インターカレートされたトポロジカル絶縁体の構造と電子的特性
Project/Area Number |
13F03783
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Research Category |
Grant-in-Aid for JSPS Fellows
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Allocation Type | Single-year Grants |
Section | 外国 |
Research Field |
Engineering fundamentals
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Research Institution | Hiroshima University |
Principal Investigator |
島田 賢也 広島大学 (10284225)
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Co-Investigator(Kenkyū-buntansha) |
SCHWIER EIKE FAB
SCHWIER Eike 広島大学, 放射光科学研究センター, 外国人特別研究員
SCHWIER Eike Fabian 広島大学, 放射光科学研究センター, 外国人特別研究員
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Declined (Fiscal Year 2015)
|
Budget Amount *help |
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2015: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2014: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2013: ¥700,000 (Direct Cost: ¥700,000)
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Keywords | トポロジカル絶縁体 / 角度分解光電子分光 / 光電子回折 / インターカレーション / トボロジカル絶縁体 |
Outline of Annual Research Achievements |
本研究では、鉄などの磁性金属や金や銅などの非磁性金属をトポロジカル絶縁体の表面に微量蒸着し、表面および金属原子がインターカレートされた界面構造および表面電子状態を解明することを目的としている。平成26年度は、広島大学放射光科学研究センターにおいてトポロジカル絶縁体Bi2Se3に条件を変えながら数原子層の金(Au)を蒸着し、角度分解光電子分光によりその電子状態を調べた。その結果、基板の温度に依存してある臨界的なAu膜厚が存在し、それを超えるとトポロジカル表面準位が顕著に変化することを明らかにした。トポロジカル絶縁体TlBiSe2については、STM像の観察および内殻準位の光電子回折パターンから、劈開面においてはちょうど一原子層分だけ高さが異なる島状構造が存在し、それはセレンの欠陥に由来することが示唆された。フリブール大学との国際共同研究でスイス放射光実験施設においてX線光電子回折実験を行い、第一原理バンド理論で解析を進めた。さらにプラハ大学の理論グループと共同して、表面の格子欠陥がある場合、格子定数がどうなるのかについて、多重散乱理論を用いた解析を進めた。またTl5d内殻準位で観測された表面・バルクの内殻準位シフトについて理論的解析を進めた。
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Research Progress Status |
翌年度、交付申請を辞退するため、記入しない。
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Strategy for Future Research Activity |
翌年度、交付申請を辞退するため、記入しない。
|
Report
(2 results)
Research Products
(17 results)
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[Journal Article] Structural and electronic properties of manganese-doped Bi2Te3 epitaxial layers2015
Author(s)
J. Ruzicka, O. Caha, V. Holy, H. Steiner, V. Volobuiev, A. Ney, G. Bauer, T. Duchon, K. Veltruska, I. Khalakhan, V. Matolin, E. F. Schwier, H. Iwasawa, K. Shimada, G. Springholz
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Journal Title
New Journal of Physics
Volume: 17
Issue: 1
Pages: 013028-013028
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Electronic structure of heavy fermion caged-compound Ce3Pd20X6 (X = Si, Ge) studied by photoelectron spectroscopy2015
Author(s)
Hitoshi Yamaoka, Eike F. Schwier, Masashi Arita, Kenya Shimada, Naohito Tsujii, Ignace Jarrige, Jian Jiang, Hirokazu Hayashi, Hideaki Iwasawa, Hirofumi Namatame, Masaki Taniguchi, and Hideaki Kitazawa
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Journal Title
Physical Review B
Volume: 91
Issue: 11
Pages: 115139-115139
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Symmetry Resolved Surface-Derived Electronic Structure of MoS2(0001)2014
Author(s)
Takashi Komesu, Duy Le, Quan Ma, Eike F. Schwier, Yohei Kojima, Mingtian Zheng, Hideaki Iwasawa, Kenya Shimada, Masaki Taniguchi, Ludwig Bartels, Talat Rahman and P. A. Dowben
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Journal Title
Journal of Physics: Condensed Matter
Volume: 26
Issue: 45
Pages: 455501-455501
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Occupied and Unoccupied Electronic Structure of Na doped MoS2(0001)2014
Author(s)
Takashi Komesu, Duy Le, Xin Zhang, Quan Ma, Eike F. Schwier, Yohei Kojima, Mingtian Zheng, Hideaki Iwasawa, Kenya Shimada, Masaki Taniguchi, Ludwig Bartels, Talat Rahman and P. A. Dowben
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Journal Title
Applied Physics Letters
Volume: 105
Issue: 24
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Experimental verification of the surface termination in the topological insulator T1BiSe_2 using core-level photoelectron spectroscopy and scanning tunneling microscopy2013
Author(s)
