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Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures

F. S. Bergeret·A. F. Volkov·K. B. Efetov
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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.

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F. S. Bergeret, A. F. Volkov, K. B. Efetov. 2005-07-14. Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures. https://doi.org/10.1103/revmodphys.77.1321

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