Abstract
We study the structure and the spectrum of elementary excitations of films of He4 atoms adsorbed to plane substrates of varying strengths. An optimized variational description of the ground-state wave function provides the short- and long-ranged structure, the distribution functions, the dispersion relations, and the spatial shape of the collective modes.
| Original language | English |
|---|---|
| Pages (from-to) | 1666-1679 |
| Number of pages | 14 |
| Journal | Physical Review B-Condensed Matter |
| Volume | 37 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1988 |
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