| Project/Area Number |
22KJ0958
|
|---|
| Project/Area Number (Other) |
22J14746 (2022)
|
|---|
| Research Category |
Grant-in-Aid for JSPS Fellows
|
| Allocation Type | Multi-year Fund (2023)
Single-year Grants (2022) |
|---|
| Section | 国内 |
|---|
| Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
|
|---|
| Research Institution | Keio University (2023)
The University of Tokyo (2022) |
|---|
Principal Investigator |
WANG TIANCHUN 慶應義塾大学, 理工学研究科(矢上), 特任助教
|
|---|
| Project Period (FY) |
2023-03-08 – 2024-03-31
|
| Project Status |
Completed (Fiscal Year 2023)
|
| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2023: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2022: ¥900,000 (Direct Cost: ¥900,000)
|
|---|
| Keywords | superconductivity / first-principles / hydrides / ab initio calculation / hydride superconductor / electron-phonon coupling |
|---|
| Outline of Research at the Start |
This first-principles method can be used widely in superconductors. With the only input of crystal structures, we can predict many properties of it. Combined with structure prediction method and optimization method, efficient scheme to search for novel superconductors can be realized.
|
| Outline of Annual Research Achievements |
In 2022, we have improved our theoretical methods of ab initio calculation of Tc. We combined our methods with structure prediction methods, and proposed a systematical routine to find optimal elements for lanthanum hydrides. We have successfully predicted that by doping calcium we can increase the transition temperature for lanthanum hydride to reach room-temperature with lower pressure.
In 2023, we have studied the effect of self-consistency in the calculation of electronic self-energy. We have found that the inclusion of self-consistency in self-energy is crucial in our Migdal-Eliashberg calculations. Moreover, using our methods, we have successfully reproduced the experimental Tc value of MgB2.
|
