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arXiv · 1812.02853

Soliton fractional charge of disordered graphene nanoribbon

Y. H. Jeong·S. -R. Eric Yang·M. -C. Cha
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Abstract

We investigate the properties of the gap-edge states of half-filled interacting disordered zigzag graphene nanoribbons. We find that the midgap states can display the quantized fractional charge of 1/2. These gap-edge states can be represented by topological kinks with their site probability distribution divided between the opposite zigzag edges with different chiralities. In addition, there are numerous spin-split gap-edge states, similar to those in a Mott-Anderson insulator.

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Y. H. Jeong, S. -R. Eric Yang, M. -C. Cha. 2018-12-06. Soliton fractional charge of disordered graphene nanoribbon. https://doi.org/10.1088/1361-648x/ab146b

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