Journal
NANO LETTERS
Volume 11, Issue 9, Pages 3663-3668Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl201590f
Keywords
Graphene; STM; edge; zigzag; armchair; electronic scattering
Categories
Funding
- Argonne National Laboratory (ANL) Center for Nanoscale Materials (CNM) [998]
- NSF
- DHS
- NM-MIND center
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0847638] Funding Source: National Science Foundation
Ask authors/readers for more resources
We report an atomically resolved scanning tunneling microscopy investigation of the edges of graphene grains synthesized on Cu foils by chemical vapor deposition. Most of the edges are macroscopically parallel to the zigzag directions of graphene lattice. These edges have microscopic roughness that is found to also follow zigzag directions at atomic scale, displaying many similar to 120 degrees turns. A prominent standing wave pattern with periodicity similar to 3a/4 (a being the graphene lattice constant) is observed near a rare-occurring armchair-oriented edge. Observed features of this wave pattern are consistent with the electronic intervalley backscattering predicted to occur at armchair edges but not at zigzag edges.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available