In contrast to the Hubbard model, the extended Hubbard model, which additionally accounts for non-local interactions, lacks systemic studies of thermodynamic properties especially across the metal-insulator transition. Using a variational principle, we perform such a systematic study and describe how non-local interactions screen local correlations differently in the Fermi-liquid and in the insulator. The thermodynamics reveal that non-local interactions are at least in parts responsible for first-order metal-insulator transitions in real materials.
Cited by 3
Yann in ’t Veld et al., Bandwidth renormalization due to the intersite Coulomb interaction
J. Phys.: Condens. Matter 31, 465603 (2019) [Crossref]
Joseph Paki et al., Charge order and antiferromagnetism in the extended Hubbard model
Phys. Rev. B 99, 245146 (2019) [Crossref]
Xinyang Dong et al., Short-range charge fluctuations in the two-dimensional Hubbard model
Phys. Rev. B 101, 195115 (2020) [Crossref]
Ontology / TopicsSee full Ontology or Topics database.
Authors / Affiliations: mappings to Contributors and OrganizationsSee all Organizations.
- 1 Universität Bremen / University of Bremen
- 2 Radboud Universiteit Nijmegen / Radboud University Nijmegen [RUN]