| Download | - View final version: Antiresonances in the mid-infrared vibrational spectrum of functionalized graphene (PDF, 1.4 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/acs.jpcc.7b01386 |
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| Author | Search for: Lapointe, François1; Search for: Rousseau, Bruno; Search for: Aymong, Vincent; Search for: Nguyen, Minh; Search for: Biron, Maxime; Search for: Gaufrès, Etienne; Search for: Choubak, Saman; Search for: Han, Zheng; Search for: Bouchiat, Vincent; Search for: Desjardins, Patrick; Search for: Côté, Michel; Search for: Martel, Richard |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Abstract | We report anomalous antiresonances in the infrared spectra of doped and disordered single layer graphene. Measurements in both reflection microscopy and transmission configurations of samples grafted with halogenophenyl moieties are presented. Asymmetric transparency windows at energies corresponding to phonon modes near the Γ and K points are observed, in contrast to the featureless spectrum of pristine graphene. These asymmetric antiresonances are demonstrated to vary as a function of the chemical potential and defect density. We propose a model that involves coherent intraband scattering with defects and phonons, thus relaxing the optical selection rule forbidding access to q ≠ Γ phonons. This interpretation of the new phenomenon is supported by our numerical simulations that reproduce the experimental features. |
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| Publication date | 2017-03-29 |
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| Publisher | American Chemical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23002606 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e0c987d8-0af0-400f-99eb-59fef4853db6 |
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| Record created | 2017-12-05 |
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| Record modified | 2020-05-30 |
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