Microwave photoresistance in a two-dimensional electron gas with separated Landau levels

A. T. Hatke, M. A. Zudov, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Theories of microwave-induced resistance oscillations in high-mobility two-dimensional electron gas predict that, with decreasing oscillation order n or with increasing frequency ω, the photoresistance maxima should appear closer to the cyclotron resonance harmonics due to increased Landau-level separation. In this experimental study we demonstrate that, while for a given ω the peaks do move toward the harmonics with decreasing n, there is no corresponding movement with increasing ω for a given n. These findings show that the positions of the photoresistance maxima cannot be directly linked to the Landau-level separation, challenging our current understanding of the phenomenon.

Original languageEnglish (US)
Article number241304
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number24
DOIs
StatePublished - Dec 15 2011

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