Magnetic anisotropy and spin-orbit-coupled phenomena at oxide interfaces using synchrotron radiation spectroscopy with multiple degrees of freedom

2018 Fiscal Year Annual Research Report

• Project/Area Number: 15H02109
• Research Institution: The University of Tokyo
• Principal Investigator: 藤森 淳 東京大学, 大学院理学系研究科(理学部), 教授 (10209108)
• Co-Investigator(Kenkyū-buntansha): 組頭 広志 東北大学, 多元物質科学研究所, 教授 (00345092) ; 雨宮 健太 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, 教授 (80313196)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Keywords: 遷移金属酸化物 / 界面 / 軟X線磁気円二色性 / 光電子分光 / 軟X線二色性

Outline of Annual Research Achievements

○スピンフィルターとして期待されているスピネル型CoFe2O4薄膜をAl2O3バッファ層を介してSi基板上に成長した試料についてXMCD測定を行った。CoFe2O4膜厚依存性やCoのNi置換効果から、Al2O3/CoFe2O4界面で磁気的デッドレイヤー形成され、その原因が四面体位置Feの欠陥であることを見出した。
○ファンデルワールス強磁性体Cr2Ge2Te6 のARPES 、第一原理計算、XMCDを行い、Cr 3d 電子間相互作用U がCr 原子間磁気結合を層内で強磁性的に、層間で強磁性と反強磁性の境界付近に位置させることがわかった。異方的な電子状態にも関わらず軌道磁気モーメントが小さいことが磁気異方性が弱い原因であることが示された。
○ SrTiO3基板上のLaMnO3薄膜の強磁性状態について、XMCDによる元素選択的磁化測定を行い、強磁性が保たれる臨界膜厚を決定した。強磁性転移の臨界膜厚は5-7 MLとこれまでの報告とほぼ同じ値が得られた一方で、磁化の大きさについては試料毎のばらつきが大きく、作製時の酸素過剰の影響が大きいことがわかった。
○ 酸化物ヘテロ界面LaMnO3/ LaNiO3の電荷移動によりホールドープされたLaMnO3側の電子状態について、Mn3d共鳴角度分解光電子分光を用いて界面2次元電子状態の特定を行った。
○蛍光X線収量深さ分解XAFS/XMCD法を用いて、GdOx/Co界面における電界印加の影響を観察し、GdOx側に負の電圧を印加した場合に界面のCoが酸化されること、電圧に関わらず界面のCoは磁化を持たないことを見出した。
○Pt/Co/Pt薄膜において、レーザー照射によって磁気異方性および結晶構造が変化する様子を位置分解EXAFSを用いて観察し、レーザースポットの周辺部における大きな構造歪みが面直磁化を誘起していることを明らかにした。

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Rutgers University/Seoul National University(韓国)
  • Country Name: KOREA (REP. OF KOREA)
  • Counterpart Institution: Rutgers University/Seoul National University
• [Int'l Joint Research] Universite de Paris Sud/SOLEIL放射光施設(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: Universite de Paris Sud/SOLEIL放射光施設
• [Journal Article] Coulomb-interaction effect on the two-dimensional electronic structure of the van der Waals ferromagnet Cr2Ge2Te6 (2019)
  • Author(s): Suzuki M.、Gao B.、Koshiishi K.、Nakata S.、Hagiwara K.、Lin C.、Wan Y. X.、Kumigashira H.、Ono K.、Kang Sungmo、Kang Seungjin、Yu J.、Kobayashi M.、Cheong S.-W.、Fujimori A.
