Prasad, Yogeshwar and Medhi, Amal and Shenoy, Vijay B (2014) Fermionic superfluid from a bilayer band insulator in an optical lattice. In: PHYSICAL REVIEW A, 89 (4).
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Abstract
We propose a model to realize a fermionic superfluid state in an optical lattice circumventing the cooling problem. Our proposal exploits the idea of tuning the interaction in a characteristically low-entropy state, a band insulator in an optical bilayer system, to obtain a superfluid. By performing a detailed analysis of the model including fluctuations and augmented by a variational quantum Monte Carlo calculation of the ground state, we show that the superfluid state obtained has a high transition temperature of the order of the hopping energy. Our system is designed to suppress other competing orders such as a charge density wave. We suggest a laboratory realization of this model via an orthogonally shaken optical lattice bilayer.
Item Type: | Journal Article |
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Publication: | PHYSICAL REVIEW A |
Publisher: | AMER PHYSICAL SOC |
Additional Information: | copyright for this article belongs to AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
Date Deposited: | 28 May 2014 05:50 |
Last Modified: | 28 May 2014 05:55 |
URI: | http://eprints.iisc.ac.in/id/eprint/49073 |
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