2009 Fiscal Year Final Research Report
Diluted magnetic surface states on semiconductor crystals and its application to spintronics
| Project/Area Number |
19206006
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HASEGAWA Shuji The University of Tokyo, 大学院・理学系研究科, 教授 (00228446)
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| Co-Investigator(Kenkyū-buntansha) |
HIRAHARA Toru 東京大学, 大学院・理学系研究科, 助教 (30451818)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 表面磁気光学効果 / 希薄磁性表面 / 表面電気伝導 / 表面物性 / スピントロニクス / 近藤効果 / RKKY相互作用 / 低次元磁性 |
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| Research Abstract |
(1) We have developed an ultra-high-vacuum surface-magneto-optical Kerr effect (UHV-SMOKE) system to investigate magnetic properties of surface states. The method has revealed that the magnetic property of Cobalt atomic layers sensitively depends on the substrate structures beneath them. (2) We have revealed, by using spin-resolved photoemission spectroscopy and the first-principle calculations, that the surface states of non-magnetic materials, Bismuth and its alloys (topological insulators), are spin-split. (3) We have directly detected (inverse) spin-Hall effect on Bismuth film surfaces that have large spin-orbit interaction, by measuring surface-state transport with a four-tip STM (scanning tunneling microscope) apparatus.
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Research Products
(65 results)
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[Journal Article] Origin of the surface-state band-splitting in ultrathin Bi Flms : From a Rashba effect to a parity effect2008
Author(s)
T. Hirahara, K. Miyamoto, A. Kimura, Y. Niinuma, G. Bihlmayer, E. V. Chulkov, T. Nagao, I. Matsuda, S. Qiao, K. Shimada, H. Namatame, M. Taniguchi, S. Hasegawa
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Journal Title
New Journal of Physics 10
Pages: 083038-1--8
Peer Reviewed
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[Journal Article] Four-Point Probe Resistance Measurements Using PtIr-Coated Carbon Nanotube Tips2007
Author(s)
S. Yoshimoto, Y. Murata, K. Kubo, K. Tomita, K. Motoyoshi, T. Kimura, H. Okino, R. Hobara, I. Matsuda, S. Honda, M. Katayama, S. Hasegawa
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Journal Title
Nano Letters 7
Pages: 956-960
Peer Reviewed
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[Journal Article] Direct Observation of Spin Splitting in Bismuth Surface States2007
Author(s)
T. Hirahara, K. Miyamoto, I. Matsuda, T. Kadono, A. Kimura, T. Nagao, G. Bihlmayer, E. V. Chulkov, S. Qiao, K. Shimada, H. Namatame, M. Taniguchi, S. Hasegawa
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Journal Title
Physical Review B 76
Pages: 153305-1--5
Peer Reviewed
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[Presentation] Direct observation of spin splitting in surface states of non-magnetic Bi2007
Author(s)
T. Hirahara, K. Miyamoto, I. Matsuda, T. Kadono, A. Kimura, T. Nagao, G. Bihlmayer, E. V. Chulkov, S. Qiao, K. Shimada, H. Namatame, M. Taniguchi, S. Hasegawa
Organizer
The 9th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-9)
Place of Presentation
東京大
Year and Date
2007-11-15
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[Presentation] Direct observation of spin splitting in surface states of non-magnetic Bi2007
Author(s)
T. Hirahara, K. Miyamoto, I. Matsuda, T. Kadono, A. Kimura, T. Nagao, G. Bihlmayer, E. V. Chulkov, S. Qiao, K. Shimada, H. Namatame, M. Taniguchi, S. Hasegawa
Organizer
JSPS-NSFC-KOSEF A3 Foresight Program on Sub-10nm Wires; New Physics and Chemistry
Place of Presentation
北京
Year and Date
2007-07-22
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[Presentation] Electronic Transport at Monolayers and Atomic Chains on Silicon Surfaces2007
Author(s)
S. Hasegawa
Organizer
The 17th International Vacuum Congress (IVC-17), 13th International Conference on Surface Science (ICSS-13), International Conference on Nanoscience and Technology 2007 (ICN+T2007), 6th Nordic Conference on Surface Science (NCSS-6), 22nd Nordic Semiconductor Meeting (NSM-22) and 4th Swedish Vacuum and Materials Science Meeting (SVM-4)
Place of Presentation
Stockholm, Sweden.
Year and Date
2007-07-04
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