605 citations
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18 papers · 1 filter
Dynamical Mean-Field Theory within an Augmented Plane-Wave Framework: Assessing Electronic Correlations in the Iron Pnictide LaFeAsO
Markus Aichhorn, Leonid Pourovskii, Veronica Vildosola +5
We present an approach that combines the local density approximation (LDA) and the dynamical mean-field theory (DMFT) in the framework of the full-potential linear augmented plane…
Two-stage metal-insulator transition in the 2D Hubbard model: momentum selectivity in the 8-site dynamical cluster approximation
Philipp Werner, Emanuel Gull, Olivier Parcollet +1
Metal-insulator transitions in the paramagnetic phase of the two dimensional square lattice Hubbard model are studied using the dynamical cluster approximation with eight momentum…
Pseudogap opening and formation of Fermi arcs as an orbital-selective Mott transition in momentum space
M. Ferrero, P. S. Cornaglia, L. De Leo +3
We present an approach to the normal state of cuprate superconductors which is based on a minimal cluster extension of dynamical mean-field theory. Our approach is based on an effe…
Continuous-time auxiliary field Monte Carlo for quantum impurity models
Emanuel Gull, Philipp Werner, Olivier Parcollet +1
We present a continuous-time Monte Carlo method for quantum impurity models, which combines a weak-coupling expansion with an auxiliary-field decomposition. The method is considera…
Friedel oscillations and the Kondo screening cloud
Ian Affleck, Laszlo Borda, Hubert Saleur
We show that the long distance charge density oscillations in a metal induced by a weakly coupled spin-1/2 magnetic impurity exhibiting the Kondo effect are given, at zero temperat…
Effect of Crystal-Field Splitting and Inter-Band Hybridization on the Metal-Insulator Transitions of Strongly Correlated Systems
Alexander I. Poteryaev, Michel Ferrero, Antoine Georges +1
We investigate a quarter-filled two-band Hubbard model involving a crystal-field splitting, which lifts the orbital degeneracy as well as an inter-orbital hopping (inter-band hybri…