Has Two-Dimensional Superfluidity Been Seen in RealFilms?
- 23 October 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 41 (17), 1178-1181
- https://doi.org/10.1103/physrevlett.41.1178
Abstract
The theory of two-dimensional superfluidity by Nelson and Kosterlitz is examined in the context of ideal interacting films. It is shown that superfluid onset in a film on a uniform surface would have a critical-temperature gap due to phase condensation. No experiments on uniform or heterogeneous substrates have disclosed any gap, indicating that superfluid onset in experimental films may have another origin.
Keywords
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