252 citations · 803 across the 17 of their papers we have counts for
4 papers · 1 filter
Born Effective Charge Reversal and Metallic Threshold State at a Band Insulator-Mott Insulator Transition
N. Gidopoulos S. Sorella, E. Tosatti
We study the quantum phase transition between a band (``ionic'') insulator and a Mott-Hubbard insulator, realized at a critical value U=Uc in a bipartite Hubbard model with two ine…
Theory of the Metal-Paramagnetic Mott-Jahn-Teller Insulator Transition in A_4C_{60}
M. Capone, M. Fabrizio, P. Giannozzi +1
We study the unconventional insulating state in A_4C_{60} with a variety of approaches, including density functional calculations and dynamical mean-field theory. While the former…
SiC(0001): a surface Mott-Hubbard insulator
V. I. Anisimov, A. E. Bedin, M. A. Korotin +3
We present ab-initio electronic structure calculations for the Si-terminated SiC(0001) surface. While local density approximation (LDA) calculations predict…
Spin liquid ground state in a two dimensional non-frustrated spin model
G. Santoro, S. Sorella, L. Guidoni +2
We consider an exchange model describing two isotropic spin-1/2 Heisenberg antiferromagnets coupled by a quartic term on the square lattice. The model is relevant for systems with…