Soliton fractional charge of disordered graphene nanoribbon

Jeong, Y. H.; Yang, S-R Eric; Cha, M-C

doi:10.1088/1361-648X/ab146b

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Soliton fractional charge of disordered graphene nanoribbon

Jeong, Y. H.;
Yang, S-R Eric;
Cha, M-C

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13

초록

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.

키워드

graphene nanoribbon; gap states; edge antiferromagnetism; Mott-Anderson insulator; soliton; fractional charge; STATES; LOCALIZATION

제목: Soliton fractional charge of disordered graphene nanoribbon

저자: Jeong, Y. H.; Yang, S-R Eric; Cha, M-C

DOI: 10.1088/1361-648X/ab146b

발행일: 2019-07-03

유형: Article

저널명: Journal of Physics: Condensed Matter

권: 31

호: 26