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Thermodynamics of the metal-insulator transition in the extended Hubbard model

by M. Schüler, E. G. C. P. van Loon, M. I. Katsnelson, T. O. Wehling

Submission summary

As Contributors: Malte Schüler
Arxiv Link:
Date submitted: 2019-04-09
Submitted by: Schüler, Malte
Submitted to: SciPost Physics
Domain(s): Theoretical
Subject area: Condensed Matter Physics - Theory


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.

Current status:
Editor-in-charge assigned

Submission & Refereeing History

Submission 1903.09947v2 on 9 April 2019

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