Alternating-domain supersolids in binary dipolar condensates

TL;DR

This paper predicts a novel binary supersolid phase in two-component dipolar condensates, characterized by alternating domains and the induction of supersolidity in nondipolar components, expanding understanding of supersolid states.

Contribution

It introduces the concept of alternating-domain supersolids in binary dipolar condensates and shows dipolar components can induce supersolidity in nondipolar ones.

Findings

Binary supersolid state with alternating domains predicted.

Dipolar components can induce supersolidity in nondipolar components.

Alternating-domain supersolids do not require quantum stabilization.

Abstract

Two-component dipolar condensates are now experimentally producible, and we theoretically investigate the nature of supersolidity in this system. We predict the existence of a binary supersolid state in which the two components form a series of alternating domains, producing an immiscible double supersolid. Remarkably, we find that a dipolar component can even induce supersolidity in a nondipolar component. In stark contrast to single-component dipolar supersolids, alternating-domain supersolids do not require quantum stabilization, and the number of crystal sites is not strictly limited by the condensate populations, with the density hence being substantially lower. Our results are applicable to a wide range of dipole moment combinations, marking an important step towards long-lived bulk-supersolidity.