Exact results for itinerant ferromagnetism in multiorbital systems on square and cubic lattices

Yi Li, Elliott H. Lieb, Congjun Wu

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

We study itinerant ferromagnetism in multiorbital Hubbard models in certain two-dimensional square and three-dimensional cubic lattices. In the strong coupling limit where doubly occupied orbitals are not allowed, we prove that the fully spin-polarized states are the unique ground states, apart from the trivial spin degeneracies, for a large region of filling factors. Possible applications to p-orbital bands with ultracold fermions in optical lattices, and electronic 3d-orbital bands in transition-metal oxides, are discussed.

Original languageEnglish (US)
Article number217201
JournalPhysical review letters
Volume112
Issue number21
DOIs
StatePublished - May 27 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Exact results for itinerant ferromagnetism in multiorbital systems on square and cubic lattices'. Together they form a unique fingerprint.

  • Cite this