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Soliton fractional charge of disordered graphene nanoribbon

Title
Soliton fractional charge of disordered graphene nanoribbon
Author
차민철
Keywords
graphene nanoribbon; gap states; edge antiferromagnetism; Mott-Anderson insulator; soliton; fractional charge
Issue Date
2019-04
Publisher
IOP PUBLISHING LTD
Citation
JOURNAL OF PHYSICS-CONDENSED MATTER, v. 31, No. 26, Article no. 265601
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.
URI
https://iopscience.iop.org/article/10.1088/1361-648X/ab146b/metahttp://repository.hanyang.ac.kr/handle/20.500.11754/113140
ISSN
0953-8984; 1361-648X
DOI
10.1088/1361-648X/ab146b
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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