SCREENING OF THE COULOMB GAP

Citation
Xl. Hu et al., SCREENING OF THE COULOMB GAP, Solid state communications, 96(2), 1995, pp. 65-68
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
0038-1098
Volume
96
Issue
2
Year of publication
1995
Pages
65 - 68
Database
ISI
SICI code
0038-1098(1995)96:2<65:SOTCG>2.0.ZU;2-5
Abstract
Data from resistivity measurements are presented which confirm a Coulo mb gap in the density of states in two-dimensional variable-range hopp ing. For large hopping lengths the Coulomb interaction is screened by a metallic gate. A universal crossover to Mott hopping at low temperat ures is observed. Internal consistency of the data and excellent agree ment with theory are achieved with a single parameter fit.