SU(4)-symmetric Hubbard model at quarter filling: Insights from the dynamical mean-field approach

Abstract

We apply the dynamical mean-field approach to the four-component SU(4)-symmetric Fermi-Hubbard model to study transitions between different magnetically ordered phases as well as the hysteresis behavior in the unordered regime. At quarter filling (one particle per site) on the square lattice we identify both the two-sublattice and plaquette-ordered antiferromagnetic phases with the corresponding entropy-driven hierarchy for critical temperatures. We also analyze the behavior of thermodynamic characteristics: the local double occupancy, compressibility, and entropy per particle, which are relevant for experiments with ultracold alkaline-earth(-like) atoms in optical lattices.

7 pages, 6 figures, published version

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Cited by in corpus (9)

• Universal thermodynamics of an SU($N$) Fermi-Hubbard Model
• Equation of State and Thermometry of the 2D SU($N$) Fermi-Hubbard Model
• Metal-insulator transition and quantum magnetism in the SU(3) Fermi-Hubbard Model: Disentangling Nesting and the Mott Transition
• Many-body Physics of Ultracold Alkaline-Earth atoms with SU($N$)-symmetric interactions
• A generalized effective spin-chain formalism for strongly interacting spinor gases in optical lattice
• Anisotropy-driven magnetic phase transitions in SU(4)-symmetric Fermi gas in three-dimensional optical lattices
• Partial suppression of magnetism in the square lattice SU(3) Hubbard model
• Unit-density SU(3) Fermi-Hubbard Model with Spin Flavor Imbalance
• Trion formation and ordering in the attractive SU(3) Fermi-Hubbard model