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Inhomogeneous magnetism induced in a superconductor at superconductor-ferromagnet interface

V. N. Krivoruchko·E. A. Koshina
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Abstract

We study a magnetic proximity effect at superconductor (S) - ferromagnet (F) interface. It is shown that due to an exchange of electrons between the F and S metals ferromagnetic correlations extend into the superconductor, being dependent on interface parameters. We show that ferromagnetic exchange field pair breaking effect leads to a formation of subgap bands in the S layer local density of states, that accommodate only one spin-polarized quasiparticles. Equilibrium magnetization leakage into the S layer as function of SF interface quality and a value of ferromagnetic interaction have also been calculated. We show that a damped-oscillatory behavior versus distance from SF interface is a distinguished feature of the exchange-induced magnetization of the S layer.

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V. N. Krivoruchko, E. A. Koshina. 2002-01-30. Inhomogeneous magnetism induced in a superconductor at superconductor-ferromagnet interface. https://doi.org/10.1103/physrevb.66.014521

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