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

2014/06/17 by Eddwi H. Hasdeo, Ahmad R. T. Nugraha, M. S. Dresselhaus +2 · 99 citations
Chemistry · Engineering · Materials Science · Mathematics · Physics and Astronomy · #Condensed matter physics #Fano plane #Fullerene Chemistry and Applications #Geometry #Graphene #Graphene and Nanomaterials Applications #Graphene research and applications #Line (geometry) #Materials science #Mathematics #Molecular physics #Physics #Quantum mechanics #Raman spectroscopy #Spectral line #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.90.245140

published in Physical Review B 90(24) (American Physical Society) · 15 pages, 4 figures

arxiv created 2014/06/17 · openalex publication_date 2014/12/23 · arxiv updated 2015/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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/q_BWF 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.

Citations

• Dielectric function, screening, and plasmons in two-dimensional graphene
• Excitonic Effects on the Optical Response of Graphene and Bilayer Graphene
• Raman spectroscopy of graphene and carbon nanotubes
• Electric Field Effect in Atomically Thin Carbon Films
• Effects of Configuration Interaction on Intensities and Phase Shifts