Abstract
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 language | English (US) |
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Pages (from-to) | 1-17 |
Number of pages | 17 |
Journal | Journal of Low Temperature Physics |
Volume | 84 |
Issue number | 1-2 |
DOIs | |
State | Published - Jul 1991 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- General Materials Science
- Condensed Matter Physics