Effect of the next nearest neighbour hopping on the antiferromagnetic properties of a Hubbard model with repulsion

Authors
Granada, JC Vivas, EH
Citation
Jc. Granada et Eh. Vivas, Effect of the next nearest neighbour hopping on the antiferromagnetic properties of a Hubbard model with repulsion, PHYS ST S-B, 220(1), 2000, pp. 471-473
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
03701972 → ACNP
Volume
220
Issue
1
Year of publication
2000
Pages
471 - 473
Database
ISI
SICI code
0370-1972(200007)220:1<471:EOTNNN>2.0.ZU;2-B
Abstract
In the frame of the formalism of functional integration we consider a Hubba rd model with repulsion by taking into account the next nearest neighbour h opping. It is shown that for sufficiently small temperatures and doping par ameter, the system is antiferromagnetically ordered. General expressions fo r the order parameter are obtained.