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 | |
| Publication status | Published - 1990 |
| Externally published | Yes |
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Size-dependent Kosterlitz-Thouless superfluid transition in thin He4 films adsorbed on porous glasses. / Shirahama, Keiya; Kubota, M.; Ogawa, S.; Wada, N.; Watanabe, T.
In: Physical Review Letters, Vol. 64, No. 13, 1990, p. 1541-1544.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Size-dependent Kosterlitz-Thouless superfluid transition in thin He4 films adsorbed on porous glasses
AU - Shirahama, Keiya
AU - Kubota, M.
AU - Ogawa, S.
AU - Wada, N.
AU - Watanabe, T.
PY - 1990
Y1 - 1990
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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U2 - 10.1103/PhysRevLett.64.1541
DO - 10.1103/PhysRevLett.64.1541
M3 - Article
AN - SCOPUS:0001049454
VL - 64
SP - 1541
EP - 1544
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 13
ER -