摘要
FeTe1-xSexis a family of iron-based superconductors with a well-known critical temperature (T c) of 14.5 K for x = 0.45. Also well-established is the presence of topological surface states of FeTe0.55Se0.45in which topological superconductivity sets in. By using density functional calculations and the Bardeen-Cooper-Schrieffer (BCS) theory for traditional superconductors we calculated the T cof the surface layers of FeTe0.5Se0.5with the exchange interaction as the source of attractive force to form the Cooper pairs. The estimated T cis in reasonable agreement with the experimental value and suggests that the exchange interaction is behind the topological superconductivity on the surface of FeTe0.55Se0.45
原文 | 英語 |
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文章編號 | 083065 |
期刊 | New Journal of Physics |
卷 | 22 |
發行號 | 8 |
DOIs | |
出版狀態 | 已出版 - 08 2020 |
對外發佈 | 是 |
文獻附註
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