Scanning Tunneling Spectroscopy of Graphene on Graphite
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We report low temperature high magnetic field scanning tunneling microscopy and spectroscopy of graphene flakes on graphite that exhibit the structural and electronic properties of graphene decoupled from the substrate. Pronounced peaks in the tunneling spectra develop with increasing field revealing a Landau level sequence that provides a direct way to identify graphene and to determine the degree of its coupling to the substrate. The Fermi velocity and quasiparticle lifetime, obtained from the positions and width of the peaks, provide access to the electron-phonon and electron-electron interactions.
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The band-gap caused by e-e interaction is of the order of 10 meV, so at B=1 T it is much smaller than the basic energy ħΩ ≈ 36 meV.
“The band-gap caused by the e-e interaction is of the order of 10 meV [45], so at a magnetic field of B = 1 T it is much smaller than the basic energy ℏ Ω ≈ 36 meV.”
From Theory of electron Zitterbewegung in graphene probed by femtosecond laser pulses (2009) · cites this paper as [45]
Two effects may play a role in the proposed experiment: electron-electron interaction and disorder.
“Two effects may play a role in the proposed experiment: the electron - electron (ee) interaction [45] and the presence of disorder [46, 47].”
From Theory of electron Zitterbewegung in graphene probed by femtosecond laser pulses (2009) · cites this paper as [45]
Scanning tunnelling spectroscopy results indicate that e-e interaction leads to a Lorentzian shape of DOS of Landau levels and opens an energy gap between electrons and holes.
“The scanning tunnelling spectroscopy results of Ref. [45] indicate that the e-e interaction leads to a Lorentzian shape of DOS of the Landau levels and it opens an energy gap between the electrons and holes.”
From Theory of electron Zitterbewegung in graphene probed by femtosecond laser pulses (2009) · cites this paper as [45]
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Cites
Geim, A. K., & Novoselov, K. S. (2007) · Nature Materials · doi:10.1038/nmat1849 · Cited by 39,979 · see citing works
The electronic properties of graphene
Castro Neto, A. H., Guinea, F., Peres, N. M. R., Novoselov, K. S., & Geim, A. K. (2009) · Reviews of Modern Physics · doi:10.1103/revmodphys.81.109 · Cited by 24,803 · see citing works
Two-dimensional gas of massless Dirac fermions in graphene
Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Katsnelson, M. I., Grigorieva, I. V., Dubonos, S. V., & Firsov, A. A. (2005) · Nature · doi:10.1038/nature04233 · Cited by 21,611 · see citing works
Electronic properties of disordered two-dimensional carbon
Peres, N. M. R., Guinea, F., & Castro Neto, A. H. (2006) · Physical Review B · doi:10.1103/physrevb.73.125411 · Cited by 1,445 · see citing works
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Research works printed but not linked: 2
- [3]K.S. Novoselov et al ., Proc. Natl. Acad. Sci. 102 , 10451 (2005).
- [7]E. Stolyarova, et al ., Proc. Natl. Acad. Sci. 104 , 9209 (2007).
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Dirac electronic states in graphene systems: optical spectroscopy studies
Orlita, M., & Potemski, M. (2010) · Semiconductor Science and Technology · doi:10.1088/0268-1242/25/6/063001 · Cited by 183 · see citing works
Theory of electron Zitterbewegung in graphene probed by femtosecond laser pulses
Rusin, T. M., & Zawadzki, W. (2009) · Physical Review B · doi:10.1103/physrevb.80.045416 · Cited by 133 · see citing works
Revivals, classical periodicity, and zitterbewegung of electron currents in monolayer graphene
Romera, E., & de los Santos, F. (2009) · Physical Review B · doi:10.1103/physrevb.80.165416 · Cited by 69 · see citing works
- Authors
- Li, G., Luican, A., & Andrei, E. Y.
- Affiliations
- Rutgers, The State University of New Jersey (US)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2009-04-29
- Volume
- 102
- Issue
- 17
- Pages
- 176804-176804
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2157420668
- Cited by
- 528
- References
- 4
- Citations by year
- 2026: 5 · 2025: 13 · 2024: 11 · 2023: 16 · 2022: 23 · 2021: 23 · 2020: 44 · 2019: 21 · 2018: 33 · 2017: 29 · 2016: 36 · 2015: 32 · 2014: 47 · 2013: 26 · 2012: 51
- FWCI
- 27.22
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Rutgers University Community Repository (Rutgers University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Surface and Thin Film Phenomena
- Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
- Keywords
- graphene, graphite substrate, Landau levels, high magnetic fields, Fermi velocity, quasiparticle lifetime, electron-phonon coupling, electron-electron interaction, substrate coupling, tunneling spectroscopy
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