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Quasi one dimensional $^4$He inside carbon nanotubes

M. C. Gordillo·J. Boronat·J. Casulleras
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Abstract

We report results of diffusion Monte Carlo calculations for both $^4$He absorbed in a narrow single walled carbon nanotube (R = 3.42 Å) 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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M. C. Gordillo, J. Boronat, J. Casulleras. 1999-11-04. Quasi one dimensional $^4$He inside carbon nanotubes. https://doi.org/10.1103/physrevb.61.r878

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