Regensburg 2010 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 24: Spinelectronics / Spin Injection in Heterostructures
MA 24.1: Vortrag
Donnerstag, 25. März 2010, 10:15–10:30, H22
Spin-orbit coupling fields in Fe/GaAs junctions — •Martin Gmitra1, Alex Matos-Abiague1, Claudia Ambrosch-Draxl2, and Jaroslav Fabian1 — 1Univesity of Regensburg, 93040 Regensburg, Germany — 2University of Leoben, 8700 Leoben, Austria
The existence of the spin-orbit fields induced by the interface structure in Fe/GaAs junctions is proven from first-principles calculations. While the underlying symmetry of the fields follows that of the interface, the specific realization of the symmetry depends on the electron momentum and energy. The calculated atomic-layer-resolved expectation values of the Bloch states' spins show that the spin-orbit fields peak at the GaAs side of the interface. The employed technique is applicable to ferromagnetic junctions in general. This work has been supported by SFB 689.