Electronic states of zigzag graphene nanoribbons with edges reconstructed with topological defects

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00238101" target="_blank" >RIV/68407700:21340/15:00238101 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.physb.2015.06.025" target="_blank" >http://dx.doi.org/10.1016/j.physb.2015.06.025</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physb.2015.06.025" target="_blank" >10.1016/j.physb.2015.06.025</a>

Result language
angličtina
Original language name
Electronic states of zigzag graphene nanoribbons with edges reconstructed with topological defects
Original language description
The energy spectrum and electronic density of states (DOS) of zigzag graphene nanoribbons with edges reconstructed with topological defects are investigated within the tight-binding method. In case of the Stone-Wales zz(57) edge the low-energy spectrum is markedly changed in comparison to the pristine zz edge. We found that the electronic DOS at the Fermi level is different from zero at any width of graphene nanoribbons. In contrast, for ribbons with heptagons only at one side and pentagons at another one the energy gap at the Fermi level is open and the DOS is equal to zero. The reason is the influence of uncompensated topological charges on the localized edge states, which are topological in nature. This behavior is similar to that found for the structured external electric potentials along the edges.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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