title: Probing "cosmological" defects in superfluid 3He-B with a vibrating-wire resonator.
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.
authors.affiliation: Centre de Recherches sur les Très Basses Températures, CNRS, Laboratoire associé à l'Université Joseph Fourier, BP166, 38042 Grenoble cedex 9, France.
authors.forename: C B
authors.initials: CB
authors.lastname: Winkelmann
authors.forename: J
authors.initials: J
authors.lastname: Elbs
authors.forename: Yu M
authors.initials: YM
authors.lastname: Bunkov
authors.forename: H
authors.initials: H
authors.lastname: Godfrin