Regensburg 2019 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 26: Spin dynamics and transport
MA 26.1: Vortrag
Mittwoch, 3. April 2019, 09:30–09:45, H37
Electric-field control of interfacial spin-orbit fields — •Lin Chen1, Martin Gmitra2, Michael Vogel1, Robert Islinger1, Matthias Kronseder1, Dieter Schuh1, Dominique Bougeard1, Jaroslav Fabian2, Dieter Weiss1, and Christian Back3 — 1Institute of Experimental and Applied Physics, University of Regensburg, Germany — 2Institute of Theoretical Physics, University of Regensburg, Germany — 3Department of Physics, Technical University Munich, Germany
Electric-field control of current-induced spin-orbit magnetic fields provides a route towards the low-power spin-orbit torque devices. Here, we show that the current-induced spin-orbit magnetic fields at the Fe/GaAs (001) interface [1] can be controlled with an electric field. In particular, by applying a gate-voltage across the Fe/GaAs interface, the interfacial spin-orbit field-vector acting on Fe can be robustly modulated via the change of the magnitude of the interfacial spin-orbit interaction [2]. Our results illustrate that the electric-field in a Schottky barrier is capable of modifying spin-orbit magnetic fields, an effect that could be used to develop spin-orbit torque devices with low-power consumption. [1] L. Chen et al., Nature Commu. 7, 13802 (2016). [2] L. Chen et al., Nature Elect. 1, 350-355 (2018).