Anomalous suppression of superfluidity for 4He in Gelsil glass

Kouetsu Mikami, Toshiaki Kobayashi, Junko Taniguchi, Masaru Suzuki, Keiya Shirahama

Research output: Contribution to journalConference articlepeer-review

Abstract

We have studied the superfluid behavior of liquid 4He confined in three samples of Gelsil glass, whose pore size distribution was examined by measuring N2 pressure isotherm. It was found that the superfluid transition temperature under the saturation vapor pressure is 1.37 K for one of the samples whose pore size ranges up to around 6 nm, while it is 0.83 K for another one in which the distribution of pore size is small above 4 nm. Both of the samples have a bottleneck structure of the same size. These results demonstrate that the suppression of superfluidity is related to the pore size distribution rather than the size of the neck.

Original languageEnglish
Article number012048
JournalJournal of Physics: Conference Series
Volume400
Issue numberPART 1
DOIs
Publication statusPublished - 2012
Event26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: 2011 Aug 102011 Aug 17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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