Spin-polarized electronic states of one-dimensional metallic bands studied by time- and spin-resolved photoelectron spectroscopy

• Project/Area Number: 15K17675
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: The University of Tokyo
• Principal Investigator: Yaji Koichiro 東京大学, 物性研究所, 助教 (50447447)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 表面金属電子 / スピン軌道相互作用 / スピン分解光電子分光 / 時間分解光電子分光 / 表面電子物性 / 光電子分光 / 電子スピン物性 / 固体表面

Outline of Final Research Achievements

The electronic band structures of one-dimensional atomic chains grown on semiconductor substrates were investigated by time-, spin- and angle-resolved photoelectron spectroscopy (ARPES). In the studies of platinum- and gold-induced atomic nanowires formed on germanium (001) substrates, we have experimentally determined the electronic band structures and their Fermi surfaces. In the study of bismuth (111) surface, the spin-orbital entanglement of a surface state was observed by orbital-selective spin-resolved ARPES using a polarization-variable vacuum ultraviolet laser. In addition, a general description of the spin-orbital entanglement of the spin-polarized surface state was revealed. From the time-resolved ARPES using a pump-and-probe method, the large pump-and-probe response of the Bi(111) surface states was found and the decay process of the electrons excited into the conduction bands was clarified.

Research Products

• [Journal Article] Surface electronic states of Au-induced nanowires on Ge(001) (2018)
  • Author(s): Yaji Koichiro、Yukawa Ryu、Kim Sunghun、Ohtsubo Yoshiyuki、Le Fevre Patrick、Bertran Francois、Taleb-Ibrahimi Amina、Matsuda Iwao、Nakatsuji Kan、Shin Shik、Komori Fumio
  • Journal Title: Journal of Physics: Condensed Matter Volume: 30 Issue: 7 Pages: 075001-075001
  • DOI: 10.1088/1361-648x/aaa526
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] レーザ光で電子のスピン方向を自在に制御 (2018)
  • Author(s): 矢治光一郎，黒田健太，小森文夫，辛埴
  • Journal Title: レーザ加工学会 Volume: 25 Pages: 39-42
  • NAID: 130007999641
  • Peer Reviewed
• [Journal Article] Modulation of Electron?Phonon Coupling in One-Dimensionally Nanorippled Graphene on a Macrofacet of 6H-SiC (2017)
  • Author(s): Ienaga Koichiro、Iimori Takushi、Yaji Koichiro、Miyamachi Toshio、Nakashima Shuhei、Takahashi Yukio、Fukuma Kohei、Hayashi Shingo、Kajiwara Takashi、Visikovskiy Anton、Mase Kazuhiko、Nakatsuji Kan、Tanaka Satoru、Komori Fumio
  • Journal Title: Nano Letters Volume: 17 Issue: 6 Pages: 3527-3532
  • DOI: 10.1021/acs.nanolett.7b00606
  • Peer Reviewed
• [Journal Article] 固体表面電子におけるスピン軌道エンタングルメントと光スピン制御 (2017)
  • Author(s): 矢治光一郎，黒田健太，小森文夫，辛埴
  • Journal Title: 固体物理 Volume: 52 Pages: 559-571
  • NAID: 40021363681
  • Peer Reviewed
• [Journal Article] Direct mapping of spin and orbital entangled wave functions under interband spin-orbit coupling of giant Rashba spin-split surface states (2017)
  • Author(s): Ryo Noguchi, Kenta Kuroda, K. Yaji, K. Kobayashi, M. Sakano, A. Harasawa, Takeshi Kondo, F. Komori, S. Shin
  • Journal Title: Physical Review B Volume: 95 Issue: 4 Pages: 1-5
  • DOI: 10.1103/physrevb.95.041111
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Topologically Entangled Rashba-Split Shockley States on the Surface of Grey Arsenic (2017)
  • Author(s): P. Zhang,* J.-Z. Ma,* Y. Ishida,* L.-X. Zhao,* Q.-N. Xu, B.-Q. Lv, K. Yaji, G.-F. Chen, H.-M. Weng, X. Dai, Z. Fang, X.-Q. Chen, L. Fu, T. Qian, H. Ding, S. Shin
  • Journal Title: Physical Review Letters Volume: 118 Issue: 4 Pages: 046802-046802
  • DOI: 10.1103/physrevlett.118.046802
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Spin-dependent quantum interference in photoemission process from spin-orbit coupled states (2017)
