Octagonal Defects at Carbon Nanotube Junctions

We investigate knee-shaped junctions of semiconductor zigzag carbon nanotubes. Two dissimilar octagons appear at such junctions; one of them can reconstruct into a pair of pentagons. The junction with two octagons presents two degenerate localized states at Fermi energy (E (F)). The reconstructed ju...

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Detalles Bibliográficos
Autores principales: Jaskólski, W., Pelc, M., Chico, Leonor, Ayuela, A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2013
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3780623/
https://www.ncbi.nlm.nih.gov/pubmed/24089604
http://dx.doi.org/10.1155/2013/658292
Descripción
Sumario:We investigate knee-shaped junctions of semiconductor zigzag carbon nanotubes. Two dissimilar octagons appear at such junctions; one of them can reconstruct into a pair of pentagons. The junction with two octagons presents two degenerate localized states at Fermi energy (E (F)). The reconstructed junction has only one state near E (F), indicating that these localized states are related to the octagonal defects. The inclusion of Coulomb interaction splits the localized states in the junction with two octagons, yielding an antiferromagnetic system.

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