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セガワ コウジ
SEGAWA KOJI
瀬川 耕司 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2013/10 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Unusual nature of fully gapped superconductivity in In-doped SnTe |
| 執筆形態 | その他 |
| 掲載誌名 | PHYSICAL REVIEW B |
| 掲載区分 | 国外 |
| 出版社・発行元 | AMER PHYSICAL SOC |
| 巻・号・頁 | 88(14) |
| 著者・共著者 | Mario Novak,Satoshi Sasaki,Markus Kriener,Kouji Segawa,Yoichi Ando |
| 概要 | The superconductor Sn1-xInxTe is a doped topological crystalline insulator and has become important as a candidate topological superconductor, but its superconducting phase diagram is poorly understood. By measuring about 50 samples of high-quality, vapor-grown single crystals, we found that the dependence of the superconducting transition temperature T-c on the In content x presents a qualitative change across the critical doping x(c) similar or equal to 3.8%, at which a structural phase transition takes place. Intriguingly, in the ferroelectric rhombohedral phase below the critical doping, T-c is found to be strongly enhanced with impurity scattering. It appears that the nature of electron pairing changes across x(c) in Sn1-xInxTe. |
| DOI | 10.1103/PhysRevB.88.140502 |
| ISSN | 1098-0121 |
| PermalinkURL | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84885395707&origin=inward |