STM and SARPES study of the surface states on highly-correlated topological crystals

• Project/Area Number: 18H01146
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
• Research Institution: The University of Tokyo
• Principal Investigator: Komori Fumio 東京大学, 物性研究所, 教授 (60170388)
• Co-Investigator(Kenkyū-buntansha): 宮町 俊生 電気通信大学, 大学院情報理工学研究科, 助教 (10437361) ; 矢治 光一郎 国立研究開発法人物質・材料研究機構, 先端材料解析研究拠点, 主任研究員 (50447447)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000); Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2018: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
• Keywords: 表面状態 / トポロジカル近藤絶縁体 / スピン偏極 / ツイスト２層グラフェン / トポロジカル物質 / 強相関 / スピン偏極電子状態 / STM / SARPES / ツイストグラフェン / スピン偏極表面状態

Outline of Final Research Achievements

We developed a method for cleaning the surfaces of topological Kondo insulator candidates SmB6 and YbB12, and performed local structure-dependent tunnel spectroscopy and quasiparticle interference measurement. In SmB6, the interference pattern depending on the electron energy indicating the existence of the surface state was clarified, and in YbB12, the surface structure dependence of the local density of states was clarified. In addition, a Co single atom was deposited on the surface of SmB6, and a change in the electronic state of the surface was found.
We completed a spin angle-resolved photoelectron spectroscopy (SARPES) measuring device using an 11eV laser, and measured the spin polarization band structure of a topological insulator with a resolution of 20 meV. We also developed a time-resolved SARPES and investigated the lifetime of its surface electronic state with a time resolution less than 2 psec.

Academic Significance and Societal Importance of the Research Achievements

量子力学の確立ともに強磁性の理解が大きく進みその社会実装も進んできた。さらに、最近は、電子のもつ磁性であるスピンが偏極した電子状態の理解も進み、強磁性だけでない多様なスピン偏極電子状態の社会的利用が提案されている。しかしながら、新しい物質においては、その物性の学術的理解はまだ不十分であり、確たる証拠基づいていない議論もある。本研究では、原子レベルで評価された良質表面試料作製法を開発し、スピン偏極電子状態に関する実験研究を行い、その定量的学術研究発展への道筋をつけたことに意義がある。今後の基礎研究の進展により学術的理解を深め、スピン偏極電子状態の社会応用への新しい発展が期待される。

Research Products

• [Int'l Joint Research] University of Wisconsin-Milwaukee(米国)
• [Int'l Joint Research] Sungkyunkwan University(韓国)
• [Int'l Joint Research] Synchrotron SOLEIL(フランス)
• [Int'l Joint Research] Paul Scherrer Institut/Ecole Polytechnique Federale de Lausanne(スイス)
• [Int'l Joint Research] University of West Bohemia/Masaryk University(チェコ)
• [Int'l Joint Research] Ludwig Maximillian University/Elektronenspeicherring BESSY II(ドイツ)
• [Int'l Joint Research]
• [Journal Article] Subatomic Distortion of Surface Monolayer Lattice Visualized by Moire Pattern (2021)
  • Author(s): T. Hattori, N. Kawamura, T. Iimori, T. Miyamachi, F. Komori
  • Journal Title: Nano Letters Volume: 6 Issue: 6 Pages: 2406-2406
