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arXiv · 0705.2418

The phonon dispersion of graphite by inelastic x-ray scattering

M. Mohr·J. Maultzsch·E. Dobardzic·S. Reich·I. Milosevic·M. Damnjanovic·A. Bosak·M. Krisch·C. Thomsen
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Abstract

We present the full in-plane phonon dispersion of graphite obtained from inelastic x-ray scattering, including the optical and acoustic branches, as well as the mid-frequency range between the $K$ and $M$ points in the Brillouin zone, where experimental data have been unavailable so far. The existence of a Kohn anomaly at the $K$ point is further supported. We fit a fifth-nearest neighbour force-constants model to the experimental data, making improved force-constants calculations of the phonon dispersion in both graphite and carbon nanotubes available.

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M. Mohr, J. Maultzsch, E. Dobardzic, S. Reich, I. Milosevic, M. Damnjanovic, A. Bosak, M. Krisch, C. Thomsen. 2007-05-16. The phonon dispersion of graphite by inelastic x-ray scattering. https://doi.org/10.1103/physrevb.76.035439

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