Kenta Kuroda, Mao Ye, Eike F. Schwier, Munisa Nurmamat, Kaito Shirai, Masashi Nakatake, Shigenori Ueda, Koji Miyamoto, Taichi Okuda, Hirofumi Namatame, Masaki Taniguc hi, Yoshifumi Ueda, and Akio Kimura
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Journal Title
Physical Review B
Volume: 88
Issue: 24
Pages: 245308-245315
DOI
Related Report
Peer Reviewed
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[Presentation] Probing the surface structure of TlBiSe2 using Photoelectron Diffraction, Scanning Tunneling Spectroscopy and Ab-Initio Theory2015
Author(s)
Eike F Schwier, Clement Didiot, Kenta Kuroda, Roland Stania, Jun Zhang, Elia Razzoli, Mao Ye, Hideaki Iwasawa, Matthias Munwiler, Philipp Aebi, Akio Kimura, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi
Organizer
The 19th Hiroshima International Symposium on Synchrotron Radiation
Place of Presentation
広島大学
Year and Date
2015-03-05 – 2015-03-06
Related Report
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[Presentation] Probing the surface structure of TlBiSe2 using Photoelectron Diffraction, Scanning Tunneling Spectroscopy and Ab-Initio Theory2014
Author(s)
Eike F Schwier, Clement Didiot, Kenta Kuroda, Roland Stania, Jun Zhang, Elia Razzoli, Mao Ye, Hideaki Iwasawa, Matthias Munwiler, Philipp Aebi, Akio Kimura, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi
Organizer
International Symposium on Surface Science
Place of Presentation
松江
Year and Date
2014-11-02 – 2014-11-06
Related Report
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[Presentation] The Electronic and Geometric Structure of Au deposited on Bi2Se32014
Author(s)
E. F. Schwier, M. Ye, J. Jiang, H. Iwasawa, T. Horike, Y. Nagata, H. Hayashi, A. Kimura, K. Shimada, H. Namatame, M. Taniguchi
Organizer
日本物理学会 2014年秋季大会
Place of Presentation
中部大学
Year and Date
2014-09-07 – 2014-09-10
Related Report
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[Presentation] The Electronic and Geometric Structure of Au deposited on Bi2Se32014
Author(s)
E. F. Schwier, M. Ye, J. Jiang, H. Iwasawa, T. Horike, Y. Nagata, H. Hayashi, A. Kimura, K. Shimada, H. Namatame, M. Taniguchi
Organizer
New Trends in Topological Insulators
Place of Presentation
Berlin, Germany
Year and Date
2014-07-07 – 2014-07-10
Related Report
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[Presentation] Investigation of the surface states of the Si (331)-12x1 surface and the influence of In and Bi adatoms2014
Author(s)
E. F. Schwier, C. Didiot, Y. Nagata, T. Horike, M. Zheng, H. Iwasawa, M. Nakatake, K. Shimada, H. Namatame, M. Taniguchi, P. Aebi
Organizer
The 18th Hiroshima International Symposium on Synchrotron Radiation
Place of Presentation
Hiroshima University Faculty Club, Hiroshima, Japan
Related Report
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[Presentation] High-resolution ARPES of Ce and La thin films2014
Author(s)
Y. Kojima, Y. Nagata, K. Shimada, H. Iwasawa, E. F. Schwier, T. Horike, M. Zheng, Y. Aiura, H. Namatame, M. Taniguchi
Organizer
The 18th Hiroshima International Symposium on Synchrotron Radiation
Place of Presentation
Hiroshima University Faculty Club, Hiroshima, Japan
Related Report
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[Presentation] Spin and Angle-resolved photoemission spectroscopy study of surface state in Pb (110)2014
Author(s)
T. Horike, K. Miyamoto, T. Okuda, H. Iwasawa, E. F. Schwier, J. Jiang, M. Arita, Y. Nagata, H. Hayashi, Y. Aiura, K. Shimada, H. Namatame, M. Taniguchi
Organizer
The 18th Hiroshima International Symposium on Synchrotron Radiation
Place of Presentation
Hiroshima University Faculty Club, Hiroshima. Janan
Related Report
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[Presentation] An investigation of the electronic and geometric structure of Au deposited on the topological insulator Bi_2Se_32013
Author(s)
E. F. Schwier, M. Ye, J. Jiang, H. Iwasawa, T. Horike, Y. Nagata, H. Hyashi, A. Kimura, K. Shimada, M. Taniguchi
Organizer
12th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures
Place of Presentation
Tsukuba International Congress Center, Tsukuba, Japan
Related Report