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15 papers · 2 filters
Dynamical Screening Effects in Correlated Electron Materials -- A Progress Report on Combined Many-Body Perturbation and Dynamical Mean Field Theory: "GW+DMFT"
Silke Biermann
We give a summary of recent progress in the field of electronic structure calculations for materials with strong electronic Coulomb correlations. The discussion focuses on developm…
Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean field theory
M. W. Haverkort, G. Sangiovanni, P. Hansmann +3
Using a recently developed impurity solver we exemplify how dynamical mean field theory captures band excitations, resonances, edge singularities and excitons in core level x-ray a…
Electronic correlations in Fe at Earth's inner core conditions: effect of doping with Ni
O. Yu. Vekilova, L. V. Pourovskii, I. A. Abrikosov +1
We have studied the body-centered cubic (bcc), face-centered cubic (fcc) and hexagonal close-packed (hcp) phases of Fe alloyed with 25 at. % of Ni at Earth's core conditions using…
Diagrammatic series for extremely correlated Fermi liquids
Edward Perepelitsky, B. Sriram Shastry
The recently developed theory of extremely correlated Fermi liquids (ECFL), applicable to models involving the physics of Gutzwiller projected electrons, shows considerable promise…
Low-energy description of the metal-insulator transition in the rare-earth nickelates
Alaska Subedi, Oleg E. Peil, Antoine Georges
We propose a simple theoretical description of the metal-insulator transition of rare-earth nickelates. The theory involves only two orbitals per nickel site, corresponding to the…
A weakly correlated Fermi liquid state with a small Fermi surface in lightly doped SrIrO
Alberto de la Torre, Emily Claire Hunter, Alaska Subedi +7
We characterize the electron doping evolution of (SrLa)IrO by means of angle-resolved photoemission. Concomitant with the metal insulator transition around…