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 Jan 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Shirahama, K., Kubota, M., Ogawa, S., Wada, N., & Watanabe, T. (1990). Size-dependent Kosterlitz-Thouless superfluid transition in thin He4 films adsorbed on porous glasses. Physical review letters, 64(13), 1541-1544. https://doi.org/10.1103/PhysRevLett.64.1541