Phase Separation in Bose-Fermi-Fermi Mixtures as a Probe of Fermi Superfluidity

TL;DR

This paper investigates how phase separation in Bose-Fermi-Fermi mixtures can serve as a reliable indicator of Fermi superfluidity, providing insights into the stability and phase behavior of such quantum mixtures.

Contribution

It introduces the concept of using phase separation as a novel and robust method to probe Fermi superfluidity in Bose-Fermi mixtures.

Findings

Identification of the phase diagram and instability regimes.

Demonstration of phase separation as a probe for Fermi superfluidity.

Conditions under which homogeneous mixtures become unstable.

Abstract

We study the phase diagram of a mixture of Bose-Einstein condensate and a two-component Fermi gas. In particular, we identify the regime where the homogeneous system becomes unstable against phase separation. We show that, under proper conditions, the phase separation phenomenon can be exploited as a robust probe of Fermi superfluid.