Non-linear transport phenomena in a two-subband system

Abstract

We study non-linear transport phenomena in a high-mobility bilayer system with two closely spaced populated electronic subbands in a perpendicular magnetic field. For a moderate direct current excitation, we observe zero-differential-resistance states with a characteristic 1/B periodicity. We investigate, both experimentally and theoretically, the Hall field-induced resistance oscillations which modulate the high-frequency magneto-intersubband oscillations in our system if we increase the current. We also observe and describe the influence of direct current on the magnetoresistance in the presence of microwave irradiation.

8 pages, 6 figures

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• Inter-subband resistance oscillations in crossed electric and magnetic fields
• Linear polarization study of microwave-radiation-induced magnetoresistance oscillations: Comparison of power dependence to theory
• Hall field-induced resistance oscillations in a tunable-density GaAs quantum well
• Tailoring multilayer quantum wells for spin devices
• Effect of Landau quantization on linear magnetoresistance of periodically modulated two-dimensional electron gas
• Nonlinear AC and DC Conductivities in a Two-Subband n-GaAs/AlAs Heterostructure
• Nonlinear response of a MgZnO/ZnO heterostructure close to zero bias
• Optically-detected long-lived spin coherence in multilayer systems: Double and triple quantum wells