期刊
PHYSICAL REVIEW LETTERS
卷 107, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.216603
关键词
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资金
- EuroMagNETII under the EU [228043]
- Keck Foundation
- NSF-MRSEC [0820382]
- Partner University at the Embassy of France
- RTRA DISPOGRAPH [PICS-4340, 395/N-PICS-FR/2009/0, MSM0021620834, GACR P204/10/1020]
- [670/N-ESF-EPI/2010/0]
- [671/N-ESF-EPI/2010/0]
- [GRA/10/E006]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [820382] Funding Source: National Science Foundation
The energy dependence of the electronic scattering time is probed by Landau level spectroscopy in quasineutral multilayer epitaxial graphene. From the broadening of overlapping Landau levels we find that the scattering rate 1/tau increases linearly with energy epsilon. This implies a surprising property of the Landau level spectrum in graphene-the number of resolved Landau levels remains constant with the applied magnetic field. Insights are given about possible scattering mechanisms and carrier mobilities in the graphene system investigated.
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