Inhomogeneous magnetism induced in a superconductor at superconductor-ferromagnet interface

نویسنده

  • V. N. Krivoruchko
چکیده

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 accomodate 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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تاریخ انتشار 2002