Giant Fluctuations of Coulomb Drag in a Bilayer System

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We have observed reproducible fluctuations of the Coulomb drag, both as a function of magnetic field and electron concentration, which are a manifestation of quantum interference of electrons in the layers. At low temperatures the fluctuations exceed the average drag, giving rise to random changes of the sign of the drag. The fluctuations are found to be much larger than previously expected, and we propose a model which explains their enhancement by considering fluctuations of local electron properties.
10 pages, 4 figures

Keywords

Mesoscale and Nanoscale Physics, Disordered Systems and Neural Networks, Materials Science

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/127133

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.1242
 http://arxiv.org/abs/0704.1242
 Science, Vol.316, 99 (2007)
 doi:10.1126/science.1139227

Collections

arXiv