title: Cyclotron-resonance harmonics in the ac response of a 2D electron gas with smooth disorder.
abstract: The frequency-dependent conductivity sigma(xx)(omega) of 2D electrons subjected to a transverse magnetic field and smooth disorder is calculated. The interplay of Landau quantization and disorder scattering gives rise to an oscillatory structure that survives in the high-temperature limit. The relation to recent experiments on photoconductivity by Zudov et al. and Mani et al. is discussed.
authors.affiliation: Institut für Nanotechnologie, Forschungszentrum Karlsruhe, 76021 Karlsruhe, Germany.
authors.forename: I A
authors.initials: IA
authors.lastname: Dmitriev
authors.forename: A D
authors.initials: AD
authors.lastname: Mirlin
authors.forename: D G
authors.initials: DG
authors.lastname: Polyakov