|
Andreas Mielke
Institut for Theoretical Physics
Ruprecht-Karls University
Philosophenweg 19
D-69120 Heidelberg
Germany
Tel.: ++49 6221 549431 (Secretary)
Fax: ++49 6221 549331
e-mail:
mielke@tphys.uni-heidelberg.de
Andreas Mielke: Ferromagnetism in single band Hubbard models with a partially flat band
Phys. Rev. Lett.82,
4312-4315
(1999)
.
Abstract
A Hubbard model with a single, partially flat band has ferromagnetic ground states. It is shown that local stability of ferromagnetism implies its global stability in such a model: The model has only ferromagnetic ground states if there are no single spin-flip ground states. Since a single-band Hubbard model away from half filling describes a metal, this result may open a route to metallic ferromagnetism in single band Hubbard models.
BibTeX-entry
@article{Mielke1999a,
author="Andreas Mielke",
title="Ferromagnetism in single band Hubbard models with a partially flat band",
journal="Phys. Rev. Lett.",
volume="82",
pages="4312-4315",
year="1999"
}
Back to the list of publications.
Last changes: 2.9.2024.
mielke@tphys.uni-heidelberg.de
Privacy policy
|