THEORY OF THE ANOMALOUS MAGNETIC PHASE-TRANSITION IN UNISN

Authors
OPPENEER PM YARESKO AN PERLOV AY ANTONOV VN ESCHRIG H
Citation
Pm. Oppeneer et al., THEORY OF THE ANOMALOUS MAGNETIC PHASE-TRANSITION IN UNISN, Physical review. B, Condensed matter, 54(6), 1996, pp. 3706-3709
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
6
Year of publication
1996
Pages
3706 - 3709
Database
ISI
SICI code
0163-1829(1996)54:6<3706:TOTAMP>2.0.ZU;2-Z
Abstract
The anomalous magnetic phase transition in UNiSn is explained on the b asis of electronic-structure calculations. The energy band approach in which the local density Hamiltonian is generalized with an additional on-site Coulomb interaction U provides a fully satisfactory picture o f both the metallic antiferromagnetic ground state and the paramagneti c semiconducting state, with a band gap of 0.12 eV, as well as a total energy difference of the correct magnitude as compared to the Neel te mperature.