  • Journal Title: Physical Review B Volume: 99 Pages: 161401-1~4
  • DOI: 10.1103/PhysRevB.99.161401
  • Peer Reviewed / Int'l Joint Research
• [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: 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: 10.1016/j.jpowsour.2019.01.067
  • 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: 125120-1~7
  • DOI: 10.1103/PhysRevB.99.125120
  • Peer Reviewed
• [Journal Article] Surface Electron?Ion Mixed Conduction of Ti0.99Sc0.01O2?δ Thin Film with Lattice Distortion and Oxygen Vacancies (2019)
  • Author(s): Kawamura Kinya、Sekine Masaki、Nishioka Daiki、Yukawa Ryu、Horiba Koji、Kumigashira Hiroshi、Higuchi Tohru
  • Journal Title: Journal of the Physical Society of Japan Volume: 88 Pages: 054711-1～5
  • DOI: 10.7566/JPSJ.88.054711
  • Peer Reviewed
• [Journal Article] Development of sub-nanometer resolution depth-resolved XAFS/XMCD in the soft x-ray region towards operando measurements (2019)
  • Author(s): Amemiya Kenta、Sakamaki Masako
  • Journal Title: AIP Conference Proceedings Volume: 2054 Pages: 040001-1~6
  • DOI: 10.1063/1.5084602
  • Peer Reviewed
• [Journal Article] Attempt to generate x-ray beam carrying orbital angular momentum in photon factory (2019)
  • Author(s): Nakao Hironori、Yamasaki Yuichi、Mizumaki Masaichiro、Tabata Chihiro、Sakamaki Masako、Amemiya Kenta
  • Journal Title: AIP Conference Proceedings Volume: 2054 Pages: 060035-1~6
  • DOI: 10.1063/1.5084666
  • Peer Reviewed
• [Journal Article] Experimental evidence of orbital ferrimagnetism in CoMnO3(0001) epitaxial thin film (2019)
  • Author(s): Koizumi Hiroki、Sharmin Sonia、Amemiya Kenta、Suzuki-Sakamaki Masako、Inoue Jun-ichiro、Yanagihara Hideto
  • Journal Title: Physical Review Materials Volume: 3 Pages: 024404-1~6.
  • DOI: 10.1103/PhysRevMaterials.3.024404
  • Peer Reviewed
• [Journal Article] Electronic states and possible origin of the orbital-glass state in a nearly metallic spinel cobalt vanadate: An x-ray magnetic circular dichroism study (2018)
  • Author(s): Nonaka Y.、Shibata G.、Koborinai R.、Ishigami K.、Sakamoto S.、Ikeda K.、Chi Z.、Koide T.、Tanaka A.、Katsufuji T.、Fujimori A.
  • Journal Title: Physical Review B Volume: 97 Pages: 205126-1~7
  • DOI: 10.1103/PhysRevB.97.205126
  • Peer Reviewed
• [Journal Article] Electronic Structure of Ce-Doped and -Undoped Nd2CuO4 Superconducting Thin Films Studied by Hard X-Ray Photoemission and Soft X-Ray Absorption Spectroscopy (2018)
  • Author(s): Horio M.、Krockenberger Y.、Yamamoto K.、Yokoyama Y.、Takubo K.、Hirata Y.、Sakamoto S.、Koshiishi K.、Yasui A.、Ikenaga E.、Shin S.、Yamamoto H.、Wadati H.、Fujimori A.
  • Journal Title: Physical Review Letters Volume: 120 Pages: 257001-1~6
  • DOI: 10.1103/PhysRevLett.120.257001
  • 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: 020505-1~5
  • DOI: 10.1103/PhysRevB.98.020505
  • Peer Reviewed
• [Journal Article] Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr2VFeAsO3?δ Studied by X-ray Magnetic Circular Dichroism (2018)
  • Author(s): Horio Masafumi、Takeda Yukiharu、Namiki Hiromasa、Katagiri Takao、Wakabayashi Yuki K.、Sakamoto Shoya、Nonaka Yosuke、Shibata Goro、Ikeda Keisuke、Saitoh Yuji、Yamagami Hiroshi、Sasagawa Takao、Fujimori Atsushi
  • Journal Title: Journal of the Physical Society of Japan Volume: 87 Pages: 105001-1～2
  • DOI: 10.7566/JPSJ.87.105001
