期刊
NANO LETTERS
卷 15, 期 3, 页码 1547-1552出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl5038825
关键词
Graphene; boron nitride; magneto-Raman spectroscopy; Landau levels; Fermi velocity
类别
资金
- Helmholtz Nanoelectronic Facility (HNF)
- DFG
- ERC [280140]
- EU [NECT-ICT-604391]
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 x 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.
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