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Overbending of the longitudinal optical phonon branch in diamond as evidenced by inelastic neutron and x-ray scattering

Overbending of the longitudinal optical phonon branch in diamond as evidenced by inelastic... Overbending of the longitudinal-optical-phonon branch in diamond has been evidenced along all three principal directions by a joint inelastic neutron and x-ray experiment. The observed overbending of 1.5, 0.5, and 0.2 meV (along the Δ, Λ, and Σ directions, respectively) confirms previous ab initio lattice-dynamics calculations, thus providing experimental proof for the explanation of the anomalous peak in the two-phonon Raman spectrum. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Overbending of the longitudinal optical phonon branch in diamond as evidenced by inelastic neutron and x-ray scattering

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Publisher
American Physical Society (APS)
Copyright
Copyright © 2002 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.66.241202
Publisher site
See Article on Publisher Site

Abstract

Overbending of the longitudinal-optical-phonon branch in diamond has been evidenced along all three principal directions by a joint inelastic neutron and x-ray experiment. The observed overbending of 1.5, 0.5, and 0.2 meV (along the Δ, Λ, and Σ directions, respectively) confirms previous ab initio lattice-dynamics calculations, thus providing experimental proof for the explanation of the anomalous peak in the two-phonon Raman spectrum.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Dec 15, 2002

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