超导对电位的方形阱模型

IF 1.1 3区物理与天体物理 Q4 PHYSICS, APPLIED

Journal of Low Temperature Physics Pub Date : 2024-06-14 DOI:10.1007/s10909-024-03169-z

Erkki Thuneberg

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引用次数: 0

摘要

我们研究了一维方井对势中的安德烈耶夫反射。我们讨论了模型的历史。电流-相位关系是松原频率的总和。我们通过分析延续发现了电流是如何从束缚水平和连续水平产生的。我们讨论了方井势能的两种极限情况，即零长井和无限井。该模型在某些情况下是定量有效的，但它构成了理解非均相超导和超流体中广泛问题的基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Square-well Model for Superconducting Pair Potential

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Square-well Model for Superconducting Pair Potential

We study Andreev reflection in a one-dimensional square-well pair potential. We discuss the history of the model. The current-phase relation is presented as a sum over Matsubara frequencies. How the current arises from bound and continuum levels is found by analytic continuation. We discuss two limiting cases of the square-well potential, the zero-length well and the infinite well. The model is quantitatively valid in some cases but forms the basis for understanding a wide range of problems in inhomogeneous superconductivity and superfluidity.

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来源期刊

Journal of Low Temperature Physics 物理-物理：凝聚态物理

CiteScore

3.30

自引率

25.00%

发文量

245

审稿时长

1 months

期刊介绍： The Journal of Low Temperature Physics publishes original papers and review articles on all areas of low temperature physics and cryogenics, including theoretical and experimental contributions. Subject areas include: Quantum solids, liquids and gases; Superfluidity; Superconductivity; Condensed matter physics; Experimental techniques; The Journal encourages the submission of Rapid Communications and Special Issues.