Stable p-wave resonant two-dimensional Fermi-Bose dimers

TL;DR

This paper explores the formation and stability of p-wave resonant Fermi-Bose dimers in two-dimensional ultracold mixtures, demonstrating their tunability and resistance to recombination and clustering.

Contribution

It introduces a method to realize stable p-wave resonant Fermi-Bose dimers in 2D ultracold mixtures with controlled interactions.

Findings

Bosonic exchanges induce tunable intermolecular attraction.

Fermionic molecules are stable against recombination.

Dimers resist formation of higher-order clusters.

Abstract

We consider two-dimensional weakly-bound heterospecies molecules formed in a Fermi-Bose mixture with attractive Fermi-Bose and repulsive Bose-Bose interactions. Bosonic exchanges lead to an intermolecular attraction, which can be controlled and tuned to a p-wave resonance. Such attractive fermionic molecules can be realized in quasi-two-dimensional ultracold isotopic or heteronuclear mixtures. We show that they are stable with respect to the recombination to deeply-bound molecular states and with respect to the formation of higher-order clusters (trimers, tetramers, etc.)