Path-integral calculation of the two-dimensional 4He phase diagram
Path-integral Monte Carlo simulations have been used to determine the phase diagram of a two-dimensional 4He film in a range of temperatures and coverages where it undergoes solidification, superfluidity, and a liquid-gas transition (0.25K<~T<~1.5K¿0<¿<0.094¿Å-2). We determine the phase-...
| Autores: | , |
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| Formato: | artículo |
| Fecha de publicación: | 1998 |
| País: | España |
| Recursos: | Universidad Pablo de Olavide (UPO) |
| Repositorio: | RIO. Repositorio Institucional Olavide |
| Idioma: | inglés |
| OAI Identifier: | oai:rio.upo.es:10433/917 |
| Acesso em linha: | http://hdl.handle.net/10433/917 |
| Access Level: | acceso abierto |
| Palavra-chave: | Monte Carlo simulations Solidification Superfluidity |
| Resumo: | Path-integral Monte Carlo simulations have been used to determine the phase diagram of a two-dimensional 4He film in a range of temperatures and coverages where it undergoes solidification, superfluidity, and a liquid-gas transition (0.25K<~T<~1.5K¿0<¿<0.094¿Å-2). We determine the phase-transition densities and give the coefficients for a functional form of the free energy in the liquid, solid, and gas phases. The phase diagram is similar to the one determined from experimental measurements of a second layer of helium on graphite. |
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