Temperature and magnetic field dependence of radiation-induced magnetoresistance oscillations in a 2D electron gas

✍ Scribed by Iñarrea, J. ;Platero, G.

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 717 KB
• Volume: 203
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200566106

✦ Synopsis

Abstract

A theoretical model is presented in which the existence of radiation‐induced zero‐resistance states is analyzed. An exact solution for the harmonic oscillator wave function in the presence of radiation, and a perturbation treatment for elastic scattering due to randomly distributed charged impurities, form the foundations of our model. Following this model most experimental results are reproduced. The existence of zero‐resistance states is thus explained in terms of the interplay of the electron MW‐driven orbit dynamics and the Pauli exclusion principle. In order to explain the strong temperature dependence of the longitudinal resistivity and the thermally activated transport in 2DEG, we present also a model based on the damping suffered by the microwave‐driven electronic orbit dynamics by interactions with the lattice ions yielding acoustic phonons. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)