861 citations · 5.8k across the 80 of their papers we have counts for
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Efficient perturbation theory for quantum lattice models
H. Hafermann, G. Li, A. N. Rubtsov +3
We present a novel approach to long-range correlations beyond dynamical mean-field theory through a ladder approximation to dual fermions. The new technique is applied to the two-d…
On the mechanism for orbital-ordering in KCuF3
E. Pavarini, E. Koch, A. I. Lichtenstein
The Mott insulating perovskite KCuF3 is considered the archetype of an orbitally-ordered system. By using the LDA+dynamical mean-field theory (DMFT) method, we investigate the mech…
Correlation effects in the electronic structure of Mn molecular magnet
D. W. Boukhvalov, L. I. Vergara, V. V. Dobrovitski +5
We present joint theoretical-experimental study of the correlation effects in the electronic structure of (pyH)[MnOCl(OAc)]2MeCN molecular magnet (Mn…
Weak ferromagnetism in Mn nanochains on the CuN surface
A. N. Rudenko, V. V. Mazurenko, V. I. Anisimov +1
We investigate electronic and magnetic structures of the Mn chains supported on the CuN surface using first-principle LSDA and LDA+U calculations. The isotropic exchange integrals…