Specific many-electron effects in X-ray spectra of simple metals and graphene.
Phys Chem Chem Phys
; 15(18): 6749-56, 2013 May 14.
Article
en En
| MEDLINE
| ID: mdl-23549162
In this work the influence of many-electron effects on the shape of characteristic X-ray emission bands of the simple metals Mg and Al is examined by means of ab initio calculations and semi-empirical models. These approaches are also used for the analysis of C K-emission and absorption spectra of graphene. Both the dynamical screening of the core vacancy and the Auger-effect in the valence band (VB) have been taken into account. Dynamical screening of the core vacancy by valence electrons (the so-called MND effect) is considered ab initio in the framework of density functional theory. The Auger effect in the VB was taken into account within a semi-empirical method, approximating the quadratic dependence of the VB hole level width on the difference between the level energy and the Fermi energy. All theoretical spectra are in very good agreement with available experimental data.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Phys Chem Chem Phys
Asunto de la revista:
BIOFISICA
/
QUIMICA
Año:
2013
Tipo del documento:
Article
País de afiliación:
Rusia
Pais de publicación:
Reino Unido