Vortex Lattices in Rotating Atomic Bose Gases with Dipolar Interactions

Details Vortex Lattices in Rotating Atomic Bose Gases with Dipolar Interactions Vortex Lattices in Rotating Atomic Bose Gases with Dipolar Interactions

2005-05-31

arxiv.org/abs/cond-mat/0505759v1

Phys. Rev. Lett. 95, 200402 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.95.200402

We show that dipolar interactions have dramatic effects on the groundstates of rotating atomic Bose gases in the weak interaction limit. With increasing dipolar interaction (relative to the net contact interaction), the mean-field, or high filling fraction, groundstate undergoes a series of transitions between vortex lattices of different symmetries: triangular, square, ``stripe'', and ``bubble'' phases. We also study the effects of dipolar interactions on the quantum fluids at low filling fractions. We show that the incompressible Laughlin state at filling fraction $\nu=1/2$ is replaced by compressible stripe and bubble phases.

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