation time of HiSOR storage ring in FY 2015. HiSOR has a longterm cease period to have routine inspections in summer every year. The total user time of
FY2015 achieved 1338 hours. Fig. 4 shows bar graph of total operation days in each fiscal
year. It shows that days for user operation in FY2015 was the highest for the last decade.
Operation times of the storage ring and the Microtron from FY 2006 to FY 2015 are shown in
Fig. 5.
To solve the problem of the water leakage from the absorber completely (see ‘HiSOR
Activity Report 2014’ in detail), a new absorber was constructed with an improved design. It
was installed during the regular maintenance period at the summer shutdown. Because ofrecovering the degree of vacuum, commissioning operation of the storage ring wasadditionally needed in October and the first week in November. As the result, the operation
time and user time was gradually recovered at the end of this fiscal year.

－3－

User Run (1338hr)
Machine Study (771hr)
Others (17hr)

Operation Time [hours]

250

200

150

100

50

0

04

05

06

07

08

09

10

11

12

01

02

03

2014

2015

Month in FY2015

Fig. 3: Monthly operation time in FY 2015.
250

Operation Days [days]

200

User Run
Machine Study
Others

150

100

50

0

2006

2007

2008

2009

2010

2011

2012

2013

Fiscal Year

Fig. 4: Operation days of HiSOR storage ring.

－4－Operation Time [hours]

HiSOR Storage Ring
User Run
2000
Machine Study, Others
150 MeV Microtron
Injection to HiSOR
Injection to REFER (Shutdown in 2010)
1500

1000

500

0

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

Fiscal Year

Fig. 5: Annual operation time of Storage ring and Microtron.

－5－

Beamlines
A total of 13 beamlines has been constructed so far; three normal-incidence
monochromators,

sevengrazing-incidence

monochromators,

twodoublecrystalmonochromators and apparatus for white beam irradiation (Fig. 1). Table 1 lists the beamlinesat present together with the main subject, energy range and monochromators.
Table 1: List of Beamlines
beamline source

monochromator

subject

energy range(eV)

status

BL-1

LU

GIM

Polarization dependent
high-resolution ARPES

22-300in use

BL-3

BM

DCM

Surface XAFS

1800-3200

in use

BL-4

BM

BL-5

BM

GIM

ARPES and PEEM

40-220in use

BL-6

BM

GIM

Gas-phase photochemistry200-1200in use

BL-7

BM

GIM

ARPES

20-380in use

BL-8

BM

BL-9A

HU/LU

NIM

BL-9B

HU/LU

BL-11

closedWhite beam irradiation

Beam diagnosis
5-35

in useGIM

UV-VUV high-resolution
ARPES
High-resolution
spin-resolved ARPES

16-300in use

BM

DCM

XAFS

2000-5000

in use

BL-12

BM

NIM

VUV-CD of biomaterials

2-10

in use

BL-13

BM

GIM

Surface photochemistry60-1200

in use

BL-14

BM

GIM

Soft-XMCD of nano-materials

400-1200in use

BL-15

BM

NIM

VUV-CD of biomaterials

4-40

closedBL-16

BMBeam profile monitor

At present, nine beamlines BL1, BL3, BL6, B7, BL9A, BL9B, BL11, BL12, BL13 andBL14 are opened for users. Furthermore, three off-line systems, spin- and angle-resolved
photoemission (SARPES) spectrometer, inverse-photoemission (IPES) spectrometer andlow-temperature scanning tunneling microscope (LT-STM) system have also opened for users(Fig. 2).
－6－

Fig. 1: Schematic view of the experimental hall.

－7－

Fig. 2： Experimental apparatus for Joint usage and Joint research. (a) BL-1, (b) BL-3, (c)BL-6, (d) BL-7, (e) BL-9A, (f) BL-9B, (g) BL-11, (h) BL-13, (i) BL-14, (j) BL-12, (k) Spin
resolved photoemission (offline), (l) Resonant inverse photoemission (offline), (m) LT-STM(offline).

－8－Research Activities– Accelerator Studies –－9－

－ 10 －

－ 11 －

－ 12 －

－ 13 －

－ 14 －

Research Activities– Instrumental Developments –－ 15 －－ 16 －