Heteronuclear fermionic superfluids with spin degrees of freedom

TL;DR

This paper develops a theoretical framework for heteronuclear fermionic superfluids with spin degrees of freedom, analyzing their magnetic phases and drawing parallels with spinor Bose-Einstein condensates, with implications for ultracold atomic experiments.

Contribution

It introduces a mean-field theory for heteronuclear fermionic superfluids with arbitrary half-integer spins, exploring their magnetic phases without external magnetic fields.

Findings

Identifies possible magnetic phases of heteronuclear fermionic superfluids.

Draws parallels between fermionic superfluids and spinor Bose-Einstein condensates.

Discusses potential experimental realizations.

Abstract

We present a theory of spinor superfluidity in a two-species heteronuclear ultracold fermionic atomic gas consisting of arbitrary half-integer spin and one-half spin atoms. In particular, we focus on the magnetism of the superfluid phase and determine the possible phases in the absence of a magnetic field. Our work demonstrates similarities between heteronuclear fermionic superfluids and spinor Bose-Einstein condensates at the mean-field level. Possible experimental situations are discussed.