  • DOI: 10.1021/acs.nanolett.0c04408
  • Peer Reviewed
• [Journal Article] Atomic-layer Rashba-type superconductor protected by dynamic spin-momentum locking (2021)
  • Author(s): Yoshizawa Shunsuke、Kobayashi Takahiro、Nakata Yoshitaka、Yaji Koichiro、Yokota Kenta、Komori Fumio、Shin Shik、Sakamoto Kazuyuki、Uchihashi Takashi
  • Journal Title: Nature Communications Volume: 12 Issue: 1 Pages: 1462-1462
  • DOI: 10.1038/s41467-021-21642-1
  • Peer Reviewed / Open Access
• [Journal Article] Electronic structure of 3o-twisted bilayer graphene on 4H-SiC(0001) (2021)
  • Author(s): Takushi Iimori, Anton Visikovskiy, Hitoshi Imamura, Toshio Miyamachi, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Kazuhiko Mase, Kan Nakatsuji, Satoru Tanaka, and Fumio Komori
  • Journal Title: Physical Review Materials Volume: 5 Pages: 1-6
  • Peer Reviewed
• [Journal Article] Realizing large out-of-plane magnetic anisotropy in L10-FeNi films grown by nitrogen- surfactant epitaxy on Cu(001) (2020)
  • Author(s): K. Kawaguchi, T. Miyamachi, T. Iimori, Y. Takahashi, T. Hattori, T. Yokoyama, M. Kotsugi, F. Komori
  • Journal Title: PHYSICAL REVIEW MATERIALS Volume: 4 Issue: 5 Pages: 054403-054403
  • DOI: 10.1103/physrevmaterials.4.054403
  • Peer Reviewed
• [Journal Article] Twisted bilayer graphene fabricated by direct bonding in a high vacuum (2020)
  • Author(s): Hitoshi Imamura, Anton Visikovskiy, Ryosuke Uotani, Takashi Kajiwara, Hiroshi Ando, Takushi Iimori, Kota Iwata, Toshio Miyamachi, Kan Nakatsuji, Kazuhiko Mase, Tetsuroh Shirasawa, Fumio Komori, Satoru Tanaka
  • Journal Title: Applied Physics Express Volume: 13 Issue: 7 Pages: 075004-075004
  • DOI: 10.35848/1882-0786/ab99d1
  • Peer Reviewed
• [Journal Article] Topological Surface State of Bi2Se3 Modified by Adsorption of Organic Donor Molecule Tetrathianaphthacene (2020)
  • Author(s): Kitazawa Tatsuya、Yaji Koichiro、Shimozawa Kosuke、Kondo Hiroshi、Yamanaka Takayoshi、Yaguchi Hiroshi、Ishida Yukiaki、Kuroda Kenta、Harasawa Ayumi、Iwahashi Takashi、Ouchi Yukio、Komori Fumio、Shin Shik、Kanai Kaname
  • Journal Title: Advanced Materials Interfaces Volume: 7 Issue: 14 Pages: 2000524-2000524
  • DOI: 10.1002/admi.202000524
  • Peer Reviewed
• [Journal Article] Orbital angular momentum induced spin polarization of 2D metallic bands (2020)
  • Author(s): Takahiro Kobayashi, Yoshitaka Nakata, Koichiro Yaji, Tatsuya Shishidou, Daniel Agterberg, Shunsuke Yoshizawa, Fumio Komori, Shik Shin, Michael Weinert, Takashi Uchihashi, and Kazuyuki Sakamoto
  • Journal Title: Physical Review Letters Volume: 125 Issue: 17 Pages: 176401-176401
  • DOI: 10.1103/physrevlett.125.176401
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Fully spin polarised bulk states in ferroelectric GeTe (2020)
