2 papers
cond-mat.str-el2005
Magnetic properties of correlated electrons
Romuald Lemanski
We analyze a system composed of itinerant electrons and localized spins with on-site interactions representing the Hund's first rule. Properties of the system are studied rigorousl…
cond-mat.str-el2002
Correlated hopping in the 1D Falicov-Kimball model
Zbigniew Gajek, Romuald Lemanski
Both canonical and grand canonical phase diagrams of the one-dimensional Falicov-Kimball model (FKM) with correlated hopping are presented for several values of the model parameter…