Effect of dc excitation on microwave-induced resistance oscillations and zero-resistance states in a two-dimensional electron system

• Published in: Physica. E, Low-dimensional systems & nanostructures Vol. 40; no. 5; pp. 982 - 985
• Main Authors: Zhang, W., Zudov, M.A., Pfeiffer, L.N., West, K.W.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.03.2008; Elsevier
• Subjects: Cold working, work hardening; annealing, quenching, tempering, recovery, and recrystallization; textures; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Microwave-induced resistance oscillations; Non-equilibrium transport; Physics; Treatment of materials and its effects on microstructure and properties; Two-dimensional electron system; Zero-resistance states; Microwave-induced resistance oscillations; 71.63.Hk; Two-dimensional electron system; 74.40.Xy; Zero-resistance states; Non-equilibrium transport; 74.40.Xy; 71.63.Hk; Two-dimensional systems; Two electron system; Microwave conductivity; Microwave radiation; Cyclotron resonance; Two-dimensional electron system; Microwave-induced resistance oscillations; Zero-resistance states; Non-equilibrium transport; Oscillations; Landau levels; Photoconductivity; Quenching
• ISSN: 1386-9477; 1873-1759
• DOI: 10.1016/j.physe.2007.08.066

We study the effect of dc current on microwave photoresistance in a high-mobility two-dimensional electron system. We find that dc current leads to the evolution of the microwave photoresistance maxima into minima and vice versa. Observed quenching of microwave-induced zero resistance states by a dc current is consistent with the domain model but cannot be unambiguously linked to it. We derive a modified resonant condition for photoresistance oscillations under dc current and suggest interpretation in terms of indirect cyclotron resonances in Hall field tilted Landau levels. Detailed understanding of the evolution requires a systematic theory treating both excitation types within a single framework.