Search of Rashba superconductors in atomic-layer surface alloys
| Project/Area Number |
16K17727
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Condensed matter physics I
|
|---|
| Research Institution | National Institute for Materials Science |
|---|
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)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| 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)
|
|---|
| 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 |
|---|
| 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.
|
Report
(3 results)
Research Products
(15 results)
-
[Journal Article] Controlled Modification of Superconductivity in Epitaxial Atomic Layer-Organic Molecule Heterostructures2017
Author(s)
S. Yoshizawa, E. Minamitani, S. Vijayaraghavan, P. Mishra, Y. Takagi, T. Yokoyama, H. Oba, J. Nitta, K. Sakamoto, S. Watanabe, T. Nakayama, and T. Uchihashi
-
Journal Title
Nano Lett.
Volume: 17
Issue: 4
Pages: 2287-2293
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
-
-
-
-
-
-
-
-
-
-
-
-
-
-
