| Project/Area Number |
16K17727
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
Yoshizawa Shunsuke 国立研究開発法人物質・材料研究機構, 若手国際研究センター, ICYS 研究員 (60583276)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 超伝導 / ラシュバ効果 / 電気伝導 / 原子層 / 表面・界面構造 / 表面・界面物性 / 走査トンネル顕微鏡 / 第一原理計算 |
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| Outline of Final Research Achievements |
We investigated "Rashba superconductor," where superconductivity takes place in the energy bands exhibiting the Rashba effect, in atomic-layer materials grown on semiconductor surfaces. We performed transport measurement of the Si(111)-(√7×√3)-In superconductor in magnetic fields parallel and perpendicular to the surface. The estimated critical field at zero temperature was found to be larger than the Pauli limit of 6 T determined from the critical temperature of 3 K. Our ab initio calculations revealed the spin splitting of the energy bands. These results show that this material is a Rashba superconductor.
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