  • Author(s): J. Krempasky, M. Fanciulli, L. Nicolai, J. Minar, H. Volfova, O. Caha, V. V. Volobuev, J. Sanchez-Barriga, K. Kuroda, K. Yaji, S. Shin, F. Komori, G. Springholz and J. H. Dil
  • Journal Title: Physical Review Research Volume: 2 Issue: 1 Pages: 013107-013107
  • DOI: 10.1103/physrevresearch.2.013107
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Sensing surface lattice strain with Kondo resonance of single Co adatom (2020)
  • Author(s): Iwata Kota、Miyamachi Toshio、Minamitani Emi、Komori Fumio
  • Journal Title: Applied Physics Letters Volume: 116 Issue: 5 Pages: 051604-051604
  • DOI: 10.1063/1.5142064
  • Peer Reviewed
• [Journal Article] Electronic and magnetic properties of the Fe2N monolayer film tuned by substrate symmetry (2019)
  • Author(s): Hattori Takuma、Miyamachi Toshio、Yokoyama Toshihiko、Komori Fumio
  • Journal Title: Journal of Physics: Condensed Matter Volume: 31 Issue: 25 Pages: 255001-255001
  • DOI: 10.1088/1361-648x/ab0fbc
  • Peer Reviewed
• [Journal Article] Fabrication of L10-type FeCo ordered structure using a periodic Ni buffer layer (2019)
  • Author(s): Ito Hisaaki、Saito Masahiro、Miyamachi Toshio、Komori Fumio、Koganezawa Tomoyuki、Mizuguchi Masaki、Kotsugi Masato
  • Journal Title: AIP Advances Volume: 9 Issue: 4 Pages: 045307-045307
  • DOI: 10.1063/1.5079982
  • Peer Reviewed / Open Access
• [Journal Article] Ultrafast Unbalanced Electron Distributions in Quasicrystalline 30° Twisted Bilayer Graphene (2019)
  • Author(s): Takeshi Suzuki*, Takushi Iimori, Sung Joon Ahn, Yuhao Zhao, Mari Watanabe, Jiadi Xu, Masami Fujisawa, Teruto Kanai, Nobuhisa Ishii, Jiro Itatani, Kento Suwa, Hirokazu Fukidome, Satoru Tanaka, Joung Real Ahn, Kozo Okazaki, Shik Shin, Fumio Komori*, Iwao Matsuda*
  • Journal Title: ACS Nano Volume: 13 Issue: 10 Pages: 11981-11987
  • DOI: 10.1021/acsnano.9b06091
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fermi level tuning of one-dimensional giant Rashba system on a semiconductor substrate: Bi/GaSb(110)-(2×1) (2019)
  • Author(s): T. Nakamura, Y. Ohtsubo, N. Tokumasu, P. Le Fevre, F. Bertran, S. Ideta, K. Tanaka, K. Kuroda, K. Yaji, A. Harasawa, S. Shin, F. Komori , S. Kimura
  • Journal Title: Physical Review Materials Volume: 3 Issue: 12 Pages: 126001-126001
  • DOI: 10.1103/physrevmaterials.3.126001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Coexistence of two types of spin splitting originating from different symmetries (2019)
  • Author(s): Koichiro Yaji, Anton Visikovskiy, Takushi Iimori, Kenta Kuroda, Singo Hayashi, Takashi Kajiwara, Satoru Tanaka, Fumio Komori and Shik Shin
  • Journal Title: Physical Review Letters Volume: 122 Issue: 12 Pages: 126403-126403
  • DOI: 10.1103/physrevlett.122.126403
