MAGNETIC-PROPERTIES OF ALMOST LOCALIZED FERMIONS

Authors
SPALEK J WOJCIK W
Citation
J. Spalek et W. Wojcik, MAGNETIC-PROPERTIES OF ALMOST LOCALIZED FERMIONS, Journal of magnetism and magnetic materials, 144, 1995, pp. 1199-1200
Citations number
8
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
144
Year of publication
1995
Part
2
Pages
1199 - 1200
Database
ISI
SICI code
0304-8853(1995)144:<1199:MOALF>2.0.ZU;2-Q
Abstract
We present the results for the magnetization and the Mott localization boundary, both quantities as a function of applied magnetic field. To obtain these results we use the rotation invariant slave-boson repres entation of correlated fermions with proper fermion representation of the spin operator. This approach goes beyond the Gutzwiller approximat ion, since it contains a nonlinear molecular field in addition to the band narrowing due to correlations.