Absence of superfluidity in a parahydrogen film intercalated within a crystal of Na atoms

Abstract

A recent claim of possible superfluid behaviour of parahydrogen films intercalated within a crystalline matrix of Na atoms is examined. Quantum Monte Carlo simulations at finite temperature yield strong numerical evidence that the system forms at low temperature a non-superfluid crystalline phase, commensurate with the underlying impurity lattice. The physics of this system is therefore qualitatively identical to that observed in similar settings, extensively studied in precedence. Comparison of numerical results obtained here, with those of the reference in which the prediction of superfluidity (disproven here) was made, points to likely bias in the computational methodology adopted therein.

Replaced with published version

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Cited by in corpus (11)

• Simulation and understanding of quantum crystals
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• Absence of superfluidity in a quasi one-dimensional parahydrogen fluid adsorbed inside carbon nanotubes
• Superfluid behavior of quasi-1D p-H${}_2$ inside carbon nanotube
• Luttinger parameter of quasi-one-dimensional para-H2
• Superfluid response of parahydrogen clusters in superfluid He-4
• Computer simulation study of nanoscale size parahydrogen clusters
• Quasi-2D parahydrogen: On the verge of turning superfluid?
• Adsorption of parahydrogen on graphene
• Quantum Monte Carlo study of thin parahydrogen films on graphite
• The solid phase of He-4: A Monte Carlo simulation study