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

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

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 × 106 m/s, for the observed "dressed" Landau level transitions, as well as the broadening of the resonances, which increases with the Landau level index.

Original languageEnglish (US)
Pages (from-to)1547-1552
Number of pages6
JournalNano letters
Volume15
Issue number3
DOIs
StatePublished - Mar 11 2015

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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