Breit-Wigner-Fano line shapes in Raman spectra of graphene

Eddwi H. Hasdeo, Ahmad R.T. Nugraha, Mildred S. Dresselhaus, Riichiro Saito

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Excitation of electron-hole pairs in the vicinity of the Dirac cone by the Coulomb interaction gives rise to an asymmetric Breit-Wigner-Fano line shape in the phonon Raman spectra in graphene. This asymmetric line shape appears due to the interference effect between the phonon spectra and the electron-hole pair excitation spectra. The calculated Breit-Wigner-Fano asymmetric factor 1/qBWF as a function of the Fermi energy shows a V-shaped curve with a minimum value at the charge neutrality point and gives good agreement with the experimental results.

Original languageEnglish
Article number245140
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number24
DOIs
Publication statusPublished - 2014 Dec 23

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Breit-Wigner-Fano line shapes in Raman spectra of graphene'. Together they form a unique fingerprint.

Cite this