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arXiv · 2310.09188

Theory of infrared double-resonance Raman spectrum in graphene: the role of the zone-boundary electron-phonon enhancement

Lorenzo Graziotto·Francesco Macheda·Thibault Sohier·Matteo Calandra·Francesco Mauri
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Abstract

We theoretically investigate the double-resonance Raman spectrum of monolayer graphene down to infrared laser excitation energies. By using first-principles density functional theory calculations, we improve upon previous theoretical predictions based on conical models or tight-binding approximations, and rigorously justify the evaluation of the electron-phonon enhancement found in Ref. [Venanzi, T., Graziotto, L. et al., Phys. Rev. Lett. 130, 256901 (2023)]. We proceed to discuss the effects of such enhancement on the room temperature graphene resistivity, hinting towards a possible reconciliation of theoretical and experimental discrepancies.

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Lorenzo Graziotto, Francesco Macheda, Thibault Sohier, Matteo Calandra, Francesco Mauri. 2023-10-13. Theory of infrared double-resonance Raman spectrum in graphene: the role of the zone-boundary electron-phonon enhancement. https://doi.org/10.1103/physrevb.109.075420

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