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Proceedings Paper

Magnetoanisotropic Andreev reflection in ferromagnet/superconductor junctions (Conference Presentation)
Author(s): Petra Hoegl; Alex Matos-Abiague; Igor Zutic; Jaroslav Fabian

Paper Abstract

Andreev reflection spectroscopy of ferromagnet/superconductor (F/S) junctions is a sensitive probe of the junction interface as well as the spin polarization. We theoretically investigate spin-polarized transport in F/S 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. This suggests a similar control of the superconducting proximity effect and Majorana states. 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 F/S junction. This work has been supported by DFG SFB 689, the International Doctorate Program Topological Insulators of the Elite Network of Bavaria, DOE-BES Grant DE-SC0004890, and ONR N000141310754. P. H\"{o}gl, A. Matos-Abiague, Igor \v{Z}uti\'c, J. Fabian, Phys. Rev. Lett. 115, 116601 (2015)

Paper Details

Date Published: 4 November 2016
PDF: 1 pages
Proc. SPIE 9931, Spintronics IX, 99313W (4 November 2016); doi: 10.1117/12.2236831
Show Author Affiliations
Petra Hoegl, Univ. Regensburg (Germany)
Alex Matos-Abiague, Univ. at Buffalo (United States)
Igor Zutic, Univ. at Buffalo (United States)
Jaroslav Fabian, Univ. Regensburg (Germany)

Published in SPIE Proceedings Vol. 9931:
Spintronics IX
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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