2023 Fiscal Year Annual Research Report
| Project/Area Number |
22KJ0958
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| Allocation Type | Multi-year Fund |
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| Research Institution | Keio University |
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Principal Investigator |
WANG TIANCHUN 慶應義塾大学, 理工学研究科(矢上), 特任助教
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| Project Period (FY) |
2023-03-08 – 2024-03-31
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| Keywords | superconductivity / first-principles / hydrides |
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| 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.
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