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High-Field Magnetotransport in a Two-Dimensional Electron Gas in Quantizing Magnetic Fields and Intense Terahertz Laser Fields

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Date

2004

Authors

Xu, Wen
Lewis, R
Koenraad, P
Langerak, C

Journal Title

Journal ISSN

Volume Title

Publisher

Institute of Physics Publishing

Abstract

We present a combined experimental and theoretical study of interactions between two-dimensional electron gases (2DEGs) and terahertz (THz) free-electron lasers in the presence of quantizing magnetic fields. It is found both experimentally and theoretically that when an intense THz field and a quantizing magnetic field are applied simultaneously to a GaAs-based 2DEG in the Faraday geometry, a strong cyclotron resonance (CR) effect on top of the magnetophonon resonances can be observed by transport measurements at relatively high temperatures. With increasing radiation intensity and/or decreasing temperature, the peaks of the CR are broadened and split due to magnetophoton-phonon scattering.

Description

Keywords

Keywords: Cyclotron resonance; Free electron lasers; Infrared spectrometers; Light emission; Magnetic field effects; Photoconductivity; Scattering; Farady geometry; Terahertz laser fields; Electron gas

Citation

URI

http://hdl.handle.net/1885/80656

Collections

ANU Research Publications

Source

Journal of Physics: Condensed Matter

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1088/0953-8984/16/1/009

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