Phonon dispersion of graphite by inelastic x-ray scattering

被引：375

作者：

Mohr, M.

Maultzsch, J.

Dobardzic, E.

Reich, S.

Milosevic, I.

Damnjanovic, M.

Bosak, A.

Krisch, M.

Thomsen, C.

机构：

[1] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

[2] Univ Belgrade, Fac Phys, Belgrade 11011, Serbia

[3] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[4] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.76.035439

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

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页数：7

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