53 citations · 121 across the 8 of their papers we have counts for
8 papers
Electronic phase transitions in the half-filled ionic Hubbard model
L. Craco, P. Lombardo, R. Hayn +2
A detailed study of electronic phase transitions in the ionic Hubbard model at half filling is presented. Within the dynamical mean field approximation a series of transitions from…
Band-Insulator-Metal-Mott-Insulator transition in the half--filled ionic-Hubbard chain
G. I. Japaridze, R. Hayn, P. Lombardo +1
We investigate the ground state phase diagram of the half-filled repulsive Hubbard model in the presence of a staggered ionic potential , using the continuum-limi…
Re-examining the Verwey transition in Fe3O4
L. Craco, M. S. Laad, E. Müller-Hartmann
Motivated by recent structural data questioning the adequacy of the charge order (CO)/disorder picture for the Verwey transition (at T=T_V) in magnetite, we re-investigate this iss…
Systematic Mapping of the Hubbard Model to the Generalized t-J Model
Alexander Reischl, Erwin Müller-Hartmann, Götz S. Uhrig
The generalized t-J model conserving the number of double occupancies is constructed from the Hubbard model at and in the vicinity of half-filling at strong coupling. The construct…
Orbital Kondo Effect in : A LSDA+DMFT Study
L. Craco, M. S. Laad, E. Müller-Hartmann
Motivated by a collection of experimental results indicating the strongly correlated nature of the ferromagnetic metallic state of , we present results based on a combinat…
On the Normal State Electronic properties of Layered Sr_2 RuO_4
M. S. Laad, E. Müller-Hartmann
Based on a comprehensive perusal of experimental results, we construct a microscopic model describing the normal state of layered 4d oxide Sr_2 RuO_4 incorporating relevant quantum…