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Phys. Rev. Lett. 101, 065507 (2008) [4 pages]

How Confinement Affects the Dynamics of C60 in Carbon Nanopeapods

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S. Rols1,*, J. Cambedouzou2, M. Chorro2, H. Schober1, V. Agafonov3, P. Launois2, V. Davydov4, A. V. Rakhmanina4, H. Kataura5, and J.-L. Sauvajol6
1Institut Laue Langevin, F-38042 Grenoble, France
2Laboratoire de Physique des Solides UMR 8502, Université Paris-Sud, F-91405 Orsay, France
3Laboratoire d’Electrodynamique des Matériaux Avancés, UMR CNRS-CEA 6157, F-37200 Tours, France
4Institute of High Pressure Physics of the RAS, R-142092 Troitsk, Moscow Region, Russian Federation
5Nanotechnology Research Institute, National Institute of Advanced Industrial Science (AIST), Central 4, Higashi1-1-1, Tsukuba 305-8562, Japan
6Laboratoire des Colloïdes, Verres et Nanomatériaux (UMR CNRS 5587), Université Montpellier II, F-34095 Montpellier Cedex 5, France

Received 24 December 2007; revised 1 June 2008; published 8 August 2008

The dynamics of confined systems is of major concern for both fundamental physics and applications. In this Letter, the dynamics of C60 fullerene molecules inside single walled carbon nanotubes is studied using inelastic neutron scattering. We identify the C60 vibrations and highlight their sensitivity to temperature. Moreover, a clear signature of rotational diffusion of the C60 is evidenced, which persists at lower temperature than in 3D bulk C60. It is discussed in terms of confinement and of reduced dimensionality of the C60 chain.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.065507
DOI:
10.1103/PhysRevLett.101.065507
PACS:
63.22.−m, 63.22.Gh, 64.70.kt

*Also at Laboratoire des Colloïdes, Verres et Nanomatériaux (UMR CNRS 5587), Université Montpellier II, F-34095 Montpellier Cedex 5, France.

 
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