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arXiv · 1504.03555

Low B Field Magneto-Phonon Resonances in Single-Layer and Bilayer Graphene

Christoph Neumann·Sven Reichardt·Marc Drögeler·Bernat Terrés·Kenji Watanabe·Takashi Taniguchi·Bernd Beschoten·Slava V. Rotkin·Christoph Stampfer
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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 $1.20 \times 10^6$ m/s, for the observed "dressed" Landau level transitions, as well as the broadening of the resonances, which increases with Landau level index.

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Christoph Neumann, Sven Reichardt, Marc Drögeler, Bernat Terrés, Kenji Watanabe, Takashi Taniguchi, Bernd Beschoten, Slava V. Rotkin, Christoph Stampfer. 2015-04-14. Low B Field Magneto-Phonon Resonances in Single-Layer and Bilayer Graphene. https://doi.org/10.1021/nl5038825

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