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Commensurability Effects for Fermionic Atoms Trapped in 1D Optical Lattices

AuthorsMolina, Rafael A. ; Dukelsky, Jorge ; Schmitteckert, Peter
Keywords[PACS] Fermion systems and electron gas
[PACS] Degenerate Fermi gases
[PACS] Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.)
Issue Date24-Aug-2007
PublisherAmerican Physical Society
CitationPhysical Review Letters 99(8): 080404 (2007)
AbstractFermionic atoms in two different hyperfine states confined in optical lattices show strong commensurability effects due to the interplay between the atomic density wave 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.
Description4 pages, 5 figures.-- PACS nrs.: 05.30.Fk; 03.75.Ss; 71.10.Pm.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.99.080404
Appears in Collections:(CFMAC-IEM) Artículos
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