Zero-point vibrational energy of an adsorbed film

James F. Annett, Milton W. Cole, Peter B. Shaw, Richard M. Stratt

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The ground-state energy of a submonolayer4He film is studied, taking into account vibration perpendicular to the surface. We use an adiabatic approximation that evaluates the z motion with the surface-parallel coordinates x, y of the atoms held fixed. The coupled atoms' dynamical equations are solved using various assumptions, all of which yield a similar result. The numerical results for the zero point energy indicate that4He does not form a 2D liquid at zero temperature on K, Rb, or Cs surfaces; instead it is a quantum gas.

Original languageEnglish (US)
Pages (from-to)1-17
Number of pages17
JournalJournal of Low Temperature Physics
Issue number1-2
StatePublished - Jul 1991

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics


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