Superstructure induced by a topological defect in graphitic cones
- 15 March 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 61 (12), 8496-8500
- https://doi.org/10.1103/physrevb.61.8496
Abstract
When a pentagon defect is introduced into a graphite sheet, a cone structure is formed. We simulate scanning-tunneling-microscopy (STM) images of the graphitic cone based on density-functional calculations. Simulated STM images show approximately superstructures consisting of ring patterns which reproduce well the petal-like structure observed in experiments. An analysis using the effective-mass theory shows that the superstructures by the topological defects are qualitatively different from those observed often around defects of flat graphite surfaces.
Keywords
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