Extended dynamical mean-field study of the Hubbard model with long range interactions - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2014

Extended dynamical mean-field study of the Hubbard model with long range interactions

Abstract

Using extended dynamical mean-field theory and its combination with the $GW$ approximation, we compute the phase diagrams and local spectral functions of the single-band extended Hubbard model on the square and simple cubic lattices, considering long range interactions up to the third nearest neighbors. The longer range interactions shift the boundaries between the metallic, charge-ordered insulating and Mott insulating phases, and lead to characteristic changes in the screening modes and local spectral functions. Momentum-dependent self-energy contributions enhance the correlation effects and thus compete with the additional screening effect from longer range Coulomb interactions. Our results suggest that the influence of longer range intersite interactions is significant, and that these effects deserve attention in realistic studies of correlated materials.
Fichier principal
Vignette du fichier
1404.7047v2.pdf (1.71 Mo) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

cea-01342149 , version 1 (05-07-2016)

Identifiers

Cite

Li Huang, Thomas Ayral, Silke Biermann, Philipp Werner. Extended dynamical mean-field study of the Hubbard model with long range interactions. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90 (19), pp.5114. ⟨10.1103/PhysRevB.90.195114⟩. ⟨cea-01342149⟩
113 View
388 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More