Magnetic-field-induced charge current in quantum wells with spin-orbit coupling
We calculated the charge current response in a two-dimensional electron gasin the presence of Rashba spinorbit coupling and electronimpurityscattering, under an in-plane time-dependent applied magnetic field. Ourformalism rests on the density matrix method and quantum transportequation. It was shown that there exists a magnetic-field-induced chargetransport due to the photon-excited electrons scattered by impurities in thepresence of spinorbit coupling. The dependence of the induced current onthe Rashba spinorbit coupling strength is obtained at high frequencies of themagnetic field. Our result provides a potentially useful method to produceand manipulate charge current by using the magnetic field alone insemiconductor spintronic systems.