English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/96855
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Exact study of the effect of level statistics in ultrasmall superconducting grains

AutorSierra, Germán ; Dukelsky, Jorge ; Dussel, G. G.; Von Delft, J.; Braun, Fabian
Fecha de publicación2000
EditorAmerican Physical Society
CitaciónPhysical Review B 61: R11890- R11893 (2000)
ResumenThe reduced BCS model that is commonly used for ultrasmall superconducting grains has an exact solution worked out long ago by Richardson in the context of nuclear physics. We use it to check the quality of previous treatments of this model, and to investigate the effect of level statistics on pairing correlations. We find that the ground-state energies are on average somewhat lower for systems with nonuniform than uniform level spacings, but both have an equally smooth crossover from the bulk to the few-electron regime. In the latter, statistical fluctuations in ground-state energies strongly depend on the grain's electron number parity. ©2000 The American Physical Society.
URIhttp://hdl.handle.net/10261/96855
DOInull
Identificadoresdoi: null
issn: 0163-1829
Aparece en las colecciones: (CFMAC-IEM) Artículos
(CFMAC-IFF) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Sierra.pdf89,76 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


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