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arXiv 1602.06240cond-mat.supr-con
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绝缘层(Li $_{0.84}$ Fe PDMATHAAB)OH在(Li $_{0.84}$ Fe $_{0.16}$)OHFe $_{0.98}$ Se中的邻近感生超导电性

Proximity induced superconductivity within the insulating (Li$_{0.84}$Fe$_{0.16}$)OH layers in (Li$_{0.84}$Fe$_{0.16}$)OHFe$_{0.98}$Se

Rustem Khasanov, Huaxue Zhou, Alex Amato, Zurab Guguchia, Elvezio Morenzoni, Xiaoli Dong, Guangming Zhang, Zhongxian Zhao

摘要:

用μ子自旋转动方法研究了绝缘中间体(Li $_{0.84}$ Fe $_{0.16}$)OH层对(Li $_{0.84}$ Fe $_{0.16}$)OHFe $_{0.98}$ Se磁性和超导性质的影响.结果表明,在低于$\simeq 10$ K的温度下,它不仅增强了FeSe层间的耦合,而且由于靠近FeSe层,它本身也成为超导体。在(Li $_{0.84}$ Fe $_{0.16}$)OH层中的超导电性最可能是类超导的,并且能隙值取决于序参量对称性,不超过1-1.5 meV。

英文摘要:

The role played by the insulating intermediate (Li$_{0.84}$Fe$_{0.16}$)OH layer on magnetic and superconducting properties of (Li$_{0.84}$Fe$_{0.16}$)OHFe$_{0.98}$Se was studied by means of muon-spin rotation. It was found that it is not only enhances the coupling between the FeSe layers for temperatures below $\simeq 10$ K, but becomes superconducting by itself due to the proximity to the FeSe ones. Superconductivity in (Li$_{0.84}$Fe$_{0.16}$)OH layers is most probably filamentary-like and the energy gap value, depending on the order parameter symmetry, does not exceed 1-1.5 meV.

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