Soliton fractional charge of disordered graphene nanoribbon

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

doi:10.1088/1361-648X/ab146b

Soliton fractional charge of disordered graphene nanoribbon

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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.

Original language	English
Article number	265601
Journal	Journal of Physics Condensed Matter
Volume	31
Issue number	26
DOIs	https://doi.org/10.1088/1361-648X/ab146b
Publication status	Published - 2019 Apr 23

Bibliographical note

Publisher Copyright:
© 2019 IOP Publishing Ltd.

Keywords

Edge antiferromagnetism
Fractional charge
Gap states
Graphene nanoribbon
Mott-anderson insulator
Soliton

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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10.1088/1361-648X/ab146b

Cite this

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AU - Eric Yang, S. R.

AU - Cha, M. C.

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KW - Edge antiferromagnetism

KW - Fractional charge

KW - Gap states

KW - Graphene nanoribbon

KW - Mott-anderson insulator

KW - Soliton

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Soliton fractional charge of disordered graphene nanoribbon

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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