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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 |
| 形態種別 | 研究論文（国際会議プロシーディングス） |
| 標題 | Experimental studies of the topological superconductor CuxBi2Se3 |
| 執筆形態 | その他 |
| 掲載誌名 | 10TH INTERNATIONAL CONFERENCE ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY (M2S-X) |
| 出版社・発行元 | IOP PUBLISHING LTD |
| 巻・号・頁 | 449 |
| 著者・共著者 | Yoichi Ando,Kouji Segawa,Satoshi Sasaki,M. Kriener |
| 概要 | CuxBi2Se3 was recently elucidated to be the first example of a time-reversal-invariant topological superconductor characterized by the gapless surface quasiparticle states consisting of helical Majorana fermions. The evidence for topological superconductivity in CuxBi2Se3 was obtained by the point-contact spectroscopy that indirectly detected the itinerant massless Majorana state on the surface. In this paper, we show new point-contact spectroscopy data which supplement the previous conclusion. We also present the anisotropic normal-state resistivity data for superconducting samples of CuxBi2Se3 which strongly suggest that not only the effective mass but also the scattering rate is anisotropic in this material by a factor of similar to 3. |
| DOI | 10.1088/1742-6596/449/1/012033 |
| ISSN | 1742-6588 |
| PermalinkURL | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84883037821&origin=inward |