Andreev conductance of a domain wall

Details Andreev conductance of a domain wall Andreev conductance of a domain wall

2003-03-02

arxiv.org/abs/cond-mat/0303014v1

Phys. Rev. B 68, 140501(R) (2003)

Physics

Condensed Matter

Superconductivity

4 pages and 1 figure

Scientific paper

10.1103/PhysRevB.68.140501

At low temperatures, the transport through a superconductor-ferromagnet tunnel interface is due to tunneling of electrons in pairs. Exchange field of a monodomain ferromagnet aligns electron spins and suppresses the two electron tunneling. The presence of the domain walls at the SF interface strongly enhances the subgap current. The Andreev conductance is proven to be proportional to the total length of domain walls at the SF interface.

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