Suppression of Superconductivity by Twin Boundaries in FeSe
文献类型：期刊论文
| 作者 | Song, CL ; Wang, YL ; Jiang, YP ; Wang, LL ; He, K ; Chen, X ; Hoffman, JE ; Ma, XC ; Xue, QK |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2012 |
| 卷号 | 109期号:13 |
| 关键词 | STATES |
| ISSN号 | 0031-9007 |
| 通讯作者 | Song, CL (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Surface Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Low-temperature scanning tunneling microscopy and spectroscopy are employed to investigate twin boundaries in stoichiometric FeSe films grown by molecular beam epitaxy. Twin boundaries can be unambiguously identified by imaging the 90 degrees change in the orientation of local electronic dimers from Fe site impurities on either side. Twin boundaries run at approximately 45 degrees to the Fe-Fe bond directions, and noticeably suppress the superconducting gap, in contrast with the recent experimental and theoretical findings in other iron pnictides. Furthermore, vortices appear to accumulate on twin boundaries, consistent with the degraded superconductivity there. The variation in superconductivity is likely caused by the increased Se height in the vicinity of twin boundaries, providing the first local evidence for the importance of this height to the mechanism of superconductivity. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation; Ministry of Science and Technology of China; Harvard University |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54142]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Song, CL,Wang, YL,Jiang, YP,et al. Suppression of Superconductivity by Twin Boundaries in FeSe[J]. PHYSICAL REVIEW LETTERS,2012,109(13). |
| APA | Song, CL.,Wang, YL.,Jiang, YP.,Wang, LL.,He, K.,...&Xue, QK.(2012).Suppression of Superconductivity by Twin Boundaries in FeSe.PHYSICAL REVIEW LETTERS,109(13). |
| MLA | Song, CL,et al."Suppression of Superconductivity by Twin Boundaries in FeSe".PHYSICAL REVIEW LETTERS 109.13(2012). |
入库方式： OAI收割
来源：物理研究所
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