319 citations · 887 across the 8 of their papers we have counts for
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Towards a first-principles determination of effective Coulomb interactions in correlated electron materials: Role of intershell interactions
Priyanka Seth, Philipp Hansmann, Ambroise van Roekeghem +2
The determination of the effective Coulomb interactions to be used in low-energy Hamiltonians for materials with strong electronic correlations remains one of the bottlenecks for p…
What about U on Surfaces? - Extended Hubbard Models for Adatom Systems from First Principles
Philipp Hansmann, Loig Vaugier, Hong Jiang +1
Electronic correlations together with dimensional constraints lead to some of the most fascinating properties known in condensed matter physics. As possible candidates where these…
Long-range Coulomb interactions in surface systems: a first principles description within self-consistently combined GW and dynamical mean field theory
Philipp Hansmann, Thomas Ayral, Loig Vaugier +2
Systems of adatoms on semiconductor surfaces display competing ground states and exotic spectral properties typical of two-dimensional correlated electron materials which are domin…
Rare-Earth vs. Heavy Metal Pigments and their Colors from First Principles
Jan M. Tomczak, L. V. Pourovskii, L. Vaugier +2
Many inorganic pigments contain heavy metals hazardous to health and environment. Much attention has been devoted to the quest for non-toxic alternatives based on rare-earth elemen…
Hubbard U and Hund's Exchange J in Transition Metal Oxides: Screening vs. Localization Trends from Constrained Random Phase Approximation
Loig Vaugier, Hong Jiang, Silke Biermann
In this work, we address the question of calculating the local effective Coulomb interaction matrix in materials with strong electronic Coulomb interactions from first principles.…
Low-energy models for correlated materials: bandwidth renormalization from Coulombic screening
M. Casula, Ph. Werner, L. Vaugier +3
We provide a prescription for constructing Hamiltonians representing the low energy physics of correlated electron materials with dynamically screened Coulomb interactions. The key…
Reduced effective spin-orbital degeneracy and spin-orbital ordering in paramagnetic transition metal oxides: Sr2IrO4 vs. Sr2RhO4
Cyril Martins, Markus Aichhorn, Loig Vaugier +1
We discuss the notions of spin-orbital polarization and ordering in paramagnetic materials, and address their consequences in transition metal oxides. Extending the combined densit…
Spectral density of an interacting dot coupled indirectly to conducting leads
L. Vaugier, A. A. Aligia, A. M. Lobos
We study the spectral density of electrons rho in an interacting quantum dot (QD) with a hybridization lambda to a non-interacting QD, which in turn is coupled to a non-interacting…