| Project/Area Number |
25246025
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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 東京大学, 理学(系)研究科(研究院), 教授 (00228446)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAYAMA Akari 東京大学, 大学院理学系研究科, 助教 (70722338)
AKIYAMA Ryota 東京大学, 大学院理学系研究科, 助教 (40633962)
HIRAHARA Toru 東京工業大学, 大学院理工学研究科, 准教授 (30451818)
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| Research Collaborator |
Saranin Alexander Institute of Automation and Control Processes, ロシア科学アカデミー, 教授
HOBARA Rei 東京大学, 大学院理学系研究科, 特任研究員 (30568176)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥45,890,000 (Direct Cost: ¥35,300,000、Indirect Cost: ¥10,590,000)
Fiscal Year 2015: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2014: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2013: ¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000)
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| Keywords | トポロジカル絶縁体 / ラシュバ効果 / スピン偏極電流 / スピン流 / ラシュバ超伝導 / フォトガルバニック効果 / スピンホール効果 / スピン軌道相互作用 / スピン・運動量ロッキング / ヘテロ界面 / ディラック・コーン / 電流誘起スピン偏極 / 多探針走査トンネル顕微鏡 / スピン偏極イオン散乱分光法 |
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| Outline of Final Research Achievements |
The present research on transport phenomena at surfaces of strong spin-orbit coupling materials has provided the following results. (1) Direct detection of suppression of back scattering of surface-state carriers on topological insulators. (2) Detection of photogalvanic effect (spin-polarized current induced by irradiation of circularly polarized light) at Rashba-type spin-split surface states. (3) Detection of energy-gap opening in a topological Dirac-cone type state by proximity effect of magnetic material. (4) Detection of spin Hall effect at ultrathin films of topological insulators. (5) Discovery of superconductivity at Rashba-type spin-split surface states. (6) Discovery of superconductivity at Ca-intercalated double-layer graphene.
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