Andreev Reflection In Ferromagnet-Superconductor Junctions
凝聚态物理
2017-12-07 v2
摘要
The transport properties of a ferromagnet-superconductor (FS) junction are studied in a scattering formulation. Andreev reflection at the FS interface is strongly affected by the exchange interaction in the ferromagnet. The conductance G_FS of a ballistic point contact between F and S can be both larger or smaller than the value G_FN with the superconductor in the normal state, depending on the ratio of the exchange and Fermi energies. If the ferromagnet contains a tunnel barrier (I), the conductance G_FIFS exhibits resonances which do not vanish in linear response -- in contrast to the Tomasch oscillations for non-ferromagnetic materials.
引用
@article{arxiv.cond-mat/9410014,
title = {Andreev Reflection In Ferromagnet-Superconductor Junctions},
author = {M. J. M. de Jong and C. W. J. Beenakker},
journal= {arXiv preprint arXiv:cond-mat/9410014},
year = {2017}
}
备注
8 pages, RevTeX v3.0, including 3 encapsulated postscript figures; [2017: figures included in text]