Anisotropic Condensation of Helium in Nanotube Bundles

Abstract

Helium atoms are strongly attracted to the interstitial channels within a bundle of carbon nanotubes. The strong corrugation of the axial potential within a channel can produce a lattice gas system where the weak mutual attraction between atoms in neighboring channels of a bundle induces condensation into a remarkably anisotropic phase with very low binding energy. We estimate the binding energy and critical temperature for 4He in this novel quasi-one-dimensional condensed state. At low temperatures, the specific heat of the adsorbate phase (fewer than 2% of the total number of atoms) greatly exceeds that of the host material.

8 pages, 3 figures, submitted to PRL (corrected typo in abstract)

Cited by in corpus (30)

• Quantized phonon specrum of single-wall carbon nanotubes
• Uptake of gases in bundles of carbon nanotubes
• Quasi-one and two-dimensional transitions of gases adsorbed on nanotube bundles
• Helium-4 Luttinger liquids in nanopores
• Raman spectroscopy on carbon nanotubes at high pressure
• Novel Phases and Reentrant Melting of Two Dimensional Colloidal Crystals
• Evidence of 1D behaviour of He${}^4$ confined within carbon-nanotube bundles
• Many-body interactions among adsorbed atoms and molecules within carbon nanotubes and in free space
• The difference of boundary effects between Bose and Fermi systems
• Isotopic and spin selectivity of H_2 adsorbed in bundles of carbon nanotubes
• Phonons and specific heat of linear dense phases of atoms physisorbed in the grooves of carbon nanotube bundles
• Isotopic effects of hydrogen adsorption in carbon nanotubes
• Lattice model of gas condensation within nanopores
• Vibrations of a chain of Xe atoms in a groove of carbon nanotube bundle
• Lattice-gas Monte Carlo study of adsorption in pores
• Bose-Einstein Condensation of Helium and Hydrogen inside Bundles of Carbon Nanotubes
• Quantum virial expansion approach to thermodynamics of ${}^4$He adsorbates in carbon nanotube materials: Interacting Bose gas in one dimension
• Quantum states and specific heat of low-density He gas adsorbed within the carbon nanotube interstitial channels: Band structure effects and potential dependence
• A Luttinger Liquid Core Inside Helium-4 Filled Nanopores
• Adsorption of ${}^4$He on a single C${}_{60}$
• Commensurate-incommensurate solid transition in the ${}^4$He monolayer on $\gamma$-graphyne
• Quantum phenomena in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 3He. A giant isotope effect
• Quasi-one-dimensional ${}^4$He in nanopores
• Quantum Fluids in Nanotubes: a Quantum Monte Carlo Approach
• Curvature effects on the surface thickness and tension at the free interface of ${}^4$He systems
• Surface phase transitions in one-dimensional channels arranged in a triangular cross-sectional structure: Theory and Monte Carlo simulations
• Ground-state properties of one-dimensional matter and quantum dissociation of a Luttinger liquid
• Uniaxial modulation and the Berezinskii-Kosterlitz-Thouless transition
• Phonon Modes and Heat Capacity of Monolayer Films Adsorbed in Spherical Pores
• Theory of cooling by flow through narrow pores