Mobilities and scattering times in decoupled graphene monolayers
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Original version
Schmidt, H.; Lüdtke, T.; Barthold, P.; Haug, R.J.: Mobilities and scattering times in decoupled graphene monolayers. In: Physical Review B 81 (2010), Nr. 12, 121403. DOI:
https://doi.org/10.1103/PhysRevB.81.121403
Repository version
To cite the version in the repository, please use this identifier:
https://doi.org/10.15488/2866
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Abstract:
Folded single-layer graphene forms a system of two decoupled monolayers being only a few angstroms apart. Using magnetotransport measurements we investigate the electronic properties of the two layers conducting in parallel. We show a method to obtain the mobilities for the individual layers despite them being jointly contacted. The mobilities in the upper layer are significantly larger than in the bottom one indicating weaker substrate influence. This is confirmed by larger transport and quantum scattering times in the top layer. Analyzing the temperature dependence of the Shubnikov-de Haas oscillations, effective masses and corresponding Fermi velocities are obtained yielding reduced values down to 66% in comparison to monolayers. © 2010 The American Physical Society.
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Publication type:
Article
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publishedVersion
Publication date:
2010
Keywords english:
graphene monolayer
,
QHE
DDC:
530 | Physik
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