SIS型层状超导结构中的电流-相关系

IF 0.9 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Condensed Matter Physics Pub Date : 2021-06-25 DOI:10.5488/CMP.24.23701

A. Shutovskyi, V. Sakhnyuk

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引用次数: 0

摘要

研究了层状超导结构中电流密度与相位差的关系。为了简化计算，导出了格林函数在t表示下的准经典方程。序参数被认为是一个分段常数函数。考虑到一般情况，对介电层的透明度和中间层的厚度不加限制。我们发现，电流相关系的一个新的解析表达式可以用来得到一些在特定情况下产生的已知结果。

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Current-phase relation in layered superconducting structures of SIS’IS type

The dependence of the current density on the phase difference is investigated considering the layered superconducting structures of a SIS’IS type. To simplify the calculations, the quasiclassical equations for the Green’s functions in a t-representation are derived. An order parameter is considered as a piecewise constant function. To consider the general case, no restrictions on the dielectric layer transparency and the thickness of the intermediate layer are imposed. It was found that a new analytical expression for the current-phase relation can be used with the aim to obtain a number of previously known results arising in particular cases.

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来源期刊

Condensed Matter Physics 物理-物理：凝聚态物理

CiteScore

1.10

自引率

16.70%

发文量

审稿时长

1 months

期刊介绍： Condensed Matter Physics contains original and review articles in the field of statistical mechanics and thermodynamics of equilibrium and nonequilibrium processes, relativistic mechanics of interacting particle systems.The main attention is paid to physics of solid, liquid and amorphous systems, phase equilibria and phase transitions, thermal, structural, electric, magnetic and optical properties of condensed matter. Condensed Matter Physics is published quarterly.