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Quantum Confinement and Fullerenelike Surface Reconstructions in Nanodiamonds

Jean-Yves Raty, Giulia Galli, C. Bostedt, Tony W. van Buuren, and Louis J. Terminello
Phys. Rev. Lett. 90, 037401 – Published 24 January 2003
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Abstract

We present x-ray absorption and emission experiments and calculations showing that the size of carbon diamond must be reduced to at least 2 nm, in order to observe an increase of its optical gap, at variance with Si and Ge where quantum confinement effects persist up to 6–7 nm. In addition, our calculations show that the surface of nanodiamond particles larger than reconstructs in a fullerenelike manner, giving rise to a new family of carbon clusters: bucky diamonds. Signatures of these surface reconstructions are compatible with pre-edge features observed in measured absorption spectra.

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  • Received 31 May 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.037401

Authors & Affiliations

Jean-Yves Raty1,2, Giulia Galli1, C. Bostedt1, Tony W. van Buuren1, and Louis J. Terminello1

  • 1Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550
  • 2University of Liege B5, B4000 Sart-Tilman, Belgium

See Also

Bucky Diamonds In The Rough

Pam Frost Gorder
Phys. Rev. Focus 11, 4 (2003)

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Issue

Vol. 90, Iss. 3 — 24 January 2003

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