Magnetoanisotropic Andreev Reflection in Ferromagnet/Superconductor Junctions
Abstract
Andreev reflection spectroscopy of ferromagnet/superconductor (FS) junctions is an important probe of spin polarization. We theoretically investigate spin-polarized transport in FS junctions in the presence of Rashba and Dresselhaus interfacial spin-orbit fields and show that Andreev reflection can be controlled by changing the magnetization orientation. We predict a giant in- and out-of-plane magnetoanisotropy of the junction conductance. If the ferromagnet is highly spin polarized---in the half-metal limit---the magnetoanisotropic Andreev reflection depends universally on the spin-orbit fields only. Our results show that Andreev reflection spectroscopy can be used for sensitive probing of interfacial spin-orbit fields in FS junction.
Cite
@article{arxiv.1502.08022,
title = {Magnetoanisotropic Andreev Reflection in Ferromagnet/Superconductor Junctions},
author = {Petra Högl and Alex Matos-Abiague and Igor Žutić and Jaroslav Fabian},
journal= {arXiv preprint arXiv:1502.08022},
year = {2015}
}
Comments
Pages 6-10 contain supplemental material