RIGOROUS RESULTS FOR HALF-FILLED KONDO LATTICES

Authors
TSUNETSUGU H
Citation
H. Tsunetsugu, RIGOROUS RESULTS FOR HALF-FILLED KONDO LATTICES, Physical review. B, Condensed matter, 55(5), 1997, pp. 3042-3045
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
55
Issue
5
Year of publication
1997
Pages
3042 - 3045
Database
ISI
SICI code
0163-1829(1997)55:5<3042:RRFHKL>2.0.ZU;2-X
Abstract
It is proved that the ground state of the half-filled Kondo lattice is unique and spin singlet. For a wide class of the systems including ex tra interactions with various topology of the lattice structure, this proof is generalized and the total spin of the ground state is determi ned. A ferromagnetic ground state appears in some special cases and it s criterion is given.