Transmission soft x-ray absorption spectroscopy by x-ray excited optical luminescence

2018 Fiscal Year Annual Research Report

• Project/Area Number: 16K05033
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: 堀場 弘司 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (10415292)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: X線吸収分光 / 放射光

Outline of Annual Research Achievements

前年度までに可視光の検出するための光学系・検出器系の開発、転換可視蛍光検出のためのシステム構築、そのシステムを用いた可視蛍光基板の特性評価等を行い、転換可視蛍光収量を用いた新しい透過軟Ｘ線吸収分光が目的通りに可能であることが実証できたので、昨年度は実試料の測定を開始した。特にLiイオン電池正極材料の薄膜試料などを、共同研究者からの提供を受けて測定を実施した。目的通りに、薄膜内部からの電子状態の情報が得られていることが確認でき、また同時に表面敏感な試料電流法による測定を行って比較することで、試料の内部と表面における電子状態の違いを明らかにすることができ、電池動作に関与するような興味深い知見が得られた。LiNi0.8Co0.2O2というLiイオン電池正極薄膜における実験結果がJournal of Power Sourcesに掲載された。

Research Products

• [Int'l Joint Research] CSNSM, Univ. Paris-Sud, CNRS/IN2P3/Synchrotron SOLEIL(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: CSNSM, Univ. Paris-Sud, CNRS/IN2P3/Synchrotron SOLEIL
• [Int'l Joint Research] Florida State University(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Florida State University
• [Int'l Joint Research] University of Luxembourg(ルクセンブルク)
  • Country Name: LUXEMBOURG
  • Counterpart Institution: University of Luxembourg
• [Journal Article] Growth and physical properties of Ce(O,F)Sb(S,Se)2 single crystals with site-selected chalcogen atoms (2019)
  • Author(s): Nagao Masanori、Tanaka Masashi、Miura Akira、Kitamura Miho、Horiba Koji、Watauchi Satoshi、Takano Yoshihiko、Kumigashira Hiroshi、Tanaka Isao
  • Journal Title: Solid State Communications Volume: 289 Pages: 38～42
  • DOI: doi: 10.1016/j.ssc.2018.12.004
  • Peer Reviewed
• [Journal Article] Bottom-current-collector-free thin-film batteries using LiNi0.8Co0.2O2 epitaxial thin films (2019)
  • Author(s): Nishio Kazunori、Horiba Koji、Nakamura Naoto、Kitamura Miho、Kumigashira Hiroshi、Shimizu Ryota、Hitosugi Taro
  • Journal Title: Journal of Power Sources Volume: 416 Pages: 56～61
  • DOI: doi: 10.1016/j.jpowsour.2019.01.067
  • Peer Reviewed
• [Journal Article] Observation of Chiral Fermions with a Large Topological Charge and Associated Fermi-Arc Surface States in CoSi (2019)
  • Author(s): Takane Daichi、Wang Zhiwei、Souma Seigo、Nakayama Kosuke、Nakamura Takechika、Oinuma Hikaru、Nakata Yuki、Iwasawa Hideaki、Cacho Cephise、Kim Timur、Horiba Koji、Kumigashira Hiroshi、Takahashi Takashi、Ando Yoichi、Sato Takafumi
  • Journal Title: Physical Review Letters Volume: 122 Pages: 076402
  • DOI: doi: 10.1103/PhysRevLett.122.076402
  • Peer Reviewed
• [Journal Article] Emergence of metallic monoclinic states of VO2 films induced by K deposition (2019)
  • Author(s): Shiga D.、Minohara M.、Kitamura M.、Yukawa R.、Horiba K.、Kumigashira H.
  • Journal Title: Physical Review B Volume: 99 Pages: 125120
  • DOI: doi: 10.1103/PhysRevB.99.125120
  • Peer Reviewed
• [Journal Article] Control of two-dimensional electronic states at anatase TiO2(001) surface by K adsorption (2018)
  • Author(s): Yukawa R.、Minohara M.、Shiga D.、Kitamura M.、Mitsuhashi T.、Kobayashi M.、Horiba K.、Kumigashira H.
