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

doi:10.1021/nl5038825

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

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

27 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 language	English (US)
Pages (from-to)	1547-1552
Number of pages	6
Journal	Nano letters
Volume	15
Issue number	3
DOIs	https://doi.org/10.1021/nl5038825
State	Published - Mar 11 2015

All Science Journal Classification (ASJC) codes

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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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 × 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.",

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T1 - Low B field magneto-phonon resonances in single-layer and bilayer graphene

AU - Neumann, Christoph

AU - Reichardt, Sven

AU - Drögeler, Marc

AU - Terrés, Bernat

AU - Watanabe, Kenji

AU - Taniguchi, Takashi

AU - Beschoten, Bernd

AU - Rotkin, Slava V.

AU - Stampfer, Christoph

PY - 2015/3/11

Y1 - 2015/3/11

N2 - 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.

AB - 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.

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

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