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Fabrication of L10-FeNi by pulsed-laser deposition (2019)
  • Author(s): Saito Masahiro、Ito Hisaaki、Suzuki Yuta、Mizuguchi Masaki、Koganezawa Tomoyuki、Miyamachi Toshio、Komori Fumio、Takanashi Koki、Kotsugi Masato
  • Journal Title: Applied Physics Letters Volume: 114 Issue: 7 Pages: 072404-072404
  • DOI: 10.1063/1.5087041
  • Peer Reviewed / Open Access
• [Journal Article] Dynamic Interface Formation in Magnetic Thin Film Heterostructures (2018)
  • Author(s): Nakashima Shuhei、Miyamachi Toshio、Tatetsu Yasutomi、Takahashi Yukio、Takagi Yasumasa、Gohda Yoshihiro、Yokoyama Toshihiko、Komori Fumio
  • Journal Title: Advanced Functional Materials Volume: 29 Issue: 3 Pages: 18045941-8
  • DOI: 10.1002/adfm.201804594
  • Peer Reviewed
• [Presentation] 10.7 eV レーザーによるトポロジカル表面状態の偏光依存スピン分解 ARPES (2021)
  • Author(s): 川口海周, 黒田健太, Zhigang Zhao, 谷俊太郎, 原沢あゆみ, 矢治光一郎, 野口亮, 藤澤正美, 辛埴, 小森文夫, 小林洋平, 近藤猛
  • Organizer: 日本物理学会
• [Presentation] Cu(001)表面上のFe薄膜に及ぼす酸素・窒素サーファクタントの影響 (2021)
  • Author(s): 木村彰博, 森井七生, 佐藤圭介, 長友慶, 小澤健一, 小森文夫, 飯盛拓嗣, 平山博之, 中辻寛
  • Organizer: 日本物理学会
• [Presentation] n-type Si(111)√3×√3-B表面上のBi(110)超薄膜の電子状態 (2021)
  • Author(s): 中村玲雄, 勝俣錬, 潮田亮太, 大内拓実, 小森文夫, 飯盛拓嗣, 平山博之, 中辻寛
  • Organizer: 日本物理学会
• [Presentation] Si(111)√3×√3-(Bi,In)表面の電子状態 (2021)
  • Author(s): 勝俣錬, 中村玲雄, 金野達, 木村彰博, 大内拓実, 永友慶, 田中和也, 下川裕理, 小澤健一, 間瀬一彦, 小森文夫, 飯盛拓嗣, 平山博之, 中辻寛
  • Organizer: 日本物理学会
• [Presentation] 原子層ラシュバ型超伝導体の電子輸送研究 (2021)
  • Author(s): 横田健太, 吉澤俊介, 小林宇宏, 中田慶隆, 矢治光一郎, 小森文夫, 辛埴, 坂本一之, 内橋隆
  • Organizer: 日本物理学会
• [Presentation] 窒素サーファクタント効果により作製したFeCo合金超薄膜の構造と磁気状態 (2021)
  • Author(s): 宮町俊生, 高橋優樹, 飯盛拓嗣, 服部卓磨, 山本航平, 小板谷貴典, 横山利彦, 小嗣真人, 小森文夫
  • Organizer: 日本物理学会
• [Presentation] シリコン立体構造ファセット表面からの光電子分光 (2021)
  • Author(s): 服部賢, 東嵩晃, 楊浩邦, Aydar.Irmikimov, Liliany N. Pamasi, 服部梓, 大坂藍, 田中秀和, 飯盛拓嗣
  • Organizer: 日本物理学会
• [Presentation] 10.7 eV レーザーを用いた時間・スピン・角度分解光電子分光装置の開発 (2020)
  • Author(s): 川口海周，黒田健太，Zhigang Zhao，原沢あゆみ，矢治光一郎A，野口亮，谷俊太郎，藤澤正美，辛埴，小森文夫，小林洋平，近藤猛
  • Organizer: 日本物理学会秋季分科会
• [Presentation] 構造制御されたSmB6(001) 表面の金属的な電子状態 (2020)
  • Author(s): 宮町俊生，菅滋正，飯盛拓嗣，伊賀文俊，小森文夫
  • Organizer: 日本物理学会秋季分科会
• [Presentation] SiC(0001) 上のツイストグラフェンの電子状態のツイスト角度依存性 (2020)
  • Author(s): 飯盛拓嗣、宮町俊生，服部琢磨，中辻寛，北村未歩, 堀場弘司，間瀬一彦、梶原隆司， Visikovskiy Anton，田中悟，小森文夫
  • Organizer: 日本物理学会秋季分科会
• [Presentation] モアレパターンを利用した窒化鉄膜の局所ひずみ観察 (2020)
  • Author(s): 服部卓磨，河村紀一，飯盛拓嗣，宮町俊生，小森文夫
  • Organizer: 日本表面真空学会学術講演会
• [Presentation] Si(110)3x2-Bi表面の電子状態 (2020)
  • Author(s): 金野達，勝俣錬，木村彰博，中村玲雄，諸貫亮太，山崎詩郎，小澤健一，間瀬一彦，飯盛拓嗣，小森文夫，平山博之，中辻寬
  • Organizer: 日本表面真空学会学術講演会
• [Presentation] ツイスト角に依存したツイストグラフェン電子状態のARPESによる研究 (2020)
  • Author(s): 飯盛拓嗣，今村均，VisikovskiyAnton，魚谷亮介，梶原隆司，宮町 俊生，服部琢磨，原沢あゆみ，矢治光一郎，中辻寛，北村未歩，堀場弘司，間瀬一彦，田中悟，小森文夫
