| Autor: |
Sei, Ryosuke, Kawasoko, Hideyuki, Matsumoto, Kota, Arimitsu, Masato, Terakado, Kyohei, Oka, Daichi, Fukuda, Shintaro, Kimura, Noriaki, Kasai, Hidetaka, Nishibori, Eiji, Ohoyama, Kenji, Hoshikawa, Akinori, Ishigaki, Toru, Hasegawa, Tetsuya, Fukumura, Tomoteru |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Dalton Trans. 49, 3321-3325 (2020) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1039/C9DT04640B |
| Popis: |
We report a series of layered superconductors, anti-ThCr$_2$Si$_2$-type $RE_2$O$_2$Bi ($RE$ = rare earth), composed of electrically conductive Bi square nets and magnetic insulating $RE_2$O$_2$ layers. The superconductivity was induced by separating Bi square nets as a result of excess oxygen incorporation, irrespective of the presence of magnetic ordering in $RE_2$O$_2$ layers. Intriguingly, the transition temperature of all $RE_2$O$_2$Bi including nonmagnetic Y$_2$O$_2$Bi was approximately scaled by the unit cell tetragonality ($c$/$a$), implying a key role of relative separation of the Bi square nets to induce the superconductivity. |
| Databáze: |
arXiv |
| Externí odkaz: |
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