  • Author(s): Koichiro Yaji, Kenta Kuroda, Sogen Toyohisa, Ayumi Harasawa, Yukiaki Ishida, Shuntaro Watanabe, Chuangtian Chen, Katsuyoshi Kobayashi, Fumio Komori and Shik Shin
  • Journal Title: Nat. Commun. Volume: 8 Issue: 1 Pages: 14588-14588
  • DOI: 10.1038/ncomms14588
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Observation of spin-polarized bands and domain-dependent Fermi arcs in polar Weyl semimetal MoTe2 (2017)
  • Author(s): M. Sakano,M. S. Bahramy, H. Tsuji, Araya, K. Ikeura, H. Sakai, S. Ishiwata, K. Yaji, K. Kuroda, A. Harasawa, S. Shin, and K. Ishizaka
  • Journal Title: Phys. Rev. B Volume: 95 Issue: 12
  • DOI: 10.1103/physrevb.95.121101
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] High-resolution three-dimensional spin-and angle-resolved photoelectron spectrometer using vacuum ultraviolet laser light (2016)
  • Author(s): K. Yaji, A. Harasawa, K. Kuroda, S. Toyohisa, M. Nakayama, Y. Ishida, A. Fukushima, S. Watanabe, C.Chen, F.Komori, S.Shin
  • Journal Title: Review of Scientific Instruments Volume: 87 Issue: 5
  • DOI: 10.1063/1.4948738
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] One-dimensional metallic surface states of Pt-induced atomic nanowires on Ge(0 0 1) (2016)
  • Author(s): K.Yaji, S.Kim, I.Mochizuki, Y.Takeichi, Y.Ohtsubo, P.L.Fegrave;vre, F.Bertran, A.T.Ibrahimi, S.Shin, F.Komori
  • Journal Title: Journal of Physics: Condensed Matter Volume: 28 Issue: 28 Pages: 284001-284001
  • DOI: 10.1088/0953-8984/28/28/284001
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Nonvortical Rashba spin structure on a surface with C1h symmetry (2016)
  • Author(s): E. Annese, T. Kuzumaki, B. Mueller, Y. Yamamoto, H. Nakano, H. Kato, A. Araki, M. Ohtaka, T. Aoki, H. Ishikawa, T. Hayashida, J. R. Osiecki, K. Miyamoto, Y. Takeichi, A. Harasawa, K. Yaji, T. Shirasawa, K.-i. Nittoh, W. I. Yang, K. Miki, T. Oda, H. W. Yeom, and K. Sakamoto
  • Journal Title: Phys. Rev. Lett. Volume: 117 Issue: 1 Pages: 016803-016803
  • DOI: 10.1103/physrevlett.117.016803
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Coherent control over three-dimensional spin polarization for the spin-orbit coupled surface state of Bi2Se3 (2016)
  • Author(s): K. Kuroda, K. Yaji, M. Nakayama, A. Harasawa, Y. Ishida, S. Watanabe, C.-T. Chen, T. Kondo, F. Komori, S. Shin
  • Journal Title: Physical Review B Volume: 94 Issue: 16 Pages: 165162-165162
  • DOI: 10.1103/physrevb.94.165162
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Spin texture in type-II Weyl semimetal WTe2 (2016)
  • Author(s): Baojie Feng, Yang-Hao Chan, Ya Feng, Ro-Ya Liu, Mei-Yin Chou, Kenta Kuroda, Koichiro Yaji, Ayumi Harasawa, Paolo Moras, Alexei Barinov, Walid Malaeb, C´edric Bareille, Takeshi Kondo, Shik Shin, Fumio Komori, Tai-Chang Chiang, Youguo Shi, and Iwao Matsuda
  • Journal Title: Phys. Rev. B Volume: 94 Issue: 19
  • DOI: 10.1103/physrevb.94.195134
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] High repetition pump-and-probe photoemission spectroscopy based on a compact fiber laser system (2016)
  • Author(s): Y. Ishida, T. Otsu, A. Ozawa, K. Yaji, S. Tani, S. Shin, Y. Kobayashi
  • Journal Title: Review of Scientific Instrumnets Volume: 87 Issue: 12 Pages: 123902-123902
  • DOI: 10.1063/1.4969053
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Spin Polarization and Texture of the Fermi Arcs in the Weyl Fermion Semimetal TaAs (2016)
  • Author(s): S.-Y. Xu, I. Belopolski, D. S. Sanchez, M. Neupane, G. Chang, K. Yaji, Z. Yuan, C. Zhang, K. Kuroda, G. Bian, C. Guo, Hong Lu, T.-R. Chang, N. Alidoust, H. Zheng, C.-C. Lee, S.-M. Huang, C.-H. Hsu, H.-T. Jeng, A. Bansil, T. Neupert, F. Komori, T. Kondo, S. Shin, H. Lin, S. Jia, and M. Z. Hasan
  • Journal Title: Physical Review Letters Volume: 116 Issue: 9 Pages: 1-7
