Dynamics of He atoms adsorbed on a carbon nanotube

Dynamics of He atoms adsorbed on a carbon nanotube

The spectrum of a helium atom adsorbed on an armchair single-walled carbon nanotube is calculated. It is shown that a helium adatom tunnels over the surface of the nanotube within a band of width 10 K (for 4He) to 14 K (for 3He). The undersaturated system of helium adatoms on nanotubes can be used f...

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Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2011-06, Vol.37 (6), p.547-549
Hauptverfasser: Strzhemechny, Mikhail A., Legchenkova, Irina V.
Format: Artikel
Sprache:eng
Schlagworte:
helium
isotope effects
quantum effects
radial thermal expansion
single-walled carbon nanotube
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Zusammenfassung:The spectrum of a helium atom adsorbed on an armchair single-walled carbon nanotube is calculated. It is shown that a helium adatom tunnels over the surface of the nanotube within a band of width 10 K (for 4He) to 14 K (for 3He). The undersaturated system of helium adatoms on nanotubes can be used for studying quantum transport. The dynamics of this system can also be an important contributor to the large negative expansion coefficients of nanotube bundles with adsorbed helium.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.3624785