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PhysRevB.104.L060504.pdf | 597.78 kB | Adobe PDF | 見る/開く |
タイトル: | Peak in the superconducting transition temperature of the nonmagnetic topological line-nodal material CaSb2 under pressure |
著者: | Kitagawa, Shunsaku https://orcid.org/0000-0002-1855-4760 (unconfirmed) Ishida, Kenji Ikeda, Atsutoshi https://orcid.org/0000-0002-9345-2967 (unconfirmed) Kawaguchi, Mayo Yonezawa, Shingo https://orcid.org/0000-0002-7476-3604 (unconfirmed) Maeno, Yoshiteru |
著者名の別形: | 北川, 俊作 石田, 憲二 池田, 敦俊 川口, 真世 米澤, 進吾 前野, 悦輝 |
キーワード: | Superconductivity Superconductors Topological materials AC susceptibility measurements Band structure methods Pressure effects Resistivity measurements Condensed Matter, Materials & Applied Physics |
発行日: | Aug-2021 |
出版者: | American Physical Society (APS) |
誌名: | Physical Review B |
巻: | 104 |
号: | 6 |
論文番号: | L060504 |
抄録: | Investigating the pressure dependence of the superconducting (SC) transition temperature T-c is crucial for understanding the SC mechanism. Herein, we report on the pressure dependence of T-c in the nonmagnetic topological line-nodal material CaSb₂ based on measurements of electric resistance and alternating current magnetic susceptibility. T-c initially increases with increasing pressure and peaks at similar to 3.1 GPa. With a further increase in pressure, T-c decreases and finally becomes undetectable at 5.9 GPa. Because no signs of phase transition or Lifshitz transition are observed in the normal state, the peculiar peak structure of T-c suggests that CaSb₂ has an unconventional SC character. |
著作権等: | © 2021 American Physical Society |
URI: | http://hdl.handle.net/2433/268049 |
DOI(出版社版): | 10.1103/PhysRevB.104.L060504 |
出現コレクション: | 学術雑誌掲載論文等 |
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