Interactions in high-mobility 2D electron and hole systems
Abstract
Electron-electron interactions mediated by impurities are studied in several high-mobility two-dimensional (electron and hole) systems where the parameter changes from 0.1 to 10 ( is the momentum relaxation time). This range corresponds to the \textit{intermediate} and \textit {ballistic} regimes where only a few impurities are involved in electron-electron interactions. The interaction correction to the Drude conductivity is detected in the temperature dependence of the resistance and in the magnetoresistance in parallel and perpendicular magnetic fields. The effects are analysed in terms of the recent theories of electron interactions developed for the ballistic regime. It is shown that the character of the fluctuation potential (short-range or long-range) is an important factor in the manifestation of electron-electron interactions in high-mobility 2D systems.
Cite
@article{arxiv.cond-mat/0402139,
title = {Interactions in high-mobility 2D electron and hole systems},
author = {E. A. Galaktionov and A. K. Savchenko and S. S. Safonov and Y. Y. Proskuryakov and L. Li and M. Pepper and M. Y. Simmons and D. A. Ritchie and E. H. Linfield and Z. D. Kvon},
journal= {arXiv preprint arXiv:cond-mat/0402139},
year = {2015}
}
Comments
22 pages, 11 figures; to appear in proceedings of conference "Fundamental Problems of Mesoscopic Physics", Granada, Spain, 6-11 September, 2003