INSTABILITY OF VORTEX TEXTURES IN THE 2-DIMENSIONAL HUBBARD-MODEL

Authors
YONEMITSU K BISHOP AR
Citation
K. Yonemitsu et Ar. Bishop, INSTABILITY OF VORTEX TEXTURES IN THE 2-DIMENSIONAL HUBBARD-MODEL, Physical review. B, Condensed matter, 48(9), 1993, pp. 6680-6682
Citations number
26
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
48
Issue
9
Year of publication
1993
Pages
6680 - 6682
Database
ISI
SICI code
0163-1829(1993)48:9<6680:IOVTIT>2.0.ZU;2-A
Abstract
The Hubbard model on a two-dimensional square lattice is investigated within an unrestricted, inhomogeneous Hartree-Fock approximation. Vort exlike states discussed by Verges et al. [Phys. Rev. B 43, 6099 (1991) ] are studied in detail. They are found to be unstable against transve rse spin fluctuations. Doping of holes does not suppress these fluctua tions strongly enough to stabilize the vortex states.