Related papers: Competing triangular and stripe supersolid orders in a dipolar quantum gas

Competing triangular and stripe supersolid orders in a dipolar quantum gas

URL: http://arxiv.org/abs/2608.20327v1
Date: Thu, 20 Aug 2026 17:58:58 GMT
Title: Competing triangular and stripe supersolid orders in a dipolar quantum gas
Abstract summary: Supersolids are exotic quantum states in which long-range phase coherence coexists, and may interplay, with emergent spatial orders.<n>Here we experimentally form competing triangular and stripe density-modulated states in a quantum gas of highly magnetic atoms.<n>Our results establish a versatile platform in which multiple phases of the two-dimensional-supersolid phase diagram, and more generally, intertwined symmetry-breaking phenomena, can be investigated.
Score: 0.20972270756982536
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Supersolids are exotic quantum states in which long-range phase coherence coexists, and may interplay, with emergent spatial orders. A particularly rich phase diagram featuring several competing spatial orders is predicted for dipolar supersolids with two-dimensional crystals, yet the experimental observation of this structural variety has remained limited. Here we experimentally form competing triangular and stripe density-modulated states in a quantum gas of highly magnetic atoms confined in a surfboard-shaped trap by tuning contact interaction strength and dipole orientation. We define a structural order parameter and study its statistical behavior. Thereby, we identify both the triangular and stripe phases and the transition between them, the associated critical behavior being marked by enhanced non-Gaussian fluctuations. Furthermore, we observe each spatial structure in both the phase-coherent supersolid regime and the phase-incoherent insulating one, near and far from the unmodulated-to-modulated transition, respectively. Our results establish a versatile platform in which multiple phases of the two-dimensional-supersolid phase diagram, and more generally, intertwined symmetry-breaking phenomena, can be investigated.

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