The Reverse Proximity Effect in Superconductor–Ferromagnetic Insulator Heterostructures

D. V. Seleznev; Селезнев Д. В.; V. O. Yagovtsev; Яговцев В. О.; N. G. Pugach; Пугач Н. Г.; Ya. V. Turkin; Туркин Я. В.; E. G. Ekomasov; Екомасов Е. Г.; B. G. L’vov; Львов Б. Г.

doi:10.31857/S0015323022601593

The Reverse Proximity Effect in Superconductor–Ferromagnetic Insulator Heterostructures

作者: Seleznev D.¹, Yagovtsev V.¹, Pugach N.¹, Turkin Y.¹^,2, Ekomasov E.³^,4, L’vov B.¹
隶属关系:
1. National Research University Higher School of Economics
2. Vernadsky Crimean Federal University
3. Ufa University of Science and Technology
4. Bashkir State Pedagogical University
期: 卷 124, 编号 2 (2023)
页面: 196-203
栏目: ЭЛЕКТРИЧЕСКИЕ И МАГНИТНЫЕ СВОЙСТВА
URL: https://journals.rcsi.science/0015-3230/article/view/139416
DOI: https://doi.org/10.31857/S0015323022601593
EDN: https://elibrary.ru/KYXYRR
ID: 139416

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详细

The magnetization induced in a superconductor due to the reverse proximity effect is studied in hybrid structures containing a superconductor and a ferromagnetic insulator. The study was carried out within the method of semiclassical Green’s functions, in which the Usadel equations are solved numerically with boundary conditions suitable for strongly spin-polarized ferromagnetic materials. The conversion of sin-glet superconducting correlations into triplet ones as a result of the proximity effect with a ferromagnet and its manifestation in the features of the electron density of states, induced magnetization, and suppression of the superconducting order parameter have been studied. It is shown that the magnetization can change sign inside the superconducting layer. The magnetization distribution is compared with the data obtained by the authors in previous works.

关键词

superconductivity, superconductor–ferromagnetic insulator, reverse proximity effect, induced magnetization, density of states

参考

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