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Temperature dependence of the superfluid density in restricted geometries determined by an oscillating U-tube technique

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Abstract

The temperature dependence of the superfluid density of4He in restricted geometries has been determined at temperatures ranging from 66 mK to 1.7 K by use of an oscillating U-tube technique. Compressed powders were used to produce geometries with pore radii from about 10 to 20 Å. In contrast with bulk helium, an appreciable variation in the superfluid mass is observed down to temperatures as low as 66 mK. For the geometries investigated the superfluid density displays a linear temperature dependence for temperatures less than about 0.6 K.

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Authors and Affiliations

  1. Laboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York

    S. W. Schwenterly, F. Pobell & J. D. Reppy

  2. Oak Ridge National Laboratory, Oak Ridge, Tennessee

    S. W. Schwenterly

  3. IFF/KFA, Jülich, Germany

    F. Pobell

Authors
  1. S. W. Schwenterly
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  2. F. Pobell
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  3. J. D. Reppy
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Additional information

Work supported in part by the National Science Foundation under Grant Number GH-37658, and by the National Science Foundation under Grant Number GH-33637, through the Cornell Materials Science Center, MSC Report # 2308.

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Schwenterly, S.W., Pobell, F. & Reppy, J.D. Temperature dependence of the superfluid density in restricted geometries determined by an oscillating U-tube technique. J Low Temp Phys 27, 45–74 (1977). https://doi.org/10.1007/BF00654637

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  • DOI: https://doi.org/10.1007/BF00654637

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