超导体/同质铁磁体异质结构中的临界温度和有序参数

IF 1.1 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING Physics of Metals and Metallography Pub Date : 2024-05-27 DOI:10.1134/s0031918x23602913

V. A. Tumanov, Yu. N. Proshin

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引用次数: 0

摘要

摘要提出了一种求解线性化乌萨德尔方程自洽边界值问题的方法。该方法可以找到超导阶次参数和临界温度作为问题参数函数的样本归一化分布，并解决相对复杂的空间不均匀问题，例如包含不均匀磁层的超导异质结构。在这种方法中，考虑了包含超导层和畴裂铁磁层的层状结构。理论与实验对 Fe 20 Å/V 340 Å/Fe 8 Å/Cr/Fe 8 Å 系统进行了比较。

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Critical Temperature and Order Parameter in Superconductor/Inhomogeneous Ferromagnet Heterostructures

Abstract

A method for solving a self-consistent boundary value problem for the linearized Usadel equation is proposed. The method makes it possible to find the sample-normalized distribution of the superconducting order parameter and the critical temperature as functions of the problem parameters and to solve relatively complex spatially inhomogeneous problems, e.g., superconducting heterostructures containing inhomogeneous magnetic layers. Within this approach, layered structures containing superconducting and domain-split ferromagnetic layers are considered. The theory is compared with experiment for the Fe 20 Å/V 340 Å/Fe 8 Å/Cr/Fe 8 Å system.

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来源期刊

Physics of Metals and Metallography 工程技术-冶金工程

CiteScore

2.00

自引率

25.00%

发文量

108

审稿时长

3 months

期刊介绍： The Physics of Metals and Metallography (Fizika metallov i metallovedenie) was founded in 1955 by the USSR Academy of Sciences. Its scientific profile involves the theory of metals and metal alloys, their electrical and magnetic properties, as well as their structure, phase transformations, and principal mechanical properties. The journal also publishes scientific reviews and papers written by experts involved in fundamental, application, and technological studies. The annual volume of publications amounts to some 250 papers submitted from 100 leading national scientific institutions.