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

2005/01/17 by Christian Joas, Juergen Dietel, Jürgen Dietel +1
Engineering · Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.72.165323

7 pages, 2 figures

arxiv created 2005/01/17 · openalex publication_date 2005/10/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

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.

Citations

• Current-voltage characteristics and the zero-resistance state in a two-dimensional electron gas
• Theory of microwave-induced oscillations in the magnetoconductivity of a two-dimensional electron gas
• Observation of Microwave-Induced Zero-Conductance State in Corbino Rings of a Two-Dimensional Electron System
• Magnetotransport in a two-dimensional electron gas at large filling factors
• Steady States of a Microwave-Irradiated Quantum-Hall Gas
• Theory of the oscillatory photoconductivity of a two-dimensional electron system