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arXiv 2301.12979cond-mat.supr-con
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干涉诱导的表面超导性:通过调节德拜能量的增强

Interference-induced surface superconductivity:Enhancement by tuning the Debye energy

Yunfei Bai, Yajiang Chen, M. D. Croitoru, A. A. Shanenko, Xiaobing Luo, Yunbo Zhang

摘要:

在通常的看法中,表面超导性与II型超导体中高于上临界场的超导冷凝物的表面成核或与声子性质的重排和表面/界面附近的电子-声子耦合有关。最近,人们发现,还有另一个例子,当表面超导温度增加高达20-25%,与体相比较,由于超导对状态的建设性干涉。在目前的工作中,我们证明,事实上,这样的interferenceinduced增强可以更明显,高达近70%。此外,在这里,它表明,这种干涉增强持续在很宽的范围内的微观参数。

英文摘要:

In the usual perception, surface superconductivity is associated with the surface nucleation of a superconducting condensate above the upper critical field in type-II superconductors or with a rearrangement of phonon properties and the electron-phonon coupling near surfaces/interfaces. Recently, it has been found that there is another example when the surface superconducting temperature is increased up to 20-25% as compared to the bulk one due to constructive interference of superconducting pair states. In the present work, we demonstrate that in fact, such an interferenceinduced enhancement can be much more pronounced, up to nearly 70%. Furthermore, here it is shown that such an interference enhancement persists over a wide range of microscopic parameters.

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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