Magnetic-field-induced charge current in quantum wells with spin-orbit coupling

We calculated the charge current response in a two-dimensional electron gas

in the presence of Rashba spinorbit coupling and electronimpurity

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 spinorbit coupling. The dependence of the induced current on

the Rashba spinorbit 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.