Spin–orbit coupling induced magnetoresistance oscillation in a dc biased two-dimensional electron system.
We study dc-current effects on the magnetoresistance oscillation in a two-dimensional electron gas with Rashba spin-orbit coupling, using the balance-equation approach to nonlinear magnetotransport. In the weak current limit the magnetoresistance exhibits periodical Shubnikov-de Haas oscillation with changing Rashba coupling strength for a fixed magnetic field. At finite dc bias, the period of the oscillation halves when the interbranch contribution to resistivity dominates. With further increasing current density, the oscillatory resistivity exhibits phase inversion, i.e., magnetoresistivity minima (maxima) invert to maxima (minima) at certain values of the dc bias, which is due to the current-induced magnetoresistance oscillation.
C M
CM
Wang
X L
XL
Lei
D003198:Computer Simulation; D004553:Electric Conductivity; D004583:Electrons; D060328:Magnetic Phenomena; D011789:Quantum Theory; D012666:Semiconductors; D013113:Spin Labels
D013113:Spin Labels