Disorder and the elusive superfluid phase of para-hydrogen
arXiv:0807.2210 · doi:10.1103/PhysRevB.78.144509
Abstract
The possibility that disorder may stabilize a superfluid phase of para-hydrogen in two dimensions is investigated theoretically by means of Quantum Monte Carlo simulations. We model disorder using a random distribution of scatterers, and study the thermodynamic behavior of the system as a function of the scatterer density. Disorder gives rise to equilibrium glassy phases with no superfluid properties. Indeed, the propensity for quantum exchanges of hydrogen molecules is reduced even with respect to what is observed if the scatterers are arranged as a regular crystal, a physical setting that also yields no superfluidity.
arXiv comment8 pages, 5 figures
References in corpus (12)
- Worm Algorithm and Diagrammatic Monte Carlo: A New Approach to Continuous-Space Path Integral Monte Carlo Simulations
- Worm Algorithm for Continuous-space Path Integral Monte Carlo Simulations
- Luttinger Liquid in the Core of Screw Dislocation in Helium-4
- Superglass Phase of Helium-four
- On the Supersolid State of Matter
- Superfluidity of Grain Boundaries in Solid Helium-4
- Superfluidity and Quantum Melting of para-Hydrogen clusters
- Local Superfluidity of Parahydrogen Clusters
- Low temperature phase diagram of condensed para-Hydrogen in two dimensions
- Melting of a p-H2 monolayer on a lithium substrate
- Variational Monte Carlo study of the ground state properties and vacancy formation energy of solid para-H2 using a shadow wave function
- Molecular hydrogen isotopes adsorbed on krypton-preplated graphite: Quantum Monte Carlo simulations
Cited by in corpus (13)
- On the possible "supersolid" character of parahydrogen clusters
- Disorder-induced superfluidity
- Search for superfluidity in supercooled liquid parahydrogen
- Absence of superfluidity in a quasi one-dimensional parahydrogen fluid adsorbed inside carbon nanotubes
- Absence of superfluidity in a parahydrogen film intercalated within a crystal of Na atoms
- Superfluid behavior of quasi-1D p-H inside carbon nanotube
- Superfluid response of parahydrogen clusters in superfluid He-4
- Systematics of small parahydrogen clusters in two dimensions
- Computer simulation study of nanoscale size parahydrogen clusters
- Adsorption of parahydrogen on graphene
- Quasi-2D parahydrogen: On the verge of turning superfluid?
- Quantum Monte Carlo study of thin parahydrogen films on graphite
- Superfluid response of two-dimensional parahydrogen clusters in confinement