Supersolid phases of dipolar fermions in a two-dimensional-lattice bilayer array

TL;DR

This paper predicts and demonstrates the existence of supersolid phases in ultracold dipolar fermions confined in a bilayer 2D lattice, showing how tuning interlayer distance influences phase coexistence.

Contribution

It introduces a theoretical prediction of supersolid phases in a bilayer optical lattice system of dipolar fermions using mean-field analysis.

Findings

Supersolid phases coexist with superfluid and density ordered phases.

Tuning interlayer distance controls phase fractions.

Supersolid phases are predicted at fixed chemical potential.

Abstract

Supersolid phases as a result of a coexistence of superfluid and density ordered checkerboard phases are predicted to appear in ultracold Fermi molecules confined in a bilayer array of two-dimensional square optical lattices. We demonstrate the existence of these phases within the inhomogeneous mean-field approach. In particular, we show that tuning the interlayer separation distance at a fixed value of the chemical potential produces different fractions of superfluid, density ordered, and supersolid phases.