title: Magnetoanisotropic Andreev reflection in ferromagnet-superconductor junctions.
abstract: Andreev reflection spectroscopy of ferromagnet-superconductor (FS) junctions [corrected] 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 a FS junction.
authors.affiliation: Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany.
authors.forename: Petra
authors.initials: P
authors.lastname: Högl
authors.affiliation: Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany.|Department of Physics, University at Buffalo, State University of New York, Buffalo, New York 14260, USA.
authors.forename: Alex
authors.initials: A
authors.lastname: Matos-Abiague
authors.affiliation: Department of Physics, University at Buffalo, State University of New York, Buffalo, New York 14260, USA.
authors.forename: Igor
authors.initials: I
authors.lastname: Žutić
authors.affiliation: Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany.
authors.forename: Jaroslav
authors.initials: J
authors.lastname: Fabian