TY - JOUR
T1 - Microwave photoresistance in a two-dimensional electron gas with separated Landau levels
AU - Hatke, A. T.
AU - Zudov, M. A.
AU - Pfeiffer, L. N.
AU - West, K. W.
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011/12/15
Y1 - 2011/12/15
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.84.241304
DO - 10.1103/PhysRevB.84.241304
M3 - Article
AN - SCOPUS:84855404938
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 24
M1 - 241304
ER -