Enhanced superfluid response of parahydrogen in nanoscale confinement

Abstract

Confinement has generally the effect of suppressing order in condensed matter. Indeed, phase transitions such as freezing, or the superfluid transition in liquid helium, occur at lower temperatures in confinement than they do in the bulk. We provide here an illustration of a physical setting in which the opposite takes place. Specifically, the enhancement of the superfluid response of parahydrogen confined to nanoscale size cavities is demonstrated by means of first principle computer simulations. Prospects to stabilize and observe the long sought but yet elusive bulk superfluid phase of parahydrogen in purposefully designed porous media are discussed.

5 pages, 4 figures in color

References in corpus (4)

• Worm Algorithm and Diagrammatic Monte Carlo: A New Approach to Continuous-Space Path Integral Monte Carlo Simulations
• Superfluidity and Quantum Melting of para-Hydrogen clusters
• Helium-4 Luttinger liquids in nanopores
• Search for Superfluidity in Solid Hydrogen

Cited by in corpus (4)

• Absence of superfluidity in a quasi one-dimensional parahydrogen fluid adsorbed inside carbon nanotubes
• Quasi-one-dimensional ${}^4$He in nanopores
• Microscopic pair potentials and the physical properties of the condensed phase of parahydrogen
• Superfluid response of two-dimensional parahydrogen clusters in confinement