  • Peer Reviewed
• [Journal Article] ARPES studies on new types of electron-doped cuprate superconductors (2018)
  • Author(s): Horio M、Fujimori A
  • Journal Title: Journal of Physics: Condensed Matter Volume: 30 Pages: 503001-1～11
  • DOI: 10.1088/1361-648X/aab824
  • Peer Reviewed
• [Journal Article] Cation distribution and magnetic properties in ultrathin (Ni1-xCox)Fe2O4(x=0-1) layers on Si(111) studied by soft x-ray magnetic circular dichroism (2018)
  • Author(s): Wakabayashi Yuki K.、Nonaka Yosuke、Takeda Yukiharu、Sakamoto Shoya、Ikeda Keisuke、Chi Zhendong、Shibata Goro、Tanaka Arata、Saitoh Yuji、Yamagami Hiroshi、Tanaka Masaaki、Fujimori Atsushi、Nakane Ryosho
  • Journal Title: Physical Review Materials Volume: 2 Pages: 104416-1~12
  • DOI: 10.1103/PhysRevMaterials.2.104416
  • Peer Reviewed
• [Journal Article] Anisotropic Charge Distribution Induced by Spin Polarization in La0.6Sr0.4MnO3 Thin Films Studied by X-ray Magnetic Linear Dichroism (2018)
  • Author(s): G. Shibata, K. Yoshimatsu, K. Ishigami, T. Harano, Y. Takahashi, S. Sakamoto, Y. Nonaka, T. Kadono, M. Furuse, S. Fuchino, M. Okano, J. Fujihira, A. Uchida, K. Watanabe, H. Fujihira, S. Fujihira, A. Tanaka, H. Kumigashira, T. Koide, and A. Fujimori
  • Journal Title: Journal of the Physical Society of Japan Volume: 87 Pages: 114713-1～5
  • DOI: 10.7566/JPSJ.87.114713
  • 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: 165428-1~8
  • DOI: 10.1103/PhysRevB.97.165428
  • Peer Reviewed
• [Journal Article] High-density two-dimensional electron system induced by oxygen vacancies in ZnO (2018)
  • Author(s): Roedel T. C.、Dai J.、Fortuna F.、Frantzeskakis E.、Le Fevre 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)-1~7
  • DOI: 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: 223902-1~5
  • DOI: 10.1103/PhysRevLett.120.223902
  • Peer Reviewed
• [Journal Article] Spectroscopic and theoretical investigation of the electronic states of layered perovskite oxyfluoride Sr2RuO3F2 thin films (2018)
  • Author(s): Chikamatsu Akira、Kurauchi Yuji、Kawahara Keisuke、Onozuka Tomoya、Minohara Makoto、Kumigashira Hiroshi、Ikenaga Eiji、Hasegawa Tetsuya
  • Journal Title: Physical Review B Volume: 97 Pages: 235101-1~7
  • DOI: 10.1103/PhysRevB.97.235101
  • 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: 232103～232103
  • DOI: 10.1063/1.5027005
  • Peer Reviewed
• [Journal Article] Spatial coherence of the insulating phase in quasi-two-dimensional LaNiO3 films (2018)
  • Author(s): Anada Masato、Kowa Kazuhiro、Maeda Hiroki、Sakai Enju、Kitamura Miho、Kumigashira Hiroshi、Sakata Osami、Nakanishi-Ohno Yoshinori、Okada Masato、Kimura Tsuyoshi、Wakabayashi Yusuke
  • Journal Title: Physical Review B Volume: 98 Pages: 014105-1~8
  • DOI: 10.1103/PhysRevB.98.014105
  • Peer Reviewed
• [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: 101101-1～801
  • DOI: 10.1063/1.5050823
  • Peer Reviewed
• [Journal Article] Growth of antiperovskite oxide Ca3SnO films by pulsed laser deposition (2018)
  • Author(s): Minohara Makoto、Yukawa Ryu、Kitamura Miho、Kumai Reiji、Murakami Youichi、Kumigashira Hiroshi
  • Journal Title: Journal of Crystal Growth Volume: 500 Pages: 33～37
  • DOI: 10.1016/j.jcrysgro.2018.08.014
  • 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: 115003-1~8
  • DOI: 10.1103/PhysRevMaterials.2.115003
