Abstract
We report on torsional oscillator studies of superfluidity in the second and higher layers of He4 films adsorbed on basal plane graphite. Our measurements reveal several novel features. We observe a reentrant superfluid phase in the second layer of adsorbed helium. Superfluidity disappears before the completion of the second layer and reappears early in the third layer. A well-defined plateau in the transition temperature occurs at the beginning of the fourth layer.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3291-3294 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 70 |
| Issue number | 21 |
| DOIs | |
| State | Published - 1993 |
| Externally published | Yes |