Band-filling and disorder effects in the ordered phase of the Falicov-Kimball model
Fecha
2014Materia
Abstract
We investigate the stability of “magnetic” ordering against band-filling changes and Anderson-like disorder in the Falicov-Kimball model, within dynamical mean-field theory (DMFT). The one-particle density of states is obtained by both arithmetic and geometric averages over disorder, allowing us to detect the localization transition. Varying the Coulomb interaction and