Proximity effect-assisted absorption of spin currents in superconductors

Morten, Jan Petter; Brataas, Arne; Bauer, Gerrit E. W.; Belzig, Wolfgang; Tserkovnyak, Yaroslav

Proximity effect-assisted absorption of spin currents in superconductors

Authors

Tserkovnyak, Yaroslav

Description

The injection of pure spin current into superconductors by the dynamics of a ferromagnetic contact is studied theoretically. Taking into account suppression of the order parameter at the interfaces (inverse proximity effect) and the energy-dependence of spin-flip scattering, we determine the temperature-dependent ferromagnetic resonance linewidth broadening. Our results agree with recent experiments in Nb|permalloy bilayers [C. Bell et al., arXiv:cond-mat/0702461].
4 pages