Suppression of the critical current and the superfluid transition temperature of3He in a single submicron cylindrical channel
Pekola, J. P. ; Davis, J. C. ; Yu-Qun, Zhu ; Spohr, R. N. R. ; Price, P. B. ; Packard, R. E.
Springer
Published 1987
Springer
Published 1987
| ISSN: |
1573-7357
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
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.
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| Type of Medium: |
Electronic Resource
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| URL: |