Smooth vortex precession in superfluid 4He

Details Smooth vortex precession in superfluid 4He Smooth vortex precession in superfluid 4He

2001-04-27

arxiv.org/abs/cond-mat/0104525v1

Physics

Condensed Matter

Superconductivity

8 pages, 8 figures

Scientific paper

10.1103/PhysRevB.65.024511

We have measured a precessing superfluid vortex line, stretched from a wire to the wall of a cylindrical cell. By contrast to previous experiments with a similar geometry, the motion along the wall is smooth. The key difference is probably that our wire is substantially off center. We verify several numerical predictions about the motion, including an asymmetry in the precession signature, the behavior of pinning events, and the temperature dependence of the precession.

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