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Microwave photoconductivity of a modulated two-dimensional electron gas due to intra-Landau-level transitions

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Motivated by a recent experiment, we study the microwave-induced photoconductivity of a two-dimensional electron gas arising from intra-Landau-level transitions within a model where the electrons are subject to a unidirectional periodic potential in addition to a weaker impurity potential. With appropriate identifications, our results can be compared to experiment and allow us to explain the sign of the photocurrent, its dependence on magnetic field and microwave frequency, as well as the microwave-induced suppression of the Shubnikov-deHaas oscillations.

TidsskriftPhysical Review B - Condensed Matter and Materials Physics
Udgave nummer16
StatusUdgivet - 15 okt. 2005

ID: 226827645