  • Peer Reviewed
• [Journal Article] Fermi surface topology in a metallic phase of VO2 thin films grown on TiO2(001) substrates (2018)
  • Author(s): Muraoka Yuji、Nagao Hiroki、Yao Yuichiro、Wakita Takanori、Terashima Kensei、Yokoya Takayoshi、Kumigashira Hiroshi、Oshima Masaharu
  • Journal Title: Scientific Reports Volume: 8 Pages: 17906-1~10
  • DOI: 10.1038/s41598-018-36281-8
  • 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: 257201-1~6
  • DOI: 10.1103/PhysRevLett.121.257201
  • Peer Reviewed
• [Journal Article] Irradiation effect on magnetic properties of FeRh thin films with energetic C60 cluster ion beam (2018)
  • Author(s): Soma Ryunosuke、Saitoh Yuichi、Sakamaki Masako、Amemiya Kenta、Iwase Akihiro、Matsui Toshiyuki
  • Journal Title: AIP Advances Volume: 8 Pages: 056433-1～433
  • DOI: 10.1063/1.5007704
  • Peer Reviewed
• [Journal Article] Effect of Electric Field on Magnetism of Ni Thin Films via Antiferromagnetic NiO (2018)
  • Author(s): Amemiya Kenta、Sakamaki Masako
  • Journal Title: e-Journal of Surface Science and Nanotechnology Volume: 16 Pages: 186～189
  • DOI: 10.1380/ejssnt.2018.186
  • Peer Reviewed / Open Access
• [Journal Article] Manipulation of magnetic properties of ferromagnetic Ni thin films grown on Cu(001) by antiferromagnetic NiO and effects of voltage application (2018)
  • Author(s): Amemiya Kenta、Sakamaki Masako
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Pages: 0902B3-1～4
  • DOI: 10.7567/JJAP.57.0902B3
  • Peer Reviewed / Open Access
• [Journal Article] Effect of interface NiO layer on magnetism in Fe/BaTiO3 thin film (2018)
  • Author(s): Sakamaki Masako、Amemiya Kenta
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Pages: 0902B9-1～4
  • DOI: 10.7567/JJAP.57.0902B9
  • Peer Reviewed / Open Access
• [Journal Article] Observation of an electric field-induced interface redox reaction and magnetic modification in GdOx/Co thin film by means of depth-resolved X-ray absorption spectroscopy (2018)
  • Author(s): Sakamaki Masako、Amemiya Kenta
  • Journal Title: Physical Chemistry Chemical Physics Volume: 20 Pages: 20004～20009
  • DOI: 10.1039/C8CP02972E
  • Peer Reviewed
• [Journal Article] Origin of focused laser irradiation-induced enhancement of perpendicular magnetic anisotropy in Pt/Co/Pt thin films investigated by spatially resolved x-ray absorption spectroscopy (2018)
  • Author(s): Amemiya K.、Sakamaki M.、Kisielewski J.、Kurant Z.、Sveklo I.、Tekielak M.、Wawro A.、Maziewski A.
  • Journal Title: Journal of Applied Physics Volume: 124 Pages: 123903-1～6
  • DOI: 10.1063/1.5049182
  • Peer Reviewed
• [Journal Article] Development of high signal-to-background ratio depth-resolved soft X-ray absorption spectroscopy by fluorescence energy selection (2018)
  • Author(s): Suzuki-Sakamaki Masako、Amemiya Kenta
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Pages: 120308-1～4
  • DOI: 10.7567/JJAP.57.120308
  • Peer Reviewed
• [Presentation] Electronic structure of 2D ferromagnets (2019)
  • Author(s): A. Fujimori
  • Organizer: 19-th Japan-Korea-Taiwan Symposium on Strongly Correlated Electron Systems (JKT19)
  • Int'l Joint Research / Invited
• [Presentation] Electronic structure of 2D ferromagnets (2019)
  • Author(s): A. Fujimori
  • Organizer: 8-th Indo-Japan Seminar “Designing Emergent Materials”