  • DOI: 10.1103/physrevlett.116.096801
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] レーザー光励起スピン・角度分解光電子分光装置の開発 (2016)
  • Author(s): 矢治光一郎
  • Journal Title: 表面科学 Volume: 37 Pages: 19-24
  • NAID: 130005121616
  • Peer Reviewed
• [Journal Article] Significantly enhanced giant Rashba splitting in a thin film of binary alloy (2015)
  • Author(s): W.-C. Chen, T.-R. Chang, S.-T. Tai, S. Yamamoto, J.-M. Kuo, C.-M. Cheng, K.-D. Tsuei, K. Yaji, H. Lin, H.-T. Jeng, C.-Y. Mou, I. Matsuda, S.-J. Tang
  • Journal Title: New Journal of Physics Volume: 17 Issue: 8 Pages: 083015-083015
  • DOI: 10.1088/1367-2630/17/8/083015
  • Peer Reviewed / Int'l Joint Research
• [Presentation] グラフェン/SiC界面におけるSn単原子層のスピン分解光電子分光 (2018)
  • Author(s): 矢治光一郎
  • Organizer: 日本物理学会 第73回年次大会
• [Presentation] Laser-SARPESによる新たなスピン物性研究 (2018)
  • Author(s): 矢治光一郎
  • Organizer: SPRUC顕微ナノ・表面放射光・SPM合同シンポジウム
  • Invited
• [Presentation] レーザースピン分解光電子分光によるPb/Ge(111)のスピン偏極表面電子状態と光電子スピンの研究 (2017)
  • Author(s): 矢治光一郎
  • Organizer: 日本物理学会 第72回年次大会
  • Place of Presentation: 大阪大学豊中キャンパス（大阪府大阪市）
  • Year and Date: 2017-03-17
• [Presentation] レーザースピン分解光電子分光によるスピン偏極表面電子状態の研究 (2017)
  • Author(s): 矢治光一郎
  • Organizer: 物性研究所短期研究会
• [Presentation] Spin polarization of spin-orbit coupled states studied by laser-SARPES (2017)
  • Author(s): Koichiro Yaji
  • Organizer: 16th International Conference on the Formation of Semiconductor Interfaces
  • Int'l Joint Research / Invited
• [Presentation] レーザースピン分解光電子分光で解明するスピン偏極表面電子状態 (2017)
  • Author(s): 矢治光一郎
  • Organizer: 2017年真空・表面科学合同講演会：第37回表面科学学術講演会・第58回真空に関する連合講演会
  • Invited
• [Presentation] Development of high-resolution three-dimensional spin- and angle-resolved photoelectron spectroscopy apparatus using vacuum ultraviolet laser (2017)
  • Author(s): Koichiro Yaji
  • Organizer: 33rd European conference on surface science
  • Int'l Joint Research
• [Presentation] 貴金属(111)表面電子状態のスピン軌道エンタングルメントとlaser-SARPES (2017)
  • Author(s): 矢治光一郎
  • Organizer: 日本物理学会 2017年秋季大会
• [Presentation] Laser-SARPESで解明するスピン軌道エンタングルメントと光スピン制御 (2017)
  • Author(s): 矢治光一郎
  • Organizer: PF研究会
• [Presentation] レーザースピン分解光電子分光を用いた新たなスピン物性研究 (2017)
  • Author(s): 矢治光一郎
  • Organizer: 第4回JASRI ワークショップ「軟X 線光電子分光における角度分解測定の現状とスピン分解測定への展開」
  • Place of Presentation: スプリング８（兵庫県佐用町）
• [Presentation] レーザースピン分解光電子分光で解明するスピン軌道分裂表面電子状態からの光電子スピン (2016)
  • Author(s): 矢治光一郎
  • Organizer: 第36回表面科学学術講演会
  • Place of Presentation: 名古屋国際会議場（愛知県名古屋市）
  • Year and Date: 2016-11-29
• [Presentation] 偏光可変レーザースピン分解光電子分光で解明する光電子スピン偏極度と波動関数の位相 (2016)
  • Author(s): 矢治光一郎
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 金沢大学（石川県金沢市）
  • Year and Date: 2016-09-13
• [Presentation] Development of high‐resolution three‐dimensional spin‐ and angleresolved photoelectron spectroscopy apparatus using vacuum ultraviolet laser (2016)
  • Author(s): Koichiro Yaji
  • Organizer: 39th International Conference on Vacuum Ultraviolet and X-ray Physics
  • Place of Presentation: ETH Zulich (Zulich, Switzerland)
  • Year and Date: 2016-07-03
  • Int'l Joint Research
• [Presentation] 偏光可変レーザースピン分解光電子分光によるBi(111)表面電子状態の研究 (2016)
  • Author(s): 矢治光一郎
  • Organizer: 日本物理学会第７１回年次大会
  • Place of Presentation: 東北学院大学（宮城県仙台市）
  • Year and Date: 2016-03-19
• [Presentation] レーザースピン分解光電子分光を用いた新たなスピン物性研究 (2016)
  • Author(s): 矢治光一郎
  • Organizer: 光・量子融合連携研究開発プログラム 合同研究会
  • Place of Presentation: 高エネルギー加速器研究機構（茨城県つくば市）
• [Presentation] レーザー光励起による高効率・高分解能三次元スピン分解光電子分光装置の開発II (2015)
  • Author(s): 矢治光一郎
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 関西大学（大阪府吹田市）
  • Year and Date: 2015-09-16
• [Remarks] 電子のスピンを自在に操作 -先端レーザー技術が拓く光スピン制御-
  • URL: http://www.issp.u-tokyo.ac.jp/issp_wms/DATA/OPTION/release20170224.pdf