Pin Lyu and Chao Zhang 2007 Nanotechnology 18 475403 doi:10.1088/0957-4484/18/47/475403
Pin Lyu1,2 and Chao Zhang2
Show affiliationsWe calculated the charge current response in a two-dimensional electron gas in the presence of Rashba spin–orbit coupling and electron–impurity scattering, under an in-plane time-dependent applied magnetic field. Our formalism rests on the density matrix method and quantum transport equation. It was shown that there exists a magnetic-field-induced charge transport due to the photon-excited electrons scattered by impurities in the presence of spin–orbit coupling. The dependence of the induced current on the Rashba spin–orbit coupling strength is obtained at high frequencies of the magnetic field. Our result provides a potentially useful method to produce and manipulate charge current by using the magnetic field alone in semiconductor spintronic systems.
71.70.Ej Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect
Condensed matter: electrical, magnetic and optical
Issue 47 (28 November 2007)
Received 30 August 2007, in final form 7 October 2007
Published 26 October 2007
Pin Lyu and Chao Zhang 2007 Nanotechnology 18 475403
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