159 citations · 159 across the 1 of their papers we have counts for
5 papers
Strongly correlated properties of the thermoelectric cobalt oxide Ca3Co4O9
P. Limelette, V. Hardy, P. Auban-Senzier +7
We have performed both in-plane resistivity, Hall effect and specific heat measurements on the thermoelectric cobalt oxide CaCoO. Four distinct transport regimes…
Large Thermopower in Metallic Oxides: Misfit Cobaltites and Mangano-Ruthenates
Sylvie Hebert, Christine Martin, Antoine Maignan +3
Two different kinds of metal transition oxides have been studied for their large thermopower values. The first one corresponds to the Tl-based misfit cobaltite which is a hole-dope…
Ferromagnetism in a Realistic Two-Band Model: A Slave-Boson Study
Raymond Fresard, Mathieu Lamboley
Using a slave boson representation of multi-band Hubbard models, we investigate a two-band model relevant to layered perovskites in the vicinity of half-filling. Beside the strong…
Metal to Insulator Transition in the 2-D Hubbard Model: A Slave Boson Approach
Raymond Fresard, Klaus Doll
We use the Kotliar-Ruckenstein slave boson technique to treat the strong correlation of the Hubbard model. In a first part we discuss the metal to insulator transition that is occu…
Slave Boson Formulation for Interacting Boson Systems and the Superfluid-Insulator Transition
Raymond Fresard
A new formulation for the study of interacting bosons on a lattice is introduced. This approach is used to give analytical expressions for the Mott insulating lobes in the phase di…