  • Journal Title: Physical Review B Volume: 97 Pages: 165428
  • DOI: doi.org/10.1103/PhysRevB.97.165428
  • Peer Reviewed
• [Journal Article] Surface electronic structure of SmB6(111) (2018)
  • Author(s): Ohtsubo Yoshiyuki、Hagiwara Kenta、Wang Chengwei、Yukawa Ryu、Horiba Koji、Kumigashira Hiroshi、Hirano Wataru、Iga Fumitoshi、Kimura Shin-ichi
  • Journal Title: Physica B: Condensed Matter Volume: 536 Pages: 75～77
  • DOI: doi.org/10.1016/j.physb.2017.09.033
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Converting topological insulators into topological metals within the tetradymite family (2018)
  • Author(s): Chen K.-W.、Aryal N.、Dai J.、Graf D.、Zhang S.、Das S.、Le F?vre P.、Bertran F.、Yukawa R.、Horiba K.、Kumigashira H.、Frantzeskakis E.、Fortuna F.、Balicas L.、Santander-Syro A. F.、Manousakis E.、Baumbach R. E.
  • Journal Title: Physical Review B Volume: 97 Pages: 165112
  • DOI: doi: 10.1103/PhysRevB.97.165112
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High-density two-dimensional electron system induced by oxygen vacancies in ZnO (2018)
  • Author(s): Rodel T. C.、Dai J.、Fortuna F.、Frantzeskakis E.、Le F?vre P.、Bertran F.、Kobayashi M.、Yukawa R.、Mitsuhashi T.、Kitamura M.、Horiba K.、Kumigashira H.、Santander-Syro A. F.
  • Journal Title: Physical Review Materials Volume: 2 Pages: 051601(R)
  • DOI: doi.org/10.1103/PhysRevMaterials.2.051601
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Element Selectivity in Second-Harmonic Generation of GaFeO3 by a Soft-X-Ray Free-Electron Laser (2018)
  • Author(s): Yamamoto Sh.、Omi T.、Akai H.、Kubota Y.、Takahashi Y.、Suzuki Y.、Hirata Y.、Yamamoto K.、Yukawa R.、Horiba K.、Yumoto H.、Koyama T.、Ohashi H.、Owada S.、Tono K.、Yabashi M.、Shigemasa E.、Yamamoto S.、Kotsugi M.、Wadati H.、Kumigashira H.、Arima T.、Shin S.、Matsuda I.
  • Journal Title: Physical Review Letters Volume: 120 Pages: 223902
  • DOI: doi: 10.1103/PhysRevLett.120.223902
  • Peer Reviewed
• [Journal Article] Band alignment at β-(AlxGa1?x)2O3/β-Ga2O3 (100) interface fabricated by pulsed-laser deposition (2018)
  • Author(s): Wakabayashi Ryo、Hattori Mai、Yoshimatsu Kohei、Horiba Koji、Kumigashira Hiroshi、Ohtomo Akira
  • Journal Title: Applied Physics Letters Volume: 112 Pages: 232103
  • DOI: doi: 10.1063/1.5027005
  • Peer Reviewed
• [Journal Article] Angle-resolved photoemission spectroscopy of the low-energy electronic structure of superconducting Pr2CuO4 driven by oxygen nonstoichiometry (2018)
  • Author(s): Horio M.、Krockenberger Y.、Koshiishi K.、Nakata S.、Hagiwara K.、Kobayashi M.、Horiba K.、Kumigashira H.、Irie H.、Yamamoto H.、Fujimori A.
  • Journal Title: Physical Review B Volume: 98 Pages: 020505(R)
  • DOI: doi: 10.1103/PhysRevB.98.020505
  • Peer Reviewed
• [Journal Article] Observation of a Dirac nodal line in AlB2 (2018)
  • Author(s): Takane Daichi、Souma Seigo、Nakayama Kosuke、Nakamura Takechika、Oinuma Hikaru、Hori Kentaro、Horiba Kouji、Kumigashira Hiroshi、Kimura Noriaki、Takahashi Takashi、Sato Takafumi
  • Journal Title: Physical Review B Volume: 98 Pages: 041105(R)
