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