Suppression of Superconductivity by Twin Boundaries In FeSe

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Suppression of Superconductivity by Twin Boundaries In FeSe

Show simple item record Hoffman, Jenny Eve Song, Can-Li Wang, Yi-Lin Jiang, Ye-Ping Wang, Lili He, Ke Chen, Xi Ma, Xu-Cun Xue, Qi-Kun 2012-11-20T14:40:24Z 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.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 Hoffman, Jenny Eve 2012-11-20T14:40:24Z

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