2005/06/30 by F. S. Bergeret, A. F. Volkov, K. B. Efetov · 1 citation
Physics and Astronomy · #cond-mat.supr-con
paper · pdf · doi:10.1103/revmodphys.77.1321
published as Rev. Mod. Phys. 77, 1321 (2005). · revised version to be published in Rev. Mod. Phys
arxiv created 2005/07/14 · arxiv updated 2009/12/01
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.