EXTENDED HUBBARD-MODEL - A CLUSTER EFFECTIVE-MEDIUM APPROACH

Authors
LAGOS RE LARA GA CABRERA GG
Citation
Re. Lagos et al., EXTENDED HUBBARD-MODEL - A CLUSTER EFFECTIVE-MEDIUM APPROACH, Physical review. B, Condensed matter, 47(19), 1993, pp. 12445-12450
Citations number
46
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
47
Issue
19
Year of publication
1993
Pages
12445 - 12450
Database
ISI
SICI code
0163-1829(1993)47:19<12445:EH-ACE>2.0.ZU;2-U
Abstract
We present a cluster effective-medium approach to the extended Hubbard model, for the zero-temperature, half-filled-band paramagnetic phase. We recover the known limits and comment on the broadening corrections to the model, and find a first-order metal-insulator transition, resu lting from both the cluster nature of the method and the correlated ho pping term.