4 papers · 1 filter
Ground state energy of metallic ferromagnet in a generalized Hubbard model
L. Didukh, O. Kramar, Yu. Skorenkyy
In the present work ferromagnetic ordering in the Hubbard model generalized by taking into account the inter-atomic exchange interaction and correlated hopping in partially filled…
Pressure-Temperature Phase Diagram of Generalized Hubbard Model with Correlated Hopping at Half-Filling
Leonid Didukh, Vasyl Hankevych
In the present paper pressure-temperature phase diagram of a generalized Hubbard model with correlated hopping in a paramagnetic state at half-filling is determined by means of the…
Ferromagnetic ordering in a generalized Hubbard model: weak intra-atomic interaction limit
L. Didukh
In the present work ferromagnetic ordering in the Hubbard model generalized by taking into account the inter-atomic exchange interaction and correlated hopping in partially filled…
A New Two-Pole Approximation in the Hubbard Model. Metal-Insulator Transition
Leonid Didukh
A new two-pole approximation, which allows to describe the transition from an insulating state to a metallic one at increase of bandwidth, and also the observable in some compounds…