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arXiv 2302.14802cond-mat.mes-hallcond-mat.supr-con
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N-I-PT对称非厄米超导结的电流-电压特性作为非厄米形式的探针

Current-voltage characteristics of the N-I-PT-symmetric non-Hermitian superconductor junction as a probe of non-Hermitian formalisms

Viktoriia Kornich

AI总结:

理论研究了N-I-PTS结,通过比较左右基和右右基的电流-电压特性,发现左右基中Andreev散射方向反常导致其不适用,而右右基中虚能量态随时间的增长与衰减达到平衡。

摘要:

我们从理论上研究了一个由正常金属、PT对称非厄米超导体及它们之间的绝缘薄层组成的结(N-I-PTS结)。我们使用左右基和右右基计算了该结的电流-电压特性并比较了结果。我们发现,在左右基中,Andreev散射粒子相对于右右基和常规Andreev散射沿相反方向运动。这导致电流-电压特性产生深刻差异。基于此及其他特征,我们认为左右基在此情况下不适用。值得注意的是,我们发现右右基中具有虚能量的态随时间的增长和衰减达到了平衡。

英文摘要:

We study theoretically a junction consisting of a normal metal, PT-symmetric non-Hermitian superconductor, and an insulating thin layer between them (N-I-PTS junction). We calculate current-voltage characteristics for this junction using left-right and right-right bases and compare the results. We find that in the left-right basis, the Andreev-scattered particles move in the opposite direction compared to the right-right basis and conventional Andreev scattering. This leads to profound differences in current-voltage characteristics. Based on this and other signatures, we argue that left-right basis is not applicable in this case. Remarkably, we find that the growth and decay with time of the states with imaginary energies in right-right basis are equilibrated.

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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