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

Autor:	Unukovych, Vladyslav, Sotnikov, Andrii
Rok vydání:	2021
Předmět:	Condensed Matter - Quantum Gases Condensed Matter - Strongly Correlated Electrons
Zdroj:	Physical Review B 104, 245106 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.104.245106
Popis:	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. Comment: 7 pages, 6 figures, published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2107.11219 Zobrazit plný text záznamu View this record from Arxiv