Local Superfluidity at the Nanoscale

Abstract

We have performed quantum Monte Carlo simulations measuring the finite size and temperature superfluid response of helium-4 to the linear and rotational motion of the walls of a nanopore. Within the two-fluid model, the portion of the normal liquid dragged along with the boundaries is dependent on the type of motion and the resulting anisotropic superfluid density saturates far below unity at T=0.5 K. The origin of the saturation is uncovered by computing the spatial distribution of superfluidity, with only the core of the nanopore exhibiting any evidence of phase coherence. The superfluid core displays scaling behavior consistent with Luttinger liquid theory, thereby providing an experimental test for the emergence of a one dimensional quantum liquid.

Added a figure and extended discussion

References in corpus (7)

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Cited by in corpus (19)

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• Absence of superfluidity in a quasi one-dimensional parahydrogen fluid adsorbed inside carbon nanotubes
• Ab initio Path Integral Monte Carlo Simulations of Quantum Dipole Systems in Traps: Superfluidity, Quantum Statistics, and Structural Properties
• Superfluid behavior of quasi-1D p-H${}_2$ inside carbon nanotube
• Surface-dominated finite size effects in nanoconfined superfluid helium
• Mass Superflux in Solid Helium: the Role of ${}^3$He Impurities
• Dimensional Reduction of Helium-4 Inside Argon Plated MCM-41 Nanopores
• One Dimensional 1H, 2H and 3H
• Path integral Monte Carlo simulation of global and local superfluidity in liquid ${}^4$He reservoirs separated by nanoscale apertures
• Spatial distribution of superfluidity and superfluid distillation of Bose liquids
• A shell model for superfluids in rough-walled nanopores
• Combining Harmonic Sampling with the Worm Algorithm to Improve the Efficiency of Path Integral Monte Carlo
• Noise and fluctuations in nanoscale gas flow
• Friedel oscillations in one-dimensional 4He
• Accurate Helium-Benzene Potential: from CCSD(T) to Gaussian Process Regression
• Quantum Monte Carlo study of strongly interacting bosonic one-dimensional systems in periodic potentials