He-4 adsorbed outside a single carbon nanotube

Article

关键词: HEAT-CAPACITY;    MONTE-CARLO;    BUNDLES;    ADSORPTION;    GRAPHITE;    SURFACE;    GASES;    PORES;    H-2;   

DOI  :  10.1103/PhysRevB.86.165409

来源: SCIE

【 摘 要 】

The phase diagrams of He-4 adsorbed on the external surfaces of single armchair carbon nanotubes with radii in the range 3.42-10.85 angstrom 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. Forwider nanotubes, the phase with theminimum energy per particle is a liquid layer. Curvedv root 3 x root 3 registered solids similar to the ones found on graphene and graphite were unstable for all the tubes considered.

【 授权许可】

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