Size-dependent Kosterlitz-Thouless superfluid transition in thin He4 films adsorbed on porous glasses

K. Shirahama; M. Kubota; S. Ogawa; N. Wada; T. Watanabe

doi:10.1103/PhysRevLett.64.1541

Size-dependent Kosterlitz-Thouless superfluid transition in thin He4 films adsorbed on porous glasses

K. Shirahama, M. Kubota, S. Ogawa, N. Wada, T. Watanabe

Research output: Contribution to journal › Article › peer-review

82 Citations (Scopus)

Abstract

We report the first quantitative study of the size-dependent suprefluid transition in He4 films adsorbed on porous glasses with pore diameters d from 50 to 10 000. Tc for the submonolayer films decreases as d increases up to d=2900, whereas Tc for the full-pore liquid increases with d. The d dependence of Tc and the dissipation at the transition for the films reveal that the vortex-pair unbinding on length scales smaller than the pore sizes determines the superfluid transition. We obtain the diameter of vortex core a0=25±12 from the fit by letting the 2D coherence length 2+(Tc)=d/2. AE

Original language	English
Pages (from-to)	1541-1544
Number of pages	4
Journal	Physical review letters
Volume	64
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.64.1541
Publication status	Published - 1990 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Size-dependent Kosterlitz-Thouless superfluid transition in thin He4 films adsorbed on porous glasses",

abstract = "We report the first quantitative study of the size-dependent suprefluid transition in He4 films adsorbed on porous glasses with pore diameters d from 50 to 10 000. Tc for the submonolayer films decreases as d increases up to d=2900, whereas Tc for the full-pore liquid increases with d. The d dependence of Tc and the dissipation at the transition for the films reveal that the vortex-pair unbinding on length scales smaller than the pore sizes determines the superfluid transition. We obtain the diameter of vortex core a0=25±12 from the fit by letting the 2D coherence length 2+(Tc)=d/2. AE",

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T1 - Size-dependent Kosterlitz-Thouless superfluid transition in thin He4 films adsorbed on porous glasses

AU - Shirahama, K.

AU - Kubota, M.

AU - Ogawa, S.

AU - Wada, N.

AU - Watanabe, T.

PY - 1990/1/1

Y1 - 1990/1/1

N2 - We report the first quantitative study of the size-dependent suprefluid transition in He4 films adsorbed on porous glasses with pore diameters d from 50 to 10 000. Tc for the submonolayer films decreases as d increases up to d=2900, whereas Tc for the full-pore liquid increases with d. The d dependence of Tc and the dissipation at the transition for the films reveal that the vortex-pair unbinding on length scales smaller than the pore sizes determines the superfluid transition. We obtain the diameter of vortex core a0=25±12 from the fit by letting the 2D coherence length 2+(Tc)=d/2. AE

AB - We report the first quantitative study of the size-dependent suprefluid transition in He4 films adsorbed on porous glasses with pore diameters d from 50 to 10 000. Tc for the submonolayer films decreases as d increases up to d=2900, whereas Tc for the full-pore liquid increases with d. The d dependence of Tc and the dissipation at the transition for the films reveal that the vortex-pair unbinding on length scales smaller than the pore sizes determines the superfluid transition. We obtain the diameter of vortex core a0=25±12 from the fit by letting the 2D coherence length 2+(Tc)=d/2. AE

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