Influence of the unfolding procedure on the electronic level spacing statistics: Application to silver nanoparticles

• Autores: Medrano, L. R., Landauro, C. V., Rojas, J.
• Formato: artículo
• Fecha de Publicación: 2010
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/8863
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/8863
• Nivel de acceso: acceso abierto
• Materia: Nanopartículas de plata; Estadística de separación de niveles; Método de re-escalado; Silver nanoparticles; Level spacing statistics; Unfolding procedure

In the present work we study the influence of the unfolding procedure on the electronic level spacing statistics of silver nanoparticles (in their most stable configuration) with 923 and 2057 atoms, which were obtained employing molecular dynamics simulation with a tighet-binding potential. The results indicate that there is a strong dependence of the Brody parameter with the degree "n" of the polynomial used to make the unfolding procedure, especially for small n. For n=>6 the Brody parameter, independently of the nanoparticle sizes, remains almost constant. Thus, it was determined that the Brody parameter is close to the value corresponding to the Wiguer distribution, which is expected for systems in the metallic regime.