Electronic properties of graphene grain boundaries


Autoria(s): Ayuela Fernández, Andrés; Jaskólski, Wlodzimierz; Santos Expósito, Hernán; Chico, Leonor
Data(s)

24/11/2015

24/11/2015

08/08/2014

Resumo

Grain boundaries and defect lines in graphene are intensively studied for their novel electronic and magnetic properties. However, there is not a complete comprehension of the appearance of localized states along these defects. Graphene grain boundaries are herein seen as the outcome of matching two semi-infinite graphene sheets with different edges. We classify the energy spectra of grain boundaries into three different types, directly related to the combination of the four basic classes of spectra of graphene edges. From the specific geometry of the grains, we are able to obtain the band structure and the number of localized states close to the Fermi energy. This provides a new understanding of states localized at grain boundaries, showing that they are derived from the edge states of graphene. Such knowledge is crucial for the ultimate tailoring of electronic and optoelectronic applications.

Identificador

New Journal of Physics 16 2014 : (2014) // Article ID 083018

1367-2630

http://hdl.handle.net/10810/16162

10.1088/1367-2630/16/8/083018

Idioma(s)

eng

Publicador

IOP Publishing

Relação

http://iopscience.iop.org/article/10.1088/1367-2630/16/8/083018/meta;jsessionid=3910B20AD6AF926DC8676B50C744622B.c2.iopscience.cld.iop.org#artAbst

Direitos

2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

info:eu-repo/semantics/openAccess

Palavras-Chave #electronic properties #grain boundaries #graphene #chemical-vapor deposition #polycrystalline graphene #defects #transport #scale
Tipo

info:eu-repo/semantics/article