Magnetoanisotropic Andreev Reflection in Ferromagnet/Superconductor Junctions

Autor:	Högl, Petra, Matos-Abiague, Alex, Žutić, Igor, Fabian, Jaroslav
Rok vydání:	2015
Předmět:	Condensed Matter - Superconductivity Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Lett. 115, 116601 (2015)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.115.116601
Popis:	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. Comment: Pages 6-10 contain supplemental material
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1502.08022 Zobrazit plný text záznamu View this record from Arxiv