Novel phenomena of topological phases in superconductors, magnets, and Mott insulators
| Project/Area Number |
23540406
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | Osaka University (2014-2015)
Kyoto University (2011-2013) |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011-04-28 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
|---|
| Keywords | トポロジカル絶縁体 / トポロジカル超伝導 / Berry位相 / 電子相関 / ワイル半金属 / ワイル超伝導 / ベリー曲率 / スキルミオン / トポロジカル超伝導体 / ベリー位相 / 熱電効果 / モット絶縁体 / スカーミオン / 超伝導 / マヨラナ・フェルミオン / 磁性 |
|---|
| Outline of Final Research Achievements |
We have investigated theoretically novel quantum phenomena in solids with topologically nontrivial electronic structures. We have predicted the following phenomena, and confirmed a part of them via the collaboration with experimental groups. (1) Giant thermoelectric effect due to Berry phase fluctuation in chiral superconductors. It is noted that the figure of merit of this effect is largest among all previously known superconductors, and thus this finding is important for future applications to thermoelectric devices. We have confirmed this effect experimentally for the heavy fermion superconductor URu2Si2 via the collaboration with the experimental group conducted by Prof. Matsuda in Kyoto University. (2) Emergent electromagnetic phenomena induced by skyrmion-monpole textures in chiral magnets. (3) A novel transport phenomenon in Weyl semimetals with topological defects, which is referred to as torsional chiral magnetic effect.
|
Report
(6 results)
Research Products
(39 results)
-
-
-
-
[Journal Article] Colossal thermomagnetic response in the exotic superconductor URu2Si22015
Author(s)
T. Yamashita, Y. Shimoyama, Y. Haga, T.D. Matsuda, E. Yamamoto, Y. Onuki, H. Sumiyoshi, S. Fujimoto, A. Levchenko, T. Shibauchi, and Y. Matsuda
-
Journal Title
Nature Physics
Volume: 11
Issue: 1
Pages: 17-20
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
