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cond-mat.str-el2000
Metallic Ferromagnetism - an Electronic Correlation Phenomenon
D. Vollhardt, N. Blümer, K. Held +1
New insights into the microscopic origin of itinerant ferromagnetism were recently gained from investigations of electronic lattice models within dynamical mean-field theory (DMFT)…
cond-mat.str-el2000★ 37 cited
Correlated hopping of electrons: Effect on the Brinkman-Rice transition and the stability of metallic ferromagnetism
M. Kollar, D. Vollhardt
We study the Hubbard model with bond-charge interaction (`correlated hopping') in terms of the Gutzwiller wave function. We show how to express the Gutzwiller expectation value of…