Quasi-two-dimensional imperfect Bose gas adsorbed on a surface

E. Cheng, Milton Walter Cole

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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 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.

Original languageEnglish (US)
Pages (from-to)3960-3965
Number of pages6
JournalPhysical Review B
Issue number7
StatePublished - Jan 1 1990

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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