Orbital ordering of ultracold alkaline-earth atoms in optical lattices
arXiv:2002.11333 · doi:10.1103/PhysRevResearch.2.023188
Abstract
We report on a dynamical mean-field theoretical analysis of emerging low-temperature phases in multicomponent gases of fermionic alkaline-earth(-like) atoms in state-dependent optical lattices. Using the example of Yb atoms, we show that a two-orbital mixture with two nuclear spin components is a promising candidate for studies of not only magnetic but also staggered orbital ordering peculiar to certain solid-state materials. We calculate and study the phase diagram of the full Hamiltonian with parameters similar to existing experiments and reveal an antiferroorbital phase. This long-range-ordered phase is inherently stable, and we analyze the change of local and global observables across the corresponding transition lines, paving the way for experimental observations. Furthermore, we suggest a realistic extension of the system to include and probe a Jahn-Teller source field playing one of the key roles in real crystals.
arXiv comment8 pages, 6 figures, final version
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Cited by in corpus (4)
- Many-body Physics of Ultracold Alkaline-Earth atoms with SU()-symmetric interactions
- SU(4)-symmetric Hubbard model at quarter filling: Insights from the dynamical mean-field approach
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