Magnetism and Mottness in the unfrustrated triangular lattice Hubbard model: a cellular dynamical mean-field study

ORAL

Abstract

We investigate the phase diagram of the unfrustrated triangular lattice Hubbard model in a center-focused cellular dynamical mean-field theory (CDMFT) approach using impurity clusters of 4, 7 and 19 sites [1,2]. We investigate the Mott metal-to-insulator transition and crossover region in terms of these cluster sizes. Using a magnetic symmetry-broken approach of the CDMFT, allowing for a rotations of spins on the Bloch sphere, we are able to investigate the magnetic ordering of the different cluster schemes.

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Publication: [1] Alexander Wietek, Riccardo Rossi, Fedor Šimkovic IV, Marcel Klett, Philipp Hansmann, Michel Ferrero, E. Miles Stoudenmire, Thomas Schäfer, Antoine Georges, Phys. Rev. X 11, 041013 (2021).
[2] M. Klett, N. Wentzell, T. Schäfer, F. Šimkovic IV, O. Parcollet, S. Andergassen, and P. Hansmann, Phys. Rev. Research 2, 033476 (2020).

Presenters

  • Marcel Klett

    • Max Planck Research Group "Theory of Strongly Correlated Quantum Matter" (SCQM), Max Planck Institute for Solids State Research, Stuttgart, Germany
    • Max Planck Research Group "Theory of Strongly Correlated Quantum Matter" (SCQM), Max Planck Institute for Solid State Research, Stuttgart, Germany

Authors

  • Marcel Klett

    • Max Planck Research Group "Theory of Strongly Correlated Quantum Matter" (SCQM), Max Planck Institute for Solids State Research, Stuttgart, Germany
    • Max Planck Research Group "Theory of Strongly Correlated Quantum Matter" (SCQM), Max Planck Institute for Solid State Research, Stuttgart, Germany

  • Michel Ferrero

    • Ecole Polytechnique
    • École Polytechnique
    • École Polytechnique, Palaiseau

  • Philipp Hansmann

    • Universität Erlangen-Nürnberg
    • Friedrich-Alexander-University Erlangen-Nuernberg
    • Friedrich-Alexander-Universität Erlangen-Nuernberg

  • Thomas Schaefer

    • Max Planck Research Group "Theory of Strongly Correlated Quantum Matter" (SCQM), Max Planck Institute for Solids State Research, Stuttgart, Germany
    • Max Planck Research Group
    • Max Planck Research Group "Theory of Strongly Correlated Quantum Matter" (SCQM), Max Planck Institute for Solid State Research, Stuttgart, Germany