Low B field magneto-phonon resonances in single-layer and bilayer graphene.

Neumann, Christoph; Reichardt, Sven; Drögeler, Marc; Terrés, Bernat; Watanabe, Kenji; Taniguchi, Takashi; Beschoten, Bernd; Rotkin, Slava V; Stampfer, Christoph

Neumann, Christoph; Reichardt, Sven; Drögeler, Marc; Terrés, Bernat; Watanabe, Kenji; Taniguchi, Takashi; Beschoten, Bernd; Rotkin, Slava V; Stampfer, Christoph.

Afiliación

Neumann C; JARA-FIT and 2nd Institute of Physics, RWTH Aachen University , 52074 Aachen, Germany.

Nano Lett ; 15(3): 1547-52, 2015 Mar 11.

Article en En | MEDLINE | ID: mdl-25646665

RESUMEN

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.

Palabras clave

Fermi velocity; Graphene; Landau levels; boron nitride; magneto-Raman spectroscopy

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2015 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos

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