| Autor: |
Milton Walter Cole, E. Cheng |
| Rok vydání: |
1990 |
| Předmět: |
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| Zdroj: |
Physical review. B, Condensed matter. 42(7) |
| ISSN: |
0163-1829 |
| Popis: |
We study a submonolayer film adsorbed on a substrate surface as a quasi-two-dimensional (2D) imperfect Bose gas. The ground-state energy and the depletion fraction at zero temperature are calculated. It is found that the depletion is {ital independent} of the 2D density (in contrast to the 3D case), but is a monotonically increasing function of the substrate potential well depth. Qualitative conclusions are drawn about implications for superfluidity in the case of He on a weak-binding substrate. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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