Coulomb effects at the metal-insulator transition of disordered electrons

Authors
Si, QM Varma, CM
Citation
Qm. Si et Cm. Varma, Coulomb effects at the metal-insulator transition of disordered electrons, PHYSICA B, 261, 1999, pp. 707-710
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
261
Year of publication
1999
Pages
707 - 710
Database
ISI
SICI code
0921-4526(199901)261:<707:CEATMT>2.0.ZU;2-G
Abstract
At low enough density, the screening length of a disordered interacting ele ctron gas may become larger than its mean free path. Calculation of the con ductivity in such a case shows a strong tendency towards the insulating sta te in two dimensions. The compressibility being proportional to the inverse screening length is expected to vanish as the transition to the insulating state is approached. (C) 1999 Elsevier Science B.V. All rights reserved.