Suppression of the critical current and the superfluid transition temperature of 3He 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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)47-63
Number of pages17
JournalJournal of Low Temperature Physics
Volume67
Issue number1-2
DOIs
Publication statusPublished - Apr 1987
MoE publication typeA1 Journal article-refereed

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