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- W2017291966 abstract "We investigate a cold-atom mixture of spinless bosons and fermions in two-dimensional optical lattices. In the presence of a nested Fermi surface, the bosons may develop a fascinating supersolid behavior characterized by a finite superfluid density as well as a spatial density wave order. Focusing on the triangular lattice geometry and combining a general Landau-Ginzburg-Wilson approach with microscopically derived mean-field theory, we find an exotic supersolid phase at a fermionic band filling of ${n}_{f}=3∕4$ with a kagome-type crystalline order. We also address the case of anisotropic hopping amplitudes and show that striped supersolid phases emerge on the square and triangular lattices. For weak interactions, the supersolid competes with phase separation. For strong intraspecies and interspecies interactions, with the total number of fermions and bosons corresponding to one particle per site, the bosons form an alternating Mott insulator ground state. Finally, for a mixture of $^{87}mathrm{Rb}^{40}mathrm{K}$ and $^{23}mathrm{Na}^{6}mathrm{Li}$, we show that supersolidity can be observed in the range of accessible temperatures in the square lattice geometry." @default.
- W2017291966 created "2016-06-24" @default.
- W2017291966 creator A5035939119 @default.
- W2017291966 creator A5046471767 @default.
- W2017291966 creator A5077374865 @default.
- W2017291966 date "2009-08-28" @default.
- W2017291966 modified "2023-10-16" @default.
- W2017291966 title "Supersolidity of cold-atom Bose-Fermi mixtures in optical lattices" @default.
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- W2017291966 doi "https://doi.org/10.1103/physreva.80.023624" @default.
- W2017291966 hasPublicationYear "2009" @default.
- W2017291966 type Work @default.
- W2017291966 sameAs 2017291966 @default.