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29 March 2024
 
  » arxiv » 1502.3214

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Competing structures in 2D-trapped dipolar gases
Barbara Gränz ; Sergey E. Korshunov ; Vadim B. Geshkenbein ; Gianni Blatter ;
Date 11 Feb 2015
AbstractWe study a system of dipolar molecules confined in a two-dimensional trap and subject to an optical square lattice. The repulsive long-range dipolar interaction $D/r^3$ favors an equilateral triangular arrangement of the molecules, which competes against the square symmetry of the underlying optical lattice with lattice constant $b$ and amplitude $V$. We find the minimal-energy states at the commensurate density $n = 1/b^2$ and establish the complete square-to-triangular transformation pathway of the lattice with decreasing $V$ involving period-doubled, solitonic, and distorted-triangular configurations.
Source arXiv, 1502.3214
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