Circular dichroism of magneto-phonon resonance in doped graphene

Abstract

Polarization resolved, Raman scattering response due to E${}_{2g}$ phonon in monolayer graphene has been investigated in magnetic fields up to 29 T. The hybridization of the E${}_{2g}$ phonon with only the fundamental inter Landau level excitation (involving the n=0 Landau level) is observed and only in one of the two configurations of the circularly crossed polarized excitation and scattered light. This polarization anisotropy of the magneto-phonon resonance is shown to be inherent to relatively strongly doped graphene samples, with carrier concentration typical for graphene deposited on SiO${}_2$.

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• Strong magnetophonon oscillations in extra-large graphene
• Low B Field Magneto-Phonon Resonances in Single-Layer and Bilayer Graphene
• Raman scattering of graphene based systems in high magnetic fields
• Electric field-induced valley degeneracy lifting in uniaxial strained graphene: evidence from magnetophonon resonance
• Electrical Control over Phonon Polarization in Strained Graphene
• Theory of resonant Raman scattering: Toward a comprehensive \textit{ab initio} description
• Charge tuning of non-resonant magneto-exciton phonon interactions in graphene
• Electrical switch to the resonant magneto-phonon effect in graphene
• Time-resolved magneto-Raman study of carrier dynamics in low Landau levels of graphene
• Anomalous circular phonon dichroism in transition metal dichalcogenides
• Symmetry analysis of cross-circular and parallel-circular Raman optical activity