  • Int'l Joint Research / Invited
• [Presentation] 放射光分光による酸化物表面・界面計測と新機能探索 (2019)
  • Author(s): 組頭 広志
  • Organizer: 第8回強的秩序とその操作に関わる研究グループ研究会
  • Invited
• [Presentation] X-ray magnetic circular dichroism study of Fe-intercalated transition-metal dichalcogenide FexTiS2 with perpendicular magnetic anisotropy (2019)
  • Author(s): G. Shibata, Y. Nonaka, K. Ikeda, Y.-X. Wan, M. Suzuki, J.-W. Kim, S-W. Cheong, and A. Fujimori
  • Organizer: 19-th Japan-Taiwan-Korea Workshop on Strongly Correlated Electron Systems (JTK-19)
  • Int'l Joint Research
• [Presentation] Photoemission and x-ray magnetic circular dichroism studies of the van der Waals ferromagnet Cr2Ge2Te6 (2019)
  • Author(s): M. Suzuki, B. Gao, G. Shibata, S. Sakamoto, K. Koshiishi, Y. Nonaka, K. Ikeda, Z. Chi, S. Nakata, K. Hagiwara, C. Lin, Y. X. Wan, H. Kumigashira, K. Ono, Y. Takeda, Sungmo Kang, Seungjin Kang, J. Yu, M. Kobayashi, and A. Fujimori
  • Organizer: 19-th Japan-Taiwan-Korea Workshop on Strongly Correlated Electron Systems (JTK-19)
  • Int'l Joint Research
• [Presentation] X-ray magnetic circular dichroism study of the 122-type diluted ferromagnetic semiconductor (Ba,K)(Zn,Mn)2As2 (2019)
  • Author(s): Y.X. Wan, G. Q. Zhao, K. Ikeda, M. Suzuki, M. Kobayashi, S. Sakamoto, Z. Deng, K. Zhao, B. J. Chen, Y. Takada, T. Okane, Y. Saitoh, H. Yamagami, Y. J. Uemura, C. Q. Jin, A. Fujimori
  • Organizer: 19-th Japan-Taiwan-Korea Workshop on Strongly Correlated Electron Systems (JTK-19)
  • Int'l Joint Research
• [Presentation] Inter-valence charge transfer in Ru-doped cobalt ferrite CoFe2O4 (2019)
  • Author(s): M. Kobayashi, M. Seki, M. Suzuki, M. Kitamura, A. Fujimori, K. Horiba, H. Kumigashira, M. Tanaka, and H. Tabata
  • Organizer: Indo-Japan Seminar ''Designing Emergent Materials''
  • Int'l Joint Research
• [Presentation] X-ray magnetic circular dichroism study of Fe-intercalated ntercalated titanium disulfdisulfide FexTiS2 with perpendicular magnetic anisotropy (2019)
  • Author(s): G. Shibata, J.-W. Kim, Y. Nonaka. K. Ikeda, Y.-X. Wan, M. Suzuki, A. Tanaka, S.-W. Cheong, and A. Fujimori
  • Organizer: Indo-Japan Seminar ''Designing Emergent Materials''
  • Int'l Joint Research
• [Presentation] Origin of the magnetically dead layer in spinel ferrites MFe2O4 (M = Co, Ni) thin films and its restoration by post-deposition annealing (2019)
  • Author(s): Y. Nonaka, Y. K. Wakabayashi, G. Shibata, K. Ikeda, Z. Chi, Y.-X. Wan, M. Suzuki, T. Takeda, A. Tanaka, Y. Saitoh, H. Yamagami, Y. Takeda, M. Suzuki-Sakamaki, K. Amemiya, M. Kobayashi, M. Tanaka, R. Nakane, A. Fujimori
  • Organizer: Indo-Japan Seminar ''Designing Emergent Materials''
  • Int'l Joint Research
• [Presentation] Photoemission and x-ray magnetic circular dichroism studies of a van der Waals ferromagnet Cr2Ge2Te6 (2019)
  • Author(s): M. Suzuki, B. Gao, G. Shibata, S. Sakamoto, K. Koshiishi, Y. Nonaka, K. Ikeda, Z. Chi, S. Nakata, K. Hagiwara, C. Lin, Y.-X. Wan, H. Kumigashira, K. Ono, Y. Takeda, A. Tanaka, Sungmo Kang, Seungjin Kang, J. Yu, M. Kobayashi, S-W. Cheong, and A. Fujimori
  • Organizer: Indo-Japan Seminar ''Designing Emergent Materials''
  • Int'l Joint Research
• [Presentation] X-ray magnetic circular dichroism study of the 122-type diluted ferromagnetic semiconductor (Ba,K)(Zn,Mn)2As2 (2019)
