2-IMPURITY KONDO PROBLEM FOR CORRELATED ELECTRONS

Authors
HALLBERG K EGGER R
Citation
K. Hallberg et R. Egger, 2-IMPURITY KONDO PROBLEM FOR CORRELATED ELECTRONS, Physical review. B, Condensed matter, 55(14), 1997, pp. 8646-8649
Citations number
29
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
55
Issue
14
Year of publication
1997
Pages
8646 - 8649
Database
ISI
SICI code
0163-1829(1997)55:14<8646:2KPFCE>2.0.ZU;2-R
Abstract
The behavior of two magnetic impurities coupled to correlated electron s in one dimension is studied using the density-matrix renormalization -group technique for several fillings. Onsite Coulomb interactions amo ng the electrons lead to a small Kondo screening cloud and an overall suppression of magnetic order. For arbitrary electronic correlations a nd large interimpurity distances R, we find a 1/R-2 decay of magnetic correlations.