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Soliton fractional charge of disordered graphene nanoribbon
- Authors
- Jeong, Y. H.; Yang, S-R Eric; Cha, M-C
- Issue Date
- 3-7월-2019
- Publisher
- IOP PUBLISHING LTD
- Keywords
- graphene nanoribbon; gap states; edge antiferromagnetism; Mott-Anderson insulator; soliton; fractional charge
- Citation
- JOURNAL OF PHYSICS-CONDENSED MATTER, v.31, no.26
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICS-CONDENSED MATTER
- Volume
- 31
- Number
- 26
- ISSN
- 0953-8984
- Abstract
- We investigate the properties of the gap-edge states of half-filled interacting disordered zigzag graphene nanoribbons, and find that the midgap states can display a quantized fractional charge of 1/2. These gap-edge states can be represented by topological kinks with their site probability distribution divided between the left and right 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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