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 |
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Article number | 265601 |
Journal | Journal of Physics Condensed Matter |
Volume | 31 |
Issue number | 26 |
DOIs | |
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