4He adsorbed outside a single carbon nanotube

Abstract

The phase diagrams of ${}^4$He adsorbed on the external surfaces of single armchair carbon nanotubes with radii in the range 3.42 -- 10.85 Å\ are calculated using the diffusion Monte Carlo method. For nanotubes narrower than a (10,10) one, the ground state is an incommensurate solid similar to the one found for H${}_2$ on the same substrates. For wider nanotubes, the phase with the minimum energy per particle is a liquid layer. Curved $\sqrt{3}\times \sqrt{3}$ registered solids similar to the ones found on graphene and graphite were unstable for all the tubes considered.

6 pages, accepted for publication in Phys. Rev. B

References in corpus (4)

• Phase transitions on the surface of a carbon nanotube
• 4He on a single graphene sheet
• 4He adsorbed inside (10,10) single walled carbon nanotubes
• Phase transitions of H2 adsorbed on the surface of single carbon nanotubes

Cited by in corpus (4)

• Layering transitions in superfluid helium adsorbed on a carbon nanotube mechanical resonator
• Atomic monolayer deposition on the surface of nanotube mechanical resonators
• Phases of ${}^4$He and H${}_2$ adsorbed on a single carbon nanotube
• Third sound measurements of superfluid ${}^4$He films on multiwall carbon nanotubes below 1K