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A model for the microwave assisted magnetoresistance oscillations in a 2D electron system
Author(s) -
Torres Manuel,
Kunold Alejandro
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200460761
Subject(s) - floquet theory , magnetoresistance , physics , dissipation , formalism (music) , condensed matter physics , electron , microwave , magnetic field , impurity , scattering , landau quantization , quantum electrodynamics , quantum mechanics , art , musical , nonlinear system , visual arts
In this work we present a model for the photoconductivity of a two dimensional electron system (2DES) subjected to a magnetic field. The model includes the microwave and Landau contributions in a non‐perturbative exact way, Impurity scattering effects are treated perturbatively. Based on this formalism, we provide a Kubo‐like formula that takes into account the oscillatory Floquet structure of the problem. We discuss results related with the recently discovered zero‐resistance states. It is found that, in agreement with experiment, negative dissipation can only be induced in very high mobility samples. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)