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Updated: May 9, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Magnetic control of spin-orbit fields: a first-principles study of Fe/GaAs junctions
Martin Gmitra1, Alex Matos-Abiague, Claudia Draxl
1Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany.
Abstract:
The microscopic structure of spin-orbit fields for the technologically important Fe/GaAs interface is uncovered from first principles. A symmetry based method allows us to obtain the spin-orbit fields-both their magnitude and orientation-for a generic Bloch state, from the electronic band structure for any in-plane magnetization orientation. It is demonstrated that the spin-orbit fields depend not only on the electric field across the interface, but also surprisingly strongly on the Fe magnetization orientation, opening prospects for their magnetic control. These results give important clues in searching for spin-orbit transport and optical phenomena in ferromagnet/nonmagnet heterostructures.
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