Suppression of Superconductivity by Twin Boundaries in FeSe

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Suppression of Superconductivity by Twin Boundaries in FeSe
	Song, CL ; Wang, YL ; Jiang, YP ; Wang, LL ; He, K ; Chen, X ; Hoffman, JE ; Ma, XC ; Xue, QK
刊名	PHYSICAL REVIEW LETTERS
	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
内容类型	期刊论文
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).