Journal of Low Temperature Physics

, Volume 67, Issue 1–2, pp 47–63 | Cite as

Suppression of the critical current and the superfluid transition temperature of3He in a single submicron cylindrical channel

  • J. P. Pekola
  • J. C. Davis
  • Zhu Yu-Qun
  • R. N. R. Spohr
  • P. B. Price
  • R. E. Packard
Article
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Revised:

Abstract

We report on an investigation into confined geometry effects and critical currents of superfluid3He in a single circular cylindrical channel. The diameter of the channel, 0.7 µm, is of the order of the (temperature-dependent) coherence length and its aspect ratio is ∼10. The reduction of the critical temperature demonstrates diffuse scattering on the solid walls of the microchannel. Using the Ginzburg-Landau formulation, we derive a model for the critical current and the critical temperature in a small, infinitely long, cylindrical channel with a circular cross section. The measured reductions of these quantities are in reasonable agreement with the predictions of the model.

Keywords

Coherence Transition Temperature Aspect Ratio Critical Temperature Magnetic Material 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • J. P. Pekola
    • 1
  • J. C. Davis
    • 1
  • Zhu Yu-Qun
    • 1
  • R. N. R. Spohr
    • 1
  • P. B. Price
    • 1
  • R. E. Packard
    • 1
  1. 1.Department of PhysicsUniversity of CaliforniaBerkeley

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