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Metastability and superfluid fraction of the A-like and B phases of 3He in aerogel in zero magnetic field

  • Condensed Matter
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Abstract

We report the low-frequency sound measurements of the metastable A-like (A*) phase of superfluid 3He confined within a 98% open aerogel matrix in zero magnetic field. The second soundlike (slow) mode provides an accurate determination of the superfluid fraction of (and the transition between) the A* and B phases. The A* and B phases exhibit stable coexistence in the presence of disorder, the ratio of their superfluid fractions (ρ A*a /ρ Bs ) is much smaller than that of the bulk A and B phases, and argues that the A* and bulk A phases are distinct.

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Authors and Affiliations

  1. Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, USA

    E. Nazaretski & J. M. Parpia

  2. Department of Physics and Astronomy, University of Delaware, Newark, DE, 19716, USA

    N. Mulders

Authors
  1. E. Nazaretski
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  2. N. Mulders
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  3. J. M. Parpia
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Additional information

From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 79, No. 8, 2004, pp. 470–474.

Original English Text Copyright © 2004 by Nazaretski, Mulders, Parpia.

This article was submitted by the authors in English.

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Nazaretski, E., Mulders, N. & Parpia, J.M. Metastability and superfluid fraction of the A-like and B phases of 3He in aerogel in zero magnetic field. Jetp Lett. 79, 383–387 (2004). https://doi.org/10.1134/1.1772437

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  • DOI: https://doi.org/10.1134/1.1772437

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