English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/140347
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Low-frequency phonons in carbon nanotubes: A continuum approach

AutorChico, Leonor ; Pérez-Álvarez, R.; Cabrillo García, Carlos
Fecha de publicación17-feb-2006
EditorAmerican Physical Society
CitaciónPhysical Review B - Condensed Matter and Materials Physics 73: 075425 (2006)
ResumenLow-frequency phonons in carbon nanotubes are studied using a continuum model which allows consideration of an arbitrary wall thickness for the nanotube. Phonon dispersion relations are calculated for two archetypal examples of carbon nanotubes, the (5,5) and (10,10) tubes. The dependence of the radial breathing mode frequency at Γ on the inverse nanotube diameter is verified within this model; furthermore, we prove it to hold for all pure modes within the thin-shell approximation. The effect of the nanotube wall thickness on the eigenfrequencies of carbon nanotubes is also analyzed, and a criterion to fix this parameter within a continuum model is presented. We compare our results to other continuum approaches, and show that by choosing the appropriate parameters, excellent agreement with recent first-principles calculations can be achieved. © 2006 The American Physical Society.
Descripción7 págs.; 6 figs.; 2 apéndices ; PACS number s : 68.65. k, 63.22. m
Versión del editorhttps://doi.org/10.1103/PhysRevB.73.075425
URIhttp://hdl.handle.net/10261/140347
DOI10.1103/PhysRevB.73.075425
Identificadoresdoi: 10.1103/PhysRevB.73.075425
issn: 1098-0121
Aparece en las colecciones: (CFMAC-IEM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Low-frequency.pdf507,15 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.