Finite temperature Mott transition in Hubbard model on anisotropic triangular lattice

TL;DR

This paper studies the Mott transition in the Hubbard model on an anisotropic triangular lattice, revealing reentrant behavior caused by the interplay of Fermi-liquid formation and magnetic correlations, aligning with experimental observations.

Contribution

It demonstrates the reentrant Mott transition behavior in a frustrated lattice system using cellular dynamical mean field theory, highlighting the role of geometrical frustration.

Findings

Reentrant Mott transition behavior observed

Reentrant behavior linked to geometrical frustration

Results consistent with organic material experiments

Abstract

We investigate the Hubbard model on the anisotropic triangular lattice by means of the cellular dynamical mean field theory. The phase diagram determined in the Hubbard interaction versus temperature plane shows novel reentrant behavior in the Mott transition due to the competition between Fermi-liquid formation and magnetic correlations under geometrical frustration. We demonstrate that the reentrant behavior is characteristic of the Mott transition with intermediate geometrical frustration and indeed consistent with recent experimental results of organic materials.