%0 Journal Article 
%A Gordillo, M.C.
%T He4 Adsorbed on the Outer Surface of Carbon Nanotube Bundles
%D 2008
%@ 0031-9007
%U http://hdl.handle.net/10433/934
%X The results of diffusion Monte Carlo calculations on the behavior of He4 adsorbed on the external surface of a bundle of carbon nanotubes are presented. The corrugation effects are found to be very important, making the outside part of the bundles a quite inhomogeneous substrate. No stable solid helium monolayer at high density was found. Instead, helium atoms are promoted to a second quasi-one-dimensional phase on top of the liquid first layer. On increasing the helium intake, a two layer structure is formed in which the helium directly in contact with the carbon surface solidifies.
%K Monte Carlo calculations
%K Carbon nanotubes
%~ GOEDOC, SUB GOETTINGEN