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Dynamical mean field theory of moire bilayer transition metal dichalcogenides

ORAL

Abstract

We present a comprehensive dynamical mean field study of the moire Hubbard model, which is believed to represent the physics of moire bilayer transition metal dichalcogenides. In these materials the band structure (including the presence or absence of a higher order van Hove singularity) can be tuned by varying a ``displacement field". We present a magnetic and metal-insulator phase diagram and a detailed study of the dependence of the resistivity on temperature, band filling and displacement field. We find regions of strange metal behavior as well as Fermi liquid regions and show how varying the displacement field leads to actual or apparent criticality and how magnetic order affects the resistivity. We compare our results to recent experiments.

Presenters

  • Jiawei Zang

    Columbia University

Authors

  • Jiawei Zang

    Columbia University

  • Jie Wang

    Flatiron Institute

  • Jennifer Cano

    Stony Brook University; Flatiron Institute, Stony Brook University (SUNY) / Flatiron Institute, State Univ of NY - Stony Brook, Stony Brook University, Stony Brook University (SUNY), Stony Brook University, Flatiron Institute

  • Andrew J Millis

    Columbia University, Columbia University; Flatiron Institute, Columbia University, Flatiron Institute

  • Antoine Georges

    Flatiron Institute, College de France, College de France