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arXiv 0812.1068cond-mat.supr-con
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多带超导体通过正常/超导体/超导体结的带隙束缚态和隧穿电导

In-gap bound states and tunneling conductance of multiband superconductors through a normal/superconductor/superconductor junction

Xiao-Yong Feng, Tai-Kai Ng

摘要:

本文研究了金属与多带s波超导体之间夹有一薄层单带s波超导体时的隧穿电导。结果表明,当多带超导体的超导序参量的相位受挫时,由于在单带和多带超导体结之间形成了带内束缚态,电导曲线上出现了带内峰.讨论了这一结果在确定铁基超导体能隙对称性中的意义。

英文摘要:

The tunneling conductance between a metal and a multiband s-wave superconductor with a thin layer of single-band s-wave superconductor sandwiched in between is examined in this paper. We show that an in-gap peak in conductance curve is found as a result of the formation of in-gap bound state between the single-band and multiband superconductor junctions if the phases of the superconducting order parameters of the multiband superconductor are frustrated. The implication of this result in determining the gap symmetry of the iron-based superconductors is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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