Determination of two-dimensional phonon dispersion relation of graphite by Raman spectroscopy

A. Grüneis, R. Saito, T. Kimura, L. G. Cançado, M. A. Pimenta, A. Jorio, A. G. Souza Filho, G. Dresselhaus, M. S. Dresselhaus

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

Phonon dispersion relations of a two-dimensional (2D) graphite are obtained by fitting dispersive Raman modes that originate from nonzone center phonons near the Γ or Kappa; point in the Brillouin zone (BZ). A new set of 12 force constants of 2D graphite up to the fourth neighbor are determined by a self-consistent fitting procedure, combined with double-resonance Raman theory. Analytical expressions for eigenvalues and eigen-vectors at high symmetry points of the BZ are presented.

Original languageEnglish
Article number155405
Pages (from-to)1554051-1554057
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number15
DOIs
Publication statusPublished - 2002 Apr 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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