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

^*Corresponding author for this work

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

13 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

General Materials Science
Condensed Matter Physics

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10.1088/1361-648X/ab146b

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title = "Soliton fractional charge of disordered graphene nanoribbon",

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.",

keywords = "Edge antiferromagnetism, Fractional charge, Gap states, Graphene nanoribbon, Mott-anderson insulator, Soliton",

author = "Jeong, \{Y. H.\} and \{Eric Yang\}, \{S. R.\} and Cha, \{M. C.\}",

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doi = "10.1088/1361-648X/ab146b",

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T1 - Soliton fractional charge of disordered graphene nanoribbon

AU - Jeong, Y. H.

AU - Eric Yang, S. R.

AU - Cha, M. C.

PY - 2019/4/23

Y1 - 2019/4/23

N2 - 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.

AB - 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.

KW - Edge antiferromagnetism

KW - Fractional charge

KW - Gap states

KW - Graphene nanoribbon

KW - Mott-anderson insulator

KW - Soliton

UR - https://www.scopus.com/pages/publications/85065810706

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DO - 10.1088/1361-648X/ab146b

M3 - Article

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VL - 31

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 26

M1 - 265601

ER -

Soliton fractional charge of disordered graphene nanoribbon

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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