Weak localisation, interaction effects and the metallic phase in p-SiGe

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

Magnetoresistance results are presented for p-SiGe samples on the metallic side of the B=0 metal-insulator transition. It was possible to separate the weak localisation and Zeeman interaction effects but the results could not be explained quantitatively within the framework of standard theories for quantum corrections of a weakly interacting 2-dimensional system. Analysis using a theory for interaction corrections at intermediate temperatures, recently proposed by Zala, Narozhny and Aleiner, provided values of the Fermi liquid parameter $F_0^σ$ of order -0.5. Similar values also explain the linear increase of resistance with temperature characteristic of the metallic phase. e
Revised version with significant additions. 9 pages,12 eps figures Submitted to Physical Review B, November 2001

Keywords

Strongly Correlated Electrons

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/30009

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9912041
 http://arxiv.org/abs/cond-mat/9912041

Collections

arXiv