Supersolid phase with cold polar molecules on a triangular lattice

Abstract

We study a system of heteronuclear molecules on a triangular lattice and analyze the potential of this system for the experimental realization of a supersolid phase. The ground state phase diagram contains superfluid, solid and supersolid phases. At finite temperatures and strong interactions there is an additional emulsion region, in contrast to similar models with short-range interactions. We derive the maximal critical temperature $T_c$ and the corresponding entropy $S/N=0.04(1)$ for supersolidity and find feasible experimental conditions for its realization.

4 pages, 4 figures

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