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Updated: Aug 7, 2026

Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
Probing "cosmological" defects in superfluid 3He-B with a vibrating-wire resonator
C B Winkelmann1, J Elbs, Yu M Bunkov
1Centre de Recherches sur les Très Basses Températures, CNRS, Laboratoire associé à l'Université Joseph Fourier, BP166, 38042 Grenoble cedex 9, France.
Abstract:
We report on the observation of an anomalously high damping measured by a vibrating-wire resonator (VWR) immersed into superfluid at ultralow temperatures. The observed dissipation is orders of magnitude above that corresponding to friction with the dilute normal fraction and superfluid vortices. A clear pinning behavior is also observed, as well as a strong magnetic field dependence. Our analysis points to the interaction of the VWR with a planar topological defect, analogue to cosmological vacua defects, as proposed by Salomaa and Volovik.
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