English

Inhomogeneous magnetism induced in a superconductor at superconductor-ferromagnet interface

Superconductivity 2009-11-07 v2

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.

Keywords

Cite

@article{arxiv.cond-mat/0201534,
  title  = {Inhomogeneous magnetism induced in a superconductor at superconductor-ferromagnet interface},
  author = {V. N. Krivoruchko and E. A. Koshina},
  journal= {arXiv preprint arXiv:cond-mat/0201534},
  year   = {2009}
}

Comments

10 pages, 7 Postscript figures