Phase diagram of second layer of helium adsorbed on graphite
Condensed Matter
2009-10-31 v2
Abstract
Using realistic helium-helium and helium-graphite interactions and the path integral Monte Carlo method, we are able to identify the gas, superfluid liquid, commensurate-solid, and incommensurate-solid phases, and the coexistence regions between them, for the second layer of helium on graphite. The phase boundaries and the specific heat that we determine are in good agreement with experiment. The appearance and disappearance of superfluidity with increasing coverage can be explained by the growth of coexistence phases, as was observed by torsional oscillator experiments.
Cite
@article{arxiv.cond-mat/9802173,
title = {Phase diagram of second layer of helium adsorbed on graphite},
author = {Marlon Pierce and Efstratios Manousakis},
journal= {arXiv preprint arXiv:cond-mat/9802173},
year = {2009}
}
Comments
4 pages, revtex, 4 postscript figures; minor corrections to text, figures. Accepted for publication in Phys. Rev. Lett