Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
Abstract
We consider novel unusual effects in superconductor-ferromagnet (S/F) structures. In particular we analyze the triplet component (TC) of the condensate generated in those systems.This component is odd in frequency and even in the momentum, which makes it insensitive to non-magnetic impurities. If the exchange field is not homogeneous in the system the triplet component is not destroyed even by a strong exchange field and can penetrate the ferromagnet over long distances. Some other effects considered here and caused by the proximity effect are: enhancement of the Josephson current due to the presence of the ferromagnet, induction of a magnetic moment in superconductors resulting in a screening of the magnetic moment, formation of periodic magnetic structures due to the influence of the superconductor, etc. We compare the theoretical predictions with existing experiments.
Keywords
Cite
@article{arxiv.cond-mat/0506047,
title = {Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures},
author = {F. S. Bergeret and A. F. Volkov and K. B. Efetov},
journal= {arXiv preprint arXiv:cond-mat/0506047},
year = {2009}
}
Comments
revised version to be published in Rev. Mod. Phys