  • Author(s): Y. X. Wan, G. Q. Zhao, K. Ikeda, M. Suzuki, M. Kobayashi, S. Sakamoto, Z. Deng, K. Zhao, B. J. Chen, Y. Takada, T. Okane, Y. Saitoh, H. Yamagami, Y. J. Uemura, C. Q. Jin, and A. Fujimori
  • Organizer: Indo-Japan Seminar ''Designing Emergent Materials''
  • Int'l Joint Research
• [Presentation] Large perpendicular magnetic anisotropy and anisotropic electronic structure of the new ferromagnetic semiconductor (Ba,K)(Zn,Mn)2As2 single crystal studied by angle-dependent x-ray magnetic circular dichroism (2019)
  • Author(s): S. Sakamoto, G. Zhao, G. Shibata, Z. Deng, K. Zhao, B. Chen, Y. Nonaka, K. Ikeda, Z. Chi, Y. Wan, M. Suzuki, T. Koide, S. Maekawa, Y. J. Uemura, C. Q. Jin, and A. Fujimori
  • Organizer: APS March Meeting
  • Int'l Joint Research
• [Presentation] ペロブスカイト型繊維金属酸化物ヘテロ界面における電荷移動の発現機構 (2019)
  • Author(s): 北村未歩、小林正起、簔原誠人、坂井延寿、湯川龍、藤岡洋、堀場弘司、組頭広志
  • Organizer: 第32回日本放射光学会年会・放射光科学合同シンポジウム
• [Presentation] ペロブスカイト型繊維金属酸化物ヘテロ界面における電荷移動の発現機構 (2019)
  • Author(s): 湯川龍、簔原誠人、志賀大亮、北村未歩、小林正起、堀場弘司、組頭広志
  • Organizer: 第32回日本放射光学会年会・放射光科学合同シンポジウム
• [Presentation] K蒸着したVO2薄膜における単斜晶系金属相の出現 (2019)
  • Author(s): 志賀大亮，簔原誠人，北村未歩，湯川龍，堀場弘司，組頭広志
  • Organizer: 第66回応用物理学会春季学術講演会
• [Presentation] 深さ分解軟X線吸収分光法の最近の進展 ～ナノ界面のオペランド観察へ向けて～ (2019)
  • Author(s): 雨宮健太，酒巻真粧子
  • Organizer: 第32回日本放射光学会年会・放射光科学合同シンポジウム
• [Presentation] Magnetic anisotropy of ferromagnetic oxide thin films studied by angle-dependent XMCD (2018)
  • Author(s): A. Fujimori
  • Organizer: 5th International Workshop on Complex Oxides
  • Int'l Joint Research / Invited
• [Presentation] X-ray dichroism studies of magnetic anisotropies in thin films (2018)
  • Author(s): A. Fujimori
  • Organizer: 9th Vacuum and Surface Science Conference of Asia and Australia (VASSCAA-9)
  • Int'l Joint Research / Invited
• [Presentation] Soft x-ray dichroism studies of magnetic anisotropies in correlated transition-metal oxides (2018)
  • Author(s): A. Fujimori
  • Organizer: 14-th International Conference on Electronic Spectroscopy and Structure (ICESS-14)
  • Int'l Joint Research / Invited
• [Presentation] Impurity bands and inhomogeneous magnetism in diluted ferromagnetic semiconductors (2018)
  • Author(s): A. Fujimori
  • Organizer: Kavli ITS Workshop on Diluted Magnetic Semiconductors: Challenges and Opportunities
  • Int'l Joint Research / Invited
• [Presentation] Origin of interfacial ferromagnetism between perovskite transition-metal oxides LaNiO3 and LaMnO3 (2018)
  • Author(s): 北村未歩、堀場弘司、小林正起、坂井延寿、簔原誠人、湯川龍、志賀大亮、雨宮健太、長井拓郎、野中洋亮、芝田悟朗、藤森淳、藤岡洋、組頭広志
  • Organizer: 第42回日本磁気学会学術講演会
  • Invited
• [Presentation] Development of soft X-ray absorption spectroscopy at the Photon Factory for the operando observation of surface and interface (2018)
  • Author(s): K. Amemiya and M. Suzuki-Sakamaki
  • Organizer: SpectroNanoscopy 2018 Workshop
  • Int'l Joint Research / Invited
• [Presentation] X-ray magnetic circular dichroism of the diluted ferromagnetic semiconductor (Ba,K)(Zn,Mn)2As2 (2018)
  • Author(s): Y. X. Wan, G. Q. Zhao, K. Ikeda, M. Suzuki, M. Kobayashi, S. Sakamoto, Z. Deng, K. Zhao, B. J. Chen, Y. Takada, T. Okane, Y. Saitoh, H. Yamagami, Y. J. Uemura, C. Q. Jin, A. Fujimori
  • Organizer: 2018 Workshop of Max Planck-UBC-UTokyo Centre for Quantum Materials
  • Int'l Joint Research
• [Presentation] Anisotropic charge distribution induced by spin polarization in La0.6Sr0.4MnO3 thin films (2018)
  • Author(s): G. Shibata, K. Yoshimatsu, K. Ishigami, T. Harano, Y. Takahashi, S Sakamoto, Y. Nonaka, T. Kadono, M. Furuse, S. Fuchino, M. Okano, J.-i. Fujihira, A. Uchida, K. Watanabe, H. Fujihira, S. Fujihira, A. Tanaka, H. Kumigashira, T. Koide, and A. Fujimori
  • Organizer: 2018 Workshop of Max Planck-UBC-UTokyo Centre for Quantum Materials
  • Int'l Joint Research
• [Presentation] In-situ Angle-Resolved Photoemission Studies of the Quasi-Two-Dimensional Electron Liquid States Formed at Anatase TiO2 (001) Surface by K Adsorption (2018)
  • Author(s): R. Yukawa, M. Minohara, D. Shiga, M. Kitamura, T. Mitsuhashi, M. Kobayashi, K. Horiba, and H. Kumigashira
  • Organizer: 14th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-14)
  • Int'l Joint Research
• [Presentation] Origin of interfacial ferromagnetism between perovskite oxides LaNiO3 and LaMnO3 (2018)
  • Author(s): M. Kitamura, K. Horiba, M. Kobayashi, E. Sakai, M. Minohara, R. Yukawa, D. Shiga, K. Amemiya, Y. Nonaka, G. Shibata, A. Fujimori, H. Fujioka, and H. Kumigashira
  • Organizer: 14th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-14)
  • Int'l Joint Research
• [Presentation] Control of the Metal-Insulator Transition in VO2 Thin Films by K Deposition (2018)
  • Author(s): D. Shiga, M. Minohara, M. Kitamura, R. Yukawa, K. Horiba, and H. Kumigashira
  • Organizer: 14th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-14)
  • Int'l Joint Research
• [Presentation] Wide-energy-range synchrotron beamline for spectroscopic analysis of surface andinterface, 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
• [Presentation] Development of Sub-nanometer Resolution Depth-Resolved XAFS/XMCD in the Soft X-ray Region towards Operando Measurements (2018)
  • Author(s): K. Amemiya and M. Sakamaki
  • Organizer: The 13th International Conference on Synchrotron Radiation Instrumentation
  • Int'l Joint Research
• [Presentation] Laser irradiation-induced changes in chemical state and structure of Pt/Co/Pt thin film observed by photoemission electron microscope (2018)
  • Author(s): K. Amemiya, M. Sakamaki, J. Kisielewski, Z. Kurant, I. Sveklo, M. Tekielak, A. Wawro, and A. Maziewski
  • Organizer: 17th International Conference on X-ray Absorption Fine Structure
  • Int'l Joint Research
• [Presentation] Direct observation of electric-field effect on interface magnetic state of GdOx/Co thin films by fluorescence-yield depth-resolved soft x-ray absorption spectroscopy (2018)
  • Author(s): M. Sakamaki and K. Amemiya
  • Organizer: 17th International Conference on X-ray Absorption Fine Structure
  • Int'l Joint Research
• [Presentation] 精密界面分析に向けた蛍光分光深さ分解XAFS法の開発 (2018)
  • Author(s): 酒巻真粧子，雨宮健太
  • Organizer: 第21回XAFS討論会
• [Book] 放射光利用の手引き (2019)
  • Author(s): 東北放射光施設推進会議推進室 編
  • Total Pages: 344
  • Publisher: アグネ技術センター
  • ISBN: 978-4-901496-95-7
• [Book] X線光電子分光法 (2018)
  • Author(s): 高桑 雄二 編
  • Total Pages: 368
  • Publisher: 講談社サイエンティフィク
  • ISBN: 978-4-06-514047-5
• [Remarks] 藤森研究室
  • URL: http://wyvern.phys.s.u-tokyo.ac.jp/
• [Remarks] 組頭研究室（東北大）
  • URL: http://www2.tagen.tohoku.ac.jp/lab/kumigashira/html/index.html
• [Remarks] 組頭研究室（KEK）
  • URL: http://oxides.kek.jp/member.html