Vortex lattice transitions in cyclic spinor condensates

ORAL

Abstract

We study the energetics of vortices and vortex lattices produced by rotation in the cyclic phase of $F=2$ spinor Bose condensates. In addition to the familiar triangular lattice predicted by Tkachenko for $^4$He, many more complex lattices appear in this system as a result of the spin degree of freedom. In particular, we predict a magnetic-field-driven transition from a triangular lattice to a honeycomb lattice. Other transitions and lattice geometries are driven at constant field by changes in the temperature-dependent ratio of charge and spin stiffnesses, including a transition through an aperiodic vortex structure.

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Authors

  • Subroto Mukerjee

    UC Berkeley

  • Ryan Barnett

    California Institute of Technology

  • Joel Moore

    Berkeley, Department of Physics, University of California, and Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA, Department of Physics, UC Berkeley, and Materials Sciences Division, Lawrence Berkeley National Laboratory, UC Berkeley