Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics
Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics
Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics
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Realization <strong>of</strong> Fermionic Superfluid State in an Optical Lattice<br />
via a Bilaryer Band Insulator<br />
Yogeshwar Prasad, Amal Medhi, Vijay B. Shenoy<br />
Centre for Condensed Matter Theory, Department <strong>of</strong> <strong>Physics</strong>,<br />
Indian Institute <strong>of</strong> Science, Bangalore 560012, India.<br />
Abstract<br />
We propose a model to realize a fermionic superfluid state in an optical lattice, which is one <strong>of</strong><br />
the central problems in the area <strong>of</strong> ultracold quantum gases due to cooling problem. The idea <strong>of</strong><br />
our model hinges on a characteristically low entropy state, a band-insulator in an optical bilayer<br />
system and tuning the interaction in such a system to realize the superfluid state. The system is<br />
designed such that the superfluid phase beats other competing phases such as charge density wave<br />
as we show by detailed Monte Carlo calculations. Within the Gaussian approximation, we show<br />
that the superfluid state has a high characteristic temperature scale <strong>of</strong> the order <strong>of</strong> hopping energy.<br />
We suggest a route for the possible experimental realization <strong>of</strong> this state in an optical lattice.<br />
Work supported by CSIR, DAE and DST.<br />
Reference : arXiv:1206.2407v2<br />
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