  • DOI: doi: 10.1103/PhysRevB.98.041105
  • Peer Reviewed
• [Journal Article] Giant Rashba splitting of quasi-one-dimensional surface states on Bi/InAs(110)-(2×1) (2018)
  • Author(s): Nakamura Takuto、Ohtsubo Yoshiyuki、Yamashita Yuki、Ideta Shin-ichiro、Tanaka Kiyohisa、Yaji Koichiro、Harasawa Ayumi、Shin Shik、Komori Fumio、Yukawa Ryu、Horiba Koji、Kumigashira Hiroshi、Kimura Shin-ichi
  • Journal Title: Physical Review B Volume: 98 Pages: 075431
  • DOI: doi: 10.1103/PhysRevB.98.075431
  • Peer Reviewed
• [Journal Article] Operation Mechanism of GaN-based Transistors Elucidated by Element-Specific X-ray Nanospectroscopy (2018)
  • Author(s): Omika Keiichi、Tateno Yasunori、Kouchi Tsuyoshi、Komatani Tsutomu、Yaegassi Seiji、Yui Keiichi、Nakata Ken、Nagamura Naoka、Kotsugi Masato、Horiba Koji、Oshima Masaharu、Suemitsu Maki、Fukidome Hirokazu
  • Journal Title: Scientific Reports Volume: 8 Pages: 13268
  • DOI: doi:10.1038/s41598-018-31485-4
  • Peer Reviewed / Open Access
• [Journal Article] Large anisotropy in conductivity of Ti2O3 films (2018)
  • Author(s): Yoshimatsu K.、Kurokawa H.、Horiba K.、Kumigashira H.、Ohtomo A.
  • Journal Title: APL Materials Volume: 6 Pages: 101101
  • DOI: doi: 10.1063/1.5050823
  • Peer Reviewed
• [Journal Article] Electronic properties across metal-insulator transition in β-pyrochlore-type CsW2O6 epitaxial films (2018)
  • Author(s): Soma Takuto、Yoshimatsu Kohei、Horiba Koji、Kumigashira Hiroshi、Ohtomo Akira
  • Journal Title: Physical Review Materials Volume: 2 Pages: 115003
  • DOI: doi: 10.1103/PhysRevMaterials.2.115003
  • Peer Reviewed
• [Journal Article] Origins of Thermal Spin Depolarization in Half-Metallic Ferromagnet CrO2 (2018)
  • Author(s): Fujiwara Hirokazu、Terashima Kensei、Sunagawa Masanori、Yano Yuko、Nagayama Takanobu、Fukura Tetsushi、Yoshii Fumiya、Matsuura Yuka、Ogata Makoto、Wakita Takanori、Yaji Koichiro、Harasawa Ayumi、Kuroda Kenta、Shin Shik、Horiba Koji、Kumigashira Hiroshi、Muraoka Yuji、Yokoya Takayoshi
  • Journal Title: Physical Review Letters Volume: 121 Pages: 257201
  • DOI: doi: 10.1103/PhysRevLett.121.257201
  • Peer Reviewed
• [Presentation] Synchrotron-based ARPES study at VUV-SX combination beamline KEK-PF BL-2 MUSASHI (2019)
  • Author(s): K. Horiba
  • Organizer: The first international workshop on Momentum Microscopy & Spectroscopy for Materials Science
  • Int'l Joint Research / Invited
• [Presentation] Wide-energy-range synchrotron beamline for spectroscopic analysis of surface and interface, BL-2 MUSASHI (2018)
  • Author(s): K. Horiba, M. Kitamura, M. Minohara, R. Yukawa, D. Shiga, A. Toyoshima, H. Tanaka, Y. Nagatani, T. Kosuge, K. Amemiya, and H. Kumigashira
  • Organizer: 14th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-14)
  • Int'l Joint Research
• [Book] Compendium of Surface and Interface Analysis (2018)
  • Author(s): The Surface Science Society of Japan
  • Total Pages: 853
  • Publisher: Springer
  • ISBN: 9811061554
• [Book] X線光電子分光法 (2018)
  • Author(s): 高桑 雄二
  • Total Pages: 368
  • Publisher: 講談社サイエンティフィク
  • ISBN: 4065140475