Vortex Dynamics in Superfluid Systems: Cyclotron Type Motion

Details Vortex Dynamics in Superfluid Systems: Cyclotron Type Motion Vortex Dynamics in Superfluid Systems: Cyclotron Type Motion

1996-04-02

arxiv.org/abs/cond-mat/9604010v1

Physics

Condensed Matter

21 pages, 1 figure included

Scientific paper

10.1103/PhysRevB.54.10027

Vortex dynamics in superfluids is investigated in the framework of the nonlinear Schr\"{o}dinger equation. The natural motion of the vortex is of cyclotron type, whose frequency is found to be on the order of phonon velocity divided by the coherence length, and may be heavily damped due to phonon radiation. Trapping foreign particles into the vortex core can reduce the cyclotron frequency and make the cyclotron motion underdamped. The density fluctuations can follow the vortex motion adiabatically within the phonon wave length at the cyclotron frequency, which results in a further downward renormalization of the cyclotron frequency. We have also discussed applications on the dynamics of vortices in superconducting films.

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