Catalyzation of supersolidity in binary dipolar condensates

Breakthrough experiments have newly explored the fascinating physics of dipolar quantum droplets and supersolids. The recent realization of dipolar mixtures opens further intriguing possibilities. We show that under rather general conditions, the presence of a second component catalyzes droplet nucleation and supersolidity in an otherwise unmodulated condensate. Droplet catalyzation in miscible mixtures, which may occur even for a surprisingly small impurity doping, results from a local roton instability triggered by the doping-dependent modification of the effective dipolar strength. The catalyzation mechanism may trigger the formation of a two-fluid supersolid, characterized by a generally different superfluid fraction of each component, which opens intriguing possibilities for the future study of spin physics in dipolar supersolids.

Automated summary

Breakthrough experiments have recently explored the fascinating physics of dipolar quantum droplets and supersolids. The realization of dipolar mixtures has opened up further intriguing possibilities. It has been shown that the presence of a second component under certain conditions catalyzes droplet nucleation and supersolidity in an unmodulated condensate. This catalyzation mechanism can lead to the formation of a two-fluid supersolid with different superfluid fractions for each component, providing interesting prospects for studying spin physics in dipolar supersolids.