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arXiv · 1204.4187

Stability of FFLO states in optical lattices with bilayer structure

Yasuharu Okawauchi·Akihisa Koga
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Abstract

We investigate the stability of the superfluid state in a bilayer fermionic optical lattice system with a confining potential, using the Bogoliubov de-Gennes equations. It is clarified that in the imbalanced case, the introduction of the interlayer hopping stabilizes the radial Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, while makes the angular FFLO state unstable. We also discuss the system size dependence of the superfluid ground state. It is clarified that in a certain ring region the A-FFLO state is indeed realized in a large system.

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Yasuharu Okawauchi, Akihisa Koga. 2012-04-18. Stability of FFLO states in optical lattices with bilayer structure. https://doi.org/10.1143/jpsj.81.074001

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