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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica B

ISSN

0921-4526

e-ISSN

—

Svazek periodika

475

Číslo periodika v rámci svazku

Oct

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

61-65

Kód UT WoS článku

000360095000011

EID výsledku v databázi Scopus

2-s2.0-84936802579