title: Low B field magneto-phonon resonances in single-layer and bilayer graphene.
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.
authors: JARA-FIT and 2nd Institute of Physics, RWTH Aachen University , 52074 Aachen, Germany.
authors: Christoph
authors: C
authors: Neumann
authors: Sven
authors: S
authors: Reichardt
authors: Marc
authors: M
authors: Drögeler
authors: Bernat
authors: B
authors: Terrés
authors: Kenji
authors: K
authors: Watanabe
authors: Takashi
authors: T
authors: Taniguchi
authors: Bernd
authors: B
authors: Beschoten
authors: Slava V
authors: SV
authors: Rotkin
authors: Christoph
authors: C
authors: Stampfer
keywords: Fermi velocity; Graphene; Landau levels; boron nitride; magneto-Raman spectroscopy