N ov 1 99 9 Quasi one dimensional 4 He inside carbon nanotubes
نویسندگان
چکیده
We report results of diffusion Monte Carlo calculations for both 4 He absorbed in a narrow single walled carbon nanotube (R = 3.42Å) and strictly one dimensional 4 He. Inside the tube, the binding energy of liquid 4 He is approximately three times larger than on planar graphite. At low linear densities , 4 He in a nanotube is an experimental realization of a one-dimensional quantum fluid. However, when the density increases the structural and energetic properties of both systems differ. At high density, a quasi-continuous liquid-solid phase transition is observed in both cases.
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