Second sound in metastable and phase-separated 43He mixtures

J. Bodensohn and P. Leiderer
Phys. Rev. Lett. 65, 1368 – Published 10 September 1990
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Abstract

Propagation of second sound has been used to study superfluid 43He mixtures quenched into nonequilibrium states inside the miscibility gap. From the results for the second-sound velocity we conclude that the superfluid density in the metastable state is well described by extrapolation from equilibrium values. The attenuation of the second-sound amplitude displays a sharp increase as nucleation sets in at the cloud point, and during the subsequent coarse-graining process it varies in proportion to the total surface area of the droplets.

  • Received 18 December 1989

DOI:https://doi.org/10.1103/PhysRevLett.65.1368

©1990 American Physical Society

Authors & Affiliations

J. Bodensohn

  • Institut für Physik, Johannes Gutenberg Universität, Mainz, Federal Republic of Germany

P. Leiderer

  • Fakultät für Physik, Universität Konstanz, Federal Republic of Germany

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Vol. 65, Iss. 11 — 10 September 1990

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