Quantum Fluids in Nanotubes: a Quantum Monte Carlo Approach

Abstract

We review quantum Monte Carlo results on energetic and structure properties of quantum fluids adsorbed in a bundle of carbon nanotubes. Using realistic interatomic interactions the different adsorption sites that a bundle offer are accurately studied and compared in some cases with strictly one-dimensional geometries. The study is performed quite extensively for ${}^4$He and restricted to the inner part of a single nanotube for H${}_2$ and D${}_2$. From a theoretical point of view, nanotubes open the real possibility of a quasi-one-dimensional confinement where to study quantum fluids in extremely reduced dimensionality. The results obtained show that in the narrowest configurations the system is nearly one-dimensional reinforcing the interest on the physics of one-dimensional quantum fluids. Experimental confirmation of the theoretical results obtained is still not in a satisfactory situation due to the difficulties on extracting from the data the dominant adsorption sites.

31 pages, accepted for publication in J. Low Temp. Phys

References in corpus (7)

• 4He on a single graphene sheet
• Phases of Neon, Xenon, and Methane adsorbed on nanotube bundles
• Evidence of 1D behaviour of He${}^4$ confined within carbon-nanotube bundles
• Adsorption of He atoms in external grooves of single wall carbon nanotube bundles
• Isotopic effects of hydrogen adsorption in carbon nanotubes
• H2 in the interstitial channels of nanotube bundles
• 4He adsorbed inside (10,10) single walled carbon nanotubes

Cited by in corpus (3)

• Simulation and understanding of quantum crystals
• A Luttinger Liquid Core Inside Helium-4 Filled Nanopores
• Quantum Monte Carlo study of strongly interacting bosonic one-dimensional systems in periodic potentials