Título

Optical matrix elements in tight-binding approach of hydrogenated Si nanowires

Autor

JOSE ALEJANDRO DIAZ MENDEZ

MIGUEL CRUZ IRISSON

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

Silicon nanowires - (SILICON NANOWIRES) Tight-binding approach - (TIGHT-BINDING APPROACH) Dielectric function - (DIELECTRIC FUNCTION) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) FÍSICA - (CTI) ELECTRÓNICA - (CTI)

Resumen o descripción

The dependence of the imaginary part of the dielectric function on the quantum confinement within two different schemes: intra-atomic and interatomic optical matrix elements are applied and compared. The optical spectra of Si nanowires are studied by means of a semi-empirical sp3s* tight-binding supercell model. The surface dangling bonds are passivated by hydrogen atoms. The results show that although the intra-atomic matrix elements are small in magnitude, the interference between these terms and the interatomic matrix elements contributes with nearly 25% of the total absorption. Thus, a quantitative treatment of nanostructures may not be possible without the inclusion of intra-atomic matrix elements.

Fecha de publicación

2009

Tipo de publicación

Artículo

Versión de la publicación

Versión aceptada

Recurso de información

http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1228

Formato

application/pdf

Idioma

Inglés

Audiencia

Estudiantes

Investigadores

Público en general

Sugerencia de citación

Miranda, A., et al., (2009). Optical matrix elements in tight-binding approach of hydrogenated Si nanowires, Microelectronics Journal (40): 456-458

Repositorio Orígen

Repositorio Institucional del INAOE

Descargas

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