Suppression of Superconductivity by Twin Boundaries In FeSe

Suppression of Superconductivity by Twin Boundaries In FeSe

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Suppression of Superconductivity by Twin Boundaries In FeSe

dc.contributor.author	Hoffman, Jenny Eve
dc.contributor.author	Song, Can-Li
dc.contributor.author	Wang, Yi-Lin
dc.contributor.author	Jiang, Ye-Ping
dc.contributor.author	Wang, Lili
dc.contributor.author	He, Ke
dc.contributor.author	Chen, Xi
dc.contributor.author	Ma, Xu-Cun
dc.contributor.author	Xue, Qi-Kun
dc.date.accessioned	2012-11-20T14:40:24Z
dc.date.issued	2012
dc.identifier.citation	Song, Can-Li, Yi-Lin Wang, Ye-Ping Jiang, Lili Wang, Ke He, Xi Chen, Jennifer E. Hoffman, Xu-Cun Ma, and Qi-Kun Xue. 2012. Suppression of superconductivity by twin boundaries in FeSe. Physical Review Letters 109(13): 137004.	en_US
dc.identifier.issn	0031-9007	en_US
dc.identifier.uri	http://nrs.harvard.edu/urn-3:HUL.InstRepos:9925388
dc.description.abstract	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 90º change in the orientation of local electronic dimers from Fe site impurities on either side. Twin boundaries run at approximately 45º 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.	en_US
dc.description.sponsorship	Physics	en_US
dc.language.iso	en_US	en_US
dc.publisher	American Physical Society	en_US
dc.relation.isversionof	doi:10.1103/PhysRevLett.109.137004	en_US
dash.license	LAA
dc.title	Suppression of Superconductivity by Twin Boundaries In FeSe	en_US
dc.type	Journal Article	en_US
dc.description.version	Version of Record	en_US
dc.relation.journal	Physical Review Letters	en_US
dash.depositing.author	Hoffman, Jenny Eve
dc.date.available	2012-11-20T14:40:24Z