Non-local spin-sensitive electron transport in diffusive proximity heterostructures

Details Non-local spin-sensitive electron transport in diffusive proximity heterostructures Non-local spin-sensitive electron transport in diffusive proximity heterostructures

2010-05-19

arxiv.org/abs/1005.3426v1

Phys. Rev. B 82, 024522 (2010)

Physics

Condensed Matter

Superconductivity

8 pages, 4 figures

Scientific paper

10.1103/PhysRevB.82.024522

We formulate a quantitative theory of non-local electron transport in three-terminal disordered ferromagnet-superconductor-ferromagnet structures. We demonstrate that magnetic effects have different implications: While strong exchange field suppresses disorder-induced electron interference in ferromagnetic electrodes, spin-sensitive electron scattering at superconductor-ferromagnet interfaces can drive the total non-local conductance negative at sufficiently low energies. At higher energies magnetic effects become less important and the non-local resistance behaves similarly to the non-magnetic case. Our predictions can be directly tested in future experiments on non-local electron transport in hybrid FSF structures.

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