Commensurability effects for fermionic atoms trapped in 1D optical lattices

Details Commensurability effects for fermionic atoms trapped in 1D optical lattices Commensurability effects for fermionic atoms trapped in 1D optical lattices

2007-07-23

arxiv.org/abs/0707.3209v1

Phys. Rev. Lett. 99, 080404 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

Accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.99.080404

Fermionic atoms in two different hyperfine states confined in optical lattices show strong commensurability effects due to the interplay between the atomic density wave (ADW) ordering and the lattice potential. We show that spatially separated regions of commensurable and incommensurable phases can coexist. The commensurability between the harmonic trap and the lattice sites can be used to control the amplitude of the atomic density waves in the central region of the trap.

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