Ballistic transport in graphene grown by chemical vapor deposition

Journal Article · Mon Jan 13 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4861627· OSTI ID:22275818

Calado, V. E.; Goswami, S.; Xu, Q.; Vandersypen, L. M. K., ^[1]; Zhu, Shou-En; Watanabe, K.; Taniguchi, T. ^[2]

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1. Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft (Netherlands)
2. Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan)

In this letter, we report the observation of ballistic transport on micron length scales in graphene synthesised by chemical vapour deposition (CVD). Transport measurements were done on Hall bar geometries in a liquid He cryostat. Using non-local measurements, we show that electrons can be ballistically directed by a magnetic field (transverse magnetic focussing) over length scales of ∼1 μm. Comparison with atomic force microscope measurements suggests a correlation between the absence of wrinkles and the presence of ballistic transport in CVD graphene.

• OSTI ID: 22275818
• Journal Information: Applied Physics Letters, Vol. 104, Issue 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMIC FORCE MICROSCOPY
CHEMICAL VAPOR DEPOSITION
CRYOSTATS
ELECTRONS
GRAPHENE
MAGNETIC FIELDS
TRANSPORT