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Thermodynamics of the Hubbard model on stacked honeycomb and square lattices

Author

Listed:
  • Jakub Imriška

    (Theoretische Physik, ETH Zurich)

  • Emanuel Gull

    (University of Michigan)

  • Matthias Troyer

    (Theoretische Physik, ETH Zurich)

Abstract

We present a numerical study of the Hubbard model on simply stacked honeycomb and square lattices, motivated by a recent experimental realization of such models with ultracold atoms in optical lattices. We perform simulations with different interlayer coupling and interaction strengths and obtain Néel transition temperatures and entropies. We provide data for the equation of state to enable comparisons of experiments and theory. We find an enhancement of the short-range correlations in the anisotropic lattices compared to the isotropic cubic lattice, in parameter regimes suitable for the interaction driven adiabatic cooling.

Suggested Citation

  • Jakub Imriška & Emanuel Gull & Matthias Troyer, 2016. "Thermodynamics of the Hubbard model on stacked honeycomb and square lattices," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(8), pages 1-11, August.
    • Handle: RePEc:spr:eurphb:v:89:y:2016:i:8:d:10.1140_epjb_e2016-70146-y
    DOI: 10.1140/epjb/e2016-70146-y
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    Keywords

    Solid State and Materials;

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