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Experimental status of the ac Josephson effect in liquid helium

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Abstract

The presence of an ac sound field causes several distinct effects in a system of two baths of superfluid liquid helium which are coupled by a small orifice. The primary effects of the sound field can be classified as a “Z-ΔT structure,” “steps,” and “anomalies.” Each of these three effects has been subjected to various criteria which are necessary for an interpretation in terms of the ac Josephson effect. These three effects failed the criteria which were applied, and therefore they are not due to the Josephson effect. However, it is shown that the properties of these three effects correlate quite well with the expected properties of first-sound resonances within one of the two liquid baths.

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Author notes

  1. D. L. Musinski

    Present address: School of Applied and Engineering Physics, Cornell University, Ithaca, New York

Authors and Affiliations

  1. Department of Physics and Astronomy, University of Rochester, Rochester, New York

    D. L. Musinski

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  1. D. L. Musinski
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Financial support was provided in part by the National Science Foundation.

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Musinski, D.L. Experimental status of the ac Josephson effect in liquid helium. J Low Temp Phys 13, 287–311 (1973). https://doi.org/10.1007/BF00654068

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  • DOI: https://doi.org/10.1007/BF00654068

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