Authors
Citation
M. Acquarone et G. Rebecchi, COMPOSITION DEPENDENT RENORMALIZATION OF CHARGE EXCITATION-ENERGY IN STRONGLY CORRELATED SYSTEMS, Solid state communications, 93(7), 1995, pp. 641-645
Citations number
12
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
00381098
Volume
93
Issue
7
Year of publication
1995
Pages
641 - 645
Database
ISI
SICI code
0038-1098(1995)93:7<641:CDROCE>2.0.ZU;2-L
Abstract
The renormalization of the on-site charge excitation energy U in the
presence of on-site Hubbard correlation U and inter-site Coulomb repul
sion V is evaluated, at zero temperature, in the large U limit, for ar
bitrary electron concentration n(e) = 1 +/- delta. We find U = U - V(
1 - delta), at variance with earlier studies.