Abstract
Path-integral Monte Carlo calculations have been used to study He4 clusters at low temperatures. We develop a fluctuation formula for the superfluid fraction in terms of a projected area swept out by a path. Manifestations of superfluid behavior are shown to exist in a cluster of 64 atoms and a remnant of the transition persists in a cluster of 128 atoms. The temperature dependence of the superfluid fraction is similar to that observed in the liquid.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1601-1604 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 63 |
| Issue number | 15 |
| DOIs | |
| State | Published - 1989 |
ASJC Scopus subject areas
- General Physics and Astronomy
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