Quantum Films Adsorbed on Graphite: Third and Fourth Helium Layers

Abstract

Using a path-integral Monte Carlo method for simulating superfluid quantum films, we investigate helium layers adsorbed on a substrate consisting of graphite plus two solid helium layers. Our results for the promotion densities and the dependence of the superfluid density on coverage are in agreement with experiment. We can also explain certain features of the measured heat capacity as a function of temperature and coverage.

13 pages in the Phys. Rev. two-column format, 16 Figures

References in corpus (4)

• Path integral Monte Carlo simulation of the second layer of helium-4 adsorbed on graphite
• Monolayer Solid Helium-4 Clusters on Graphite
• Phase diagram of second layer of helium adsorbed on graphite
• The Role of Substrate Corrugations in Helium Monolayer Solidification

Cited by in corpus (3)

• Liquid and solid phases of 3He on graphite
• On the existence of supersolid helium-4 monolayer films
• Quantum simulation of 3He impurities and of 4He interstitials in solid 4He