Momentum distribution of helium and hydrogen in nanotubes

S. M. Gatica, Milton Walter Cole, G. Stan, J. M. Hartman, Vincent Henry Crespi

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We compute the momentum distribution of helium atoms and hydrogen molecules absorbed within an ordered bundle of carbon nanotubes. The results vary significantly as a function of coverage and manifest the strong anisotropy and localization of this geometry. For example, the root-mean-square momentum component perpendicular to the bundle axis can be about three times larger for interstitial molecules than for molecules moving in an axial phase confined by a cylindrical film of particles coating the tube's inner wall. These results (which are consequences of the uncertainty principle) indicate that the momentum distribution is a useful signature of the local geometry and quantum state of the absorbed particles in nanotube bundles.

Original languageEnglish (US)
Pages (from-to)9989-9991
Number of pages3
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number15
DOIs
StatePublished - Oct 15 2000

Fingerprint

Helium
Nanotubes
bundles
Hydrogen
nanotubes
Momentum
helium
momentum
Molecules
hydrogen
molecules
Carbon Nanotubes
Geometry
helium atoms
geometry
Carbon nanotubes
interstitials
Anisotropy
carbon nanotubes
signatures

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Gatica, S. M. ; Cole, Milton Walter ; Stan, G. ; Hartman, J. M. ; Crespi, Vincent Henry. / Momentum distribution of helium and hydrogen in nanotubes. In: Physical Review B - Condensed Matter and Materials Physics. 2000 ; Vol. 62, No. 15. pp. 9989-9991.
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Momentum distribution of helium and hydrogen in nanotubes. / Gatica, S. M.; Cole, Milton Walter; Stan, G.; Hartman, J. M.; Crespi, Vincent Henry.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 62, No. 15, 15.10.2000, p. 9989-9991.

Research output: Contribution to journalArticle

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