2016 Fiscal Year Final Research Report
Anisotropic superconducting gap with robustness against the intrinsic disorder
| Project/Area Number |
26800183
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
Kase Naoki 新潟大学, 自然科学系, 助教 (10613630)
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Keywords | 超伝導 / 比熱 / 極低温 |
|---|
| Outline of Final Research Achievements |
We investigated anisotropic superconducting gap with robustness against intrinsic disorder. Specific heat measurements suggest that Y5Ir6Sn18 has anisotropic superconducting gap. Specific heat in rotating magnetic field shows clear four-fold symmetry in Y5Ir6Sn18, suggesting anisotropic superconducting gap. muSR measurements indicate that time-reversal symmetry is broken in R5Rh6Sn18 (R = Sc, Y, Lu). We find seven new superconductors, SrPd2Sb2 etc. We have succeeded in performing specific heat measurements of BiCh2-based superconductors with single crystal of less than 1 mg, and revealed superconducting gaps symmetry from specific heat measurements. Thermal conductivity measurements shows existence of minor superconducting gap of Ca3Rh4Sn13, suggesting that superconducting gap is multiband.
|
| Free Research Field |
強相関電子系
|
