5 papers
Plasmonic properties and correlation energies from a compact multipole representation of the dielectric response in 2D metals
Dario A. Leon, Claudia Cardoso, Kristian Berland
Multipole-Padé approximants provide a compact representation of dynamical response functions in terms of a small number of collective modes. Here, we generalize this framework to…
Bulk plasmons in elemental metals
Dario A. Leon, Claudia Cardoso, Kristian Berland
The spectral properties, momentum dispersion, and broadening of bulk plasmonic excitations of 26 elemental metals are studied from first principles calculations in the random-phase…
Benchmarking the plasmon-pole and multipole approximations in the Yambo Code using the GW100 dataset
M. Bonacci, D. A. Leon, N. Spallanzani +4
Verification and validation of electronic structure codes are essential to ensure reliable and reproducible results in computational materials science. While density functional the…
Efficient GW calculations for metals from an accurate ab initio polarizability
Giacomo Sesti, Alberto Guandalini, Andrea Ferretti +4
Despite its success in the study of spectroscopic properties, the method presents specific methodological challenges when applied to systems with metallic screening. Here, we…
Spectral properties from an efficient analytical representation of the self-energy within a multipole approximation
Dario A. Leon, Kristian Berland, Claudia Cardoso
We propose an efficient analytical representation of the frequency-dependent self-energy via a multipole approximation (MPA-). The multipole-Padé model for the self-…