Journal
PHYSICAL REVIEW LETTERS
Volume 112, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.255301
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Funding
- Austrian Science Fund (FWF) [P 25454-N27]
- ERC Synergy Grant UQUAM
- SFB FOQUS
- EU-Projekt SIQS
- Austrian Science Fund (FWF) [P 25454] Funding Source: researchfish
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Two-dimensional crystals melt via an intermediate hexatic phase, which is characterized by an anomalous scaling of spatial and orientational correlation functions and the absence of an attraction between dislocations. We propose a protocol to study the effect of quantum fluctuations on the nature of this phase with a model system of strongly correlated ultracold polar molecules. Dislocations can be located in experiment from local energy differences which induce internal stark shifts in the molecules. We present a criterion to identify the hexatic phase from the statistics of the end points of topological defect strings and find a hexatic phase, which is dominated by quantum fluctuations, between the crystal and superfluid phases.
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