Screened extended Koopmans' theorem: photoemission at weak and strong correlation - Laboratoire de Physique Théorique - LPT Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2023

Screened extended Koopmans' theorem: photoemission at weak and strong correlation

Résumé

By introducing electron screening in the extended Koopmans' theorem we correctly describe the band gap opening in weakly as well as strongly correlated systems. We show this by applying our method to bulk LiH, Si, and paramagnetic as well as antiferromagnetic NiO. Although incorrect features remain in the full photoemission spectra, this is a remarkable result for an ab-initio electronic structure method and it opens the way to a unified description of photoemission spectra at weak and strong correlation.

Dates et versions

hal-03831819 , version 1 (27-10-2022)

Identifiants

Citer

Stefano Di Sabatino, Jaakko Koskelo, Arjan Berger, Pina Romaniello. Screened extended Koopmans' theorem: photoemission at weak and strong correlation. Physical Review B, 2023, 107 (3), pp.035111. ⟨10.1103/PhysRevB.107.035111⟩. ⟨hal-03831819⟩
23 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More