Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2009 > Anderson impurity model: Double occupanc...
acta de conferencia
"Anderson impurity model: Double occupancy contribution to the magnetic susceptibility"
S. Jaroszewicz and P. Roura-Bas
Proc. of the Workshop "At the Frontiers of Condensed Matter IV - Current Trends and Novel Materials" (FCM2008), Buenos Aires, Argentina, December 9-12, 2008. Ed. J. Guevara, A.M. Llois, G. Lozano and R. Weht
Physica B Condens. Matter. 404(18) (2009) 2865-2867
After solving the single Anderson impurity model (SIAM) within the non-crossing approximation with a finite Coulomb repulsion, U, and vertex corrections (NCAf2v), we focus on the magnetic susceptibility. Using the same diagrammatic expansion the susceptibility can be dressed with two factors, namely, the double state occupancy and the vertex corrections. In this work we analyse the effect of double occupancy on the dynamic and static susceptibility as a function of U and on the degeneracy of the total impurity angular moment, S.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121