  • Organizer: 日本表面真空学会学術講演会
• [Presentation] 偏光励起SARPESで観測するスピン軌道結合電子状態 (2020)
  • Author(s): 矢治光一郎，黒田健太，小森文夫，辛埴
  • Organizer: 第33回日本放射光学会年会・放射光科学合同シンポジウム
• [Presentation] Atomic structure and electron-phonon coupling in 1D-nanorippled graphene (2019)
  • Author(s): Fumio Komori
  • Organizer: 4th Tsinghua Univ.-Univ. of Tokyo Joint Symposium
  • Int'l Joint Research / Invited
• [Presentation] Ultrafast Carrier Dynamics in a Twisted BilayerGraphene Quasicrystal (2019)
  • Author(s): T. Suzuki, T. Iimori, S. J. Ahn, Z. Yuhao, M. Watanabe, J. Xu, M. Fujisawa, T. Kanai, N. Ishii, J. Itatani, K. Suwa, H. Fukidome, S. Tanaka, J. R. Ahn, K. Okazaki, S. Shin, F. Komori, I. Matsuda
  • Organizer: Ultrafast Surface Dynamics 11
  • Int'l Joint Research
• [Presentation] Coexistence of Zeeman-and Rashba-type spin-split bands for a Sn atomic layer on SiC(0001) (2019)
  • Author(s): K. Yaji, S. Hayashi, A. Visikovskiy, S. Shin, S. Tanaka and F. Komori
  • Organizer: 17th International Conference on the Formation of Semiconductor Interfaces
  • Int'l Joint Research
• [Presentation] Magnetic properties of the iron nitride monolayers tuned by the symmetry of the substrate (2019)
  • Author(s): Takuma Hattori, Takushi Iimori, Toshio Miyamachi, Toshihiko Yokoyama, Fumio Komori
  • Organizer: IVC-21
  • Int'l Joint Research
• [Presentation] Dynamic heterointerface formation in magnetic few monolayers (2019)
  • Author(s): Fumio Komori, Shuhei Nakashima, Toshio Miyamachi, Yukio Takahashi, Yasutomi Tatetsu, Yoshihiro Gohda,YasumasaTakagi, Toshihiko Yokoyama
  • Organizer: IVC-21
  • Int'l Joint Research
• [Presentation] Electron Dynamics in Epitaxial Graphene and Topological Insulator Surface (2019)
  • Author(s): Fumio Komori
  • Organizer: Gordon Research Conference Dynamics at Surfaces 2019
  • Int'l Joint Research / Invited
• [Presentation] Two types of spin textures in a Sn atomic layer at graphene/SiC(0001) interface (2019)
  • Author(s): Fumio Komori
  • Organizer: IBS conference on Surface Atomic wires
  • Int'l Joint Research / Invited
• [Presentation] Graphene nanoribbons on macro-facets of vicinal 6H-SiC(0001) (2019)
  • Author(s): K. Fukuma, A. Visikovskiy, T. Kajiwara, T. Iimori, F. Komori, S. Tanaka
  • Organizer: International Symposiumon Epi-Graphene
  • Int'l Joint Research
• [Presentation] Periodically rippled graphene formed on 4H-SiC m-plane surface (2019)
  • Author(s): Ryosuke Uotani, Hitoshi Imamura, Takashi Kajiwara, Anton Visikovskiy, Takushi Iimori, Fumio Komori, Satoru Tanaka
  • Organizer: International Symposiumon Epi-Graphene
  • Int'l Joint Research
• [Presentation] Moire induced electronic structure of twisted bilayer graphene (2019)
  • Author(s): H. Imamura, R. Uotani, T. Kajiwara, A. Visikovskiy, T. Iimori, T. Miyamachi, K. Nakatsuji, K. Mase, F. Komori, S. Tanaka
  • Organizer: International Symposiumon Epi-Graphene
  • Int'l Joint Research
• [Presentation] ビスマス超薄膜における半金属－半導体転移の微視的機構の解明 (2019)
  • Author(s): 伊藤俊, 有田将司, 春山潤, Baojie Feng, Wei-Chuan Chen, 生天目博文, 谷口雅樹, Cheng-Maw Cheng, Guang Bian, Shu-Jung Tang, Tai-Chang Chiang, 杉野修, 小森文夫, 松田巌
  • Organizer: 日本物理学会
• [Presentation] Cu(001)表面上Co単原子の近藤効果のCu格子の歪みに対する応答のSTM測定 (2019)
  • Author(s): 岩田孝太, 宮町俊生, 南谷英美, 小森文夫
  • Organizer: 日本物理学会
• [Presentation] 水素修飾による窒化銅表面上のCo単一原子のスピン状態変化 (2019)
  • Author(s): 宮町俊生, Thomas Gozlinski, Wulf Wulfhekel, 小森文夫
  • Organizer: 日本物理学会
• [Presentation] 時間分解光電子分光法による準結晶ねじれ二層グラフェンにおける超高速キャリアダイナミクスの研究 (2019)
  • Author(s): 鈴木剛, 飯盛拓嗣, Sung Joon Ahn, 趙宇豪, 渡邉真莉, 徐佳笛, 藤澤正美, 金井輝人, 石井順久, 板谷治郎, 諏訪健斗, 吹留博一, 田中悟, Joung Real Ahn, 岡﨑浩三, 辛埴, 小森文夫, 松田巌
  • Organizer: 日本物理学会
• [Presentation] グラフェン/SiC(0001)界面のSn単原子層における異なる型のスピン分裂バンドの共存 (2019)
  • Author(s): 矢治光一郎, Anton Visikovskiy, 飯盛拓嗣, 林真吾, 梶原隆司, 黒田健太, 田中悟, 小森文夫, 辛埴
  • Organizer: 日本物理学会
• [Presentation] SiC(0001)上のツイストグラフェンの電子状態について (2019)
  • Author(s): 飯盛拓嗣, 今村均, 魚谷亮介, 宮町俊生, 中辻寛, 間瀬一彦, 梶原隆司, Visikovskiy Anton, 田中悟, 小森文夫
  • Organizer: 日本物理学会
• [Presentation] Cu(001)基板上の窒化コバルト鉄膜の作製と構造評価 (2019)
  • Author(s): 服部卓磨, 飯盛拓嗣, 宮町俊生, 小森文夫
  • Organizer: 日本物理学会
• [Presentation] パルスレーザー蒸着(PLD)法を用いたAl2O3(0001)上のFeNi薄膜の作製 (2019)
  • Author(s): 宮下 拓也, 伊藤 久晃, 熊谷 卓也, 小金澤 智之,宮町 俊生, 小森 文夫, 小嗣 真人
  • Organizer: 応用物理学会秋季大会
• [Presentation] 窒素吸着Cu(001)面上のL10-FeNi原子層成長とその磁性 (2019)
  • Author(s): 川口海周, 宮町俊生, 高橋優樹, 飯盛拓嗣, 服部卓磨, 小板谷貴典, 小嗣真人, 横山利彦, 小森文夫
  • Organizer: 応用物理学会秋季大会
• [Presentation] モアレ系２層グラフェンの形成と電子状態の観察 (2019)
  • Author(s): 今村均, 魚谷亮介, 梶原隆司, アントン ビシコフスキー, 飯盛拓嗣, 宮町俊生, 中辻寛, 間瀬一彦, 小森文夫, 田中悟
  • Organizer: 応用物理学会秋季大会
• [Presentation] Bi/GaSb(110)-(2×1)表面におけるスピン偏極擬一次元金属の電子状態 (2019)
  • Author(s): 中村拓人, 大坪嘉之, Patrick Le Fevre, Francois Bertran, 黒田健太, 矢治光一郎, 原沢あゆみ, 辛埴, 小森文夫, 木村真一
  • Organizer: 応用物理学会秋季大会
• [Presentation] SiC-m面の周期リップルグラフェン (2019)
  • Author(s): 魚谷亮介, 今村均, 梶原隆司, ビシコフスキー アントン, 飯盛拓嗣, 宮町俊生, 小森文夫, 田中悟
  • Organizer: 応用物理学会秋季大会
• [Presentation] 窒素サーファクタント効果を用いた高品質FeCo合金超薄膜の作製 (2019)
  • Author(s): 高橋優樹，宮町俊生，飯盛拓嗣，服部卓磨，山本航平，小板谷貴典，横山利彦，小森文夫，小嗣真人
  • Organizer: 磁気学会秋季大会
• [Presentation] Electron dynamics in topological surface and twisted bilayer graphene (2019)
  • Author(s): Fumio Komori
  • Organizer: Workshop on Nano and Ultrafast Surface Sciences
  • Int'l Joint Research / Invited
• [Presentation] Magnetic anisotropy of L10-FeNi fabricated by N-surfactant epitaxy (2019)
  • Author(s): Toshio Miyamachi, Kaishu Kawaguchi, Takushi Iimori, Yuki Takahashia, Takuma Hattori, Toshihiko Yokoyama, Masato Kotsugi, Fumio Komori
  • Organizer: 19th International Conferenceon Solid Films and Surfaces
  • Int'l Joint Research
• [Presentation] SARPES Studies of surface states (2019)
  • Author(s): K. Yaji
  • Organizer: 19th International Conferenceon Solid Films and Surfaces
  • Int'l Joint Research / Invited
• [Presentation] Toward fabrication of L10-FeCo thin films using the nitrogen surfactant effect (2019)
  • Author(s): Yuki Takahashi, Toshio Miyamachi, Takushi Iimori, Takuma Hattori, Takanori Koitaya, Kohei Yamamoto, Toshihiko Yokoyama, Masato Kotsugi, Fumio Komori
  • Organizer: 19th International Conferenceon Solid Films and Surfaces
  • Int'l Joint Research
• [Presentation] グラフェン/Sn/SiC(0001)のスピン偏極バンドと対称性 (2019)
  • Author(s): 矢治光一郎，VisikovskiyAnton，飯盛拓嗣，林真吾，梶原隆司，黒田健太，田中悟，小森文夫
  • Organizer: 表面真空学会学術講演会
• [Presentation] Cu基板上の3回対称窒化鉄膜 (2019)
  • Author(s): 服部卓磨，飯盛拓嗣，宮町俊生，小森文夫
  • Organizer: 表面真空学会学術講演会
• [Presentation] レーザースピン分解ARPESで調べるAg/Au(111)の量子井戸閉じ込めによるスピン分裂バンド制御 (2019)
  • Author(s): 野口亮，黒田健太，河村光晶，矢治光一郎，原沢あゆみ，飯盛拓嗣，小森文夫，辛埴，近藤猛
  • Organizer: 表面真空学会学術講演会
• [Presentation] Atomic-scale structural and electronic properties of YbB12(001) surfaces (2019)
  • Author(s): T. Miyamachi, K. Iwata, T. Iimori, Y. Ohtsubo, S. Kimura, F. Iga, and F. Komori
  • Organizer: Topological Phases and Functionality of Correlated Electron Systems 2019
  • Int'l Joint Research
• [Presentation] 窒素吸着Cu(001)表面上でのFeNi原子層成長における作製条件の最適化 (2019)
  • Author(s): 高橋優樹, 川口海周, 服部卓磨, 飯盛拓嗣, 宮町俊生, 小嗣真人, 小森文夫
  • Organizer: 応用物理学会春季学術講演会
• [Presentation] 回転角度制御したモアレ系二層グラフェンの電子状態 (2019)
  • Author(s): 今村均, 魚谷亮介, 梶原隆司, ビシコフスキー アントン, 飯盛拓嗣, 宮町俊生, 中辻寛, 間瀬一彦, 小森文夫, 田中悟
  • Organizer: 応用物理学会春季学術講演会
• [Presentation] SiC(0001)表面上のツイスト2層グラフェンの電子状態 (2019)
  • Author(s): 飯盛拓嗣, 今村均, 魚谷亮介, 宮町俊生, 中辻寛, 間瀬一彦, 梶原隆司, Visikovskiy Anton, 田中悟, 小森文夫
  • Organizer: 物理学会年会
• [Presentation] 回転角度制御したモアレ系積層グラフェンの作製 (2019)
  • Author(s): 田中悟, 今村均, 魚谷亮介, 梶原隆司, Visikovskiy Anton, 飯盛拓嗣, 小森文夫
  • Organizer: 物理学会年会
• [Presentation] YbB12(001)単一表面の軌道敏感STM観察 (2019)
  • Author(s): 宮町俊生, 岩田孝太, 飯盛拓嗣, 大坪嘉之, 木村真一 伊賀文俊, 小森文夫
  • Organizer: 物理学会年会
• [Presentation] Cu(001)に吸着したCo単原子の近藤効果のCu格子の圧縮による変化 (2019)
  • Author(s): 岩田孝太, 宮町俊生, 南谷英美, 小森文夫
  • Organizer: 物理学会年会
• [Presentation] Cu(111)基板上の三角格子窒化鉄薄膜の構造と電子状態 (2019)
  • Author(s): 服部卓磨, 飯盛拓嗣, 宮町俊生, 小森文夫
  • Organizer: 物理学会年会
• [Presentation] 窒素吸着Cu(001)面上のFeNi原子層成長とその磁性 (2019)
  • Author(s): 川口海周, 高橋優樹, 服部卓磨, 宮町俊生, 飯盛拓嗣, 小板谷貴典, 横山利彦, 小嗣真人, 小森文夫
  • Organizer: 物理学会年会
• [Presentation] 三角格子を有する窒化鉄単原子層膜の成長と電子状態 (2018)
  • Author(s): 服部 卓磨、 宮町 俊生、 小森文夫
  • Organizer: 日本表面科学会第３回関東支部講演大会
• [Presentation] Laser-SARPES study of spin-texture of Sn atomic layer at graphene/SiC(0001) interface (2018)
  • Author(s): F. Komori, K. Yaji, S. Hayashi, A. Visikovskiy, S. Shin, S. Tanaka
  • Organizer: EVC-18
  • Int'l Joint Research
• [Presentation] Emerging challenges in Surface Science (2018)
  • Author(s): Fumio Komori
  • Organizer: VASSCA-9
  • Int'l Joint Research / Invited
• [Presentation] Iron spin-reorientation transition by dynamic interface alloy formation with Mn (2018)
  • Author(s): F. Komori, S. Nakashima, T. Miyamachi, Y. Tatetsu, Y. Takahashi, Y. Takagi, Y. Gohda, T. Yokoyama
  • Organizer: VASSCA-9
  • Int'l Joint Research
• [Presentation] Spin-polarized band structure of a Sn atomic layer at graphene/SiC(0001) interface (2018)
  • Author(s): Koichiro Yaji, Anton Visikovskiy, T. Iimori, K. Kuroda, S. Hayashi, T. Kajiwara, S. Tanaka, F. Komori, S. Shin
  • Organizer: ECOSS-34
  • Int'l Joint Research
• [Presentation] 対称性の違いによる窒化鉄単原子層膜の局所電子状態と磁性の変化 (2018)
  • Author(s): 服部卓磨, 宮町俊生, 飯盛拓嗣, 高木康多, 上村洋平, 横山利彦, 小森文夫
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] 銅(001)面上の鉄超薄膜の結晶成長とその磁性 (2018)
  • Author(s): 河村紀一, 小森文夫
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] STMによる近藤効果の測定を通じた格子歪みの評価 (2018)
  • Author(s): 岩田孝太, 宮町俊生, 南谷英美, 小森文夫
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] 窒素吸着Cu(001)表面上でのFeNi原子層成長の蒸着時温度依存性 (2018)
  • Author(s): 川口海周, 高橋優樹, 服部卓磨, 宮町俊生, 小嗣真人, 小森文夫
  • Organizer: 日本物理学会 2018年秋季大会
• [Presentation] Resolving the microscopic driving mechanisms of a semimetal-to-semiconductor transition in ultrathin bismuth films (2018)
  • Author(s): Suguru Ito, Masashi Arita, Baojie Feng, Wei-Chuan Chen, Hirofumi Namatame, Masaki Taniguchi, Cheng-Maw Cheng, Guang Bian, Shu-Jung Tang, Tai-Chang Chiang, Fumio Komori, Iwao Matsuda
  • Organizer: International Workshop on Trends in Advanced Spectroscopy in Materials Science
  • Int'l Joint Research
• [Presentation] Effect of Lattice Distortion on Kondo Resonance of Single Co Atoms on Cu(001) Measured by Scanning Tunneling Microscopy (2018)
  • Author(s): K. Iwata, T. Miyamachi, E. Minamitani and F. Komori
  • Organizer: ACSIN-14 & ICSPM26
  • Int'l Joint Research
• [Presentation] Resolving the microscopic driving mechanisms of a semimetal-to-semiconductor transition in ultrathin bismuth films (2018)
  • Author(s): S. Ito, M. Arita, B. Feng, W.-C. Chen, C.-M. Cheng, G. Bian, S.-J. Tang, T.-C. Chiang, F. Komori and I. Matsuda
  • Organizer: ACSIN-14 & ICSPM26
  • Int'l Joint Research
• [Presentation] 対称性の異なる銅基板上に成長した窒化鉄原子層の周期的電子状態変調 (2018)
  • Author(s): 小森文夫, 服部琢磨, 家永紘一郎, 宮町俊生
  • Organizer: 日本表面真空学会講演会
• [Remarks] 答えは「電子の動く軌道」！ 原子層結晶で“電子磁石”が現れる機構を解明
  • URL: http://www.issp.u-tokyo.ac.jp/maincontents/news2.html?pid=11463
• [Remarks] 磁場に強い超伝導を実現する新たなメカニズムを発見
  • URL: http://www.issp.u-tokyo.ac.jp/maincontents/news2.html?pid=12837
• [Remarks] 原子層膜に存在するピコメートルの局所ひずみを測定
  • URL: http://www.issp.u-tokyo.ac.jp/maincontents/news2.html?pid=12886