Low B field magneto-phonon resonances in single-layer and bilayer graphene.
basic_science · Level V
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- Record sourced from PubMed, PMID 25646665.
- Also identified by DOI 10.1021/nl5038825.
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Abstract
Many-body effects resulting from strong electron-electron and electron-phonon interactions play a significant role in graphene physics. We report on their manifestation in low B field magneto-phonon resonances in high-quality exfoliated single-layer and bilayer graphene encapsulated in hexagonal boron nitride. These resonances allow us to extract characteristic effective Fermi velocities, as high as 1.20 × 10(6) m/s, for the observed "dressed" Landau level transitions, as well as the broadening of the resonances, which increases with the Landau level index.