Article abstract


Nature Physics 2, 195 - 199 (2006)
doi:10.1038/nphys238

Subject Categories: Condensed-matter physics | Electronics, photonics and device physics

Electric-dipole-induced spin resonance in disordered semiconductors

Mathias Duckheim and Daniel Loss


One of the hallmarks of spintronics is the control of magnetic moments by electric fields enabled by strong spin–orbit interaction (SOI) in semiconductors. A powerful way of manipulating spins in such structures is electric-dipole-induced spin resonance (EDSR), where the radio-frequency fields driving the spins are electric, not magnetic as in standard paramagnetic resonance. Here, we present a theoretical study of EDSR for a two-dimensional electron gas in the presence of disorder, where random impurities not only determine the electric resistance but also the spin dynamics through SOI. Considering a specific geometry with the electric and magnetic fields parallel and in-plane, we show that the magnetization develops an out-of-plane component at resonance that survives the presence of disorder. We also discuss the spin Hall current generated by EDSR. These results are derived in a diagrammatic approach, with the dominant effects coming from the spin vertex correction, and the optimal parameter regime for observation is identified.

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  1. Department of Physics and Astronomy, University of Basel, CH-4056 Basel, Switzerland

Correspondence to: Mathias Duckheim e-mail: mathias.duckheim@unibas.ch

Correspondence to: Daniel Loss e-mail: daniel.loss@unibas.ch

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