Superfluidity of 4He adsorbed on nanoporous activated carbon fibers

Yoshiyuki Shibayama, Keiya Shirahama

研究成果: Article査読

1 被引用数 (Scopus)

抄録

4He confined in nanoporous media is one of the most interesting nano-sized systems in the context of an interacting Bose system. In the present work, we study superfluidity of 4He adsorbed in nanoporous activated carbon fibers (ACFs). Up to a 4He coverage of n = 22.6 μmol m -2, no superfluidity is observed. Over 23.7 μmol m -2, superfluid transition is observed at T c ∼ 550 mK. With an increase in n the superfluid density enhances, but T c is independent of n. These observations indicate that the thickness of the superfluid 4He films on the pore wall is restricted by a slit type pore shape of ACFs.

本文言語English
ページ(範囲)809-813
ページ数5
ジャーナルJournal of Low Temperature Physics
148
5-6
DOI
出版ステータスPublished - 2007 9月

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 材料科学(全般)
  • 凝縮系物理学

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