Phonon dispersion of graphite by inelastic x-ray scattering

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Maultzsch J
Zeitschrift: Physical Review B
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2007
Band: 76
Heftnummer: 3
ISSN: 1098-0121


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 midfrequency range between the K and M points in the Brillouin zone, where the 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 neighbor force-constant model to the experimental data, making improved force-constant calculations of the phonon dispersion in both graphite and carbon nanotubes available.



FAU-Autoren / FAU-Herausgeber

Maultzsch, Janina Prof. Dr.
Lehrstuhl für Experimentalphysik

Zuletzt aktualisiert 2018-07-08 um 16:38