Noncondensation of a4He submonolayer film

E. Cheng, Milton W. Cole, Peter B. Shaw

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


A4He film may be modeled only approximately as a two-dimensional (2D) system. This paper calculates the energy shift due to motion in the third dimension, the z direction perpendicular to the surface. Special attention is paid to the question of whether the ground-state solution of this quasi-2D problem is a liquid (as is that of the 2D problem) or a gas. The z motion has substantial effects in the case of weak-binding surfaces, for which numerical results are obtained. An assessment is made of the various approaches used: perturbation theory and variational, adiabatic, and effective potential methods.

Original languageEnglish (US)
Pages (from-to)49-65
Number of pages17
JournalJournal of Low Temperature Physics
Issue number1-2
StatePublished - Jan 1991

All Science Journal Classification (ASJC) codes

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


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