Theory of infrared double-resonance Raman spectrum in graphene: the role of the zone-boundary electron-phonon enhancement
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866915292876111872 |
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| author | Graziotto, Lorenzo Macheda, Francesco Sohier, Thibault Calandra, Matteo Mauri, Francesco |
| author_facet | Graziotto, Lorenzo Macheda, Francesco Sohier, Thibault Calandra, Matteo Mauri, Francesco |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2310_09188 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Theory of infrared double-resonance Raman spectrum in graphene: the role of the zone-boundary electron-phonon enhancement Graziotto, Lorenzo Macheda, Francesco Sohier, Thibault Calandra, Matteo Mauri, Francesco Mesoscale and Nanoscale Physics Computational Physics 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. |
| title | Theory of infrared double-resonance Raman spectrum in graphene: the role of the zone-boundary electron-phonon enhancement |
| topic | Mesoscale and Nanoscale Physics Computational Physics |
| url | https://arxiv.org/abs/2310.09188 |