SciPost Physics

SciPost Phys. 6, 067 (2019) · published 14 June 2019

• doi: 10.21468/SciPostPhys.6.6.067
• pdf
• BiBTeX
• RIS
• Submissions/Reports
• 

Abstract

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.

• He et al., Terminable Transitions in a Topological Fermionic Ladder
  Phys. Rev. Lett. 132, 136501 (2024) [Crossref]
• in ’t Veld et al., Bandwidth renormalization due to the intersite Coulomb interaction
  J. Phys.: Condens. Matter 31, 465603 (2019) [Crossref]
• Sushchyev et al., Thermodynamics of the metal-insulator transition in the extended Hubbard model from determinantal quantum Monte Carlo
  Phys. Rev. B 106, 155121 (2022) [Crossref]
• Jiang, Enhancing d -wave superconductivity with nearest-neighbor attraction in the extended Hubbard model
  Phys. Rev. B 105, 024510 (2022) [Crossref]
• Paki et al., Charge order and antiferromagnetism in the extended Hubbard model
  Phys. Rev. B 99, 245146 (2019) [Crossref]
• Yao et al., Determinant quantum Monte Carlo for the half-filled Hubbard model with nonlocal density-density interactions
  Phys. Rev. B 106, 195121 (2022) [Crossref]
• Dong et al., Short-range charge fluctuations in the two-dimensional Hubbard model
  Phys. Rev. B 101, 195115 (2020) [Crossref]
• Sherman, Two-dimensional extended Hubbard model: doping, next-nearest neighbor hopping and phase diagrams
  Phys. Scr. 98, 115947 (2023) [Crossref]
• Kapetanović et al., Nonlocal exchange interactions in strongly correlated electron systems
  Phys. Rev. B 101, 235165 (2020) [Crossref]