Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

MP: Theoretische und Mathematische Grundlagen der Physik

MP 5: Condensed Matter

MP 5.1: Fachvortrag

Dienstag, 8. März 2005, 14:00–14:20, TU MA141

Ferromagnetism in the Hubbard-HFz, for large coupling and small filling. — •Marcos Travaglia¹, Volker Bach¹, and Elliott Lieb² — ¹Mainz University — ²Princeton Universtiy

By HFz-Hubbard model we mean the usual Hubbard model defined on the set of Slater determinants (Hartree-Fock states), whose spin-waves don’t have a spiral motion w.r.t. the lattice but they stay in a plane (z-plane). For this model with small filling we proved that the ferromagnetism takes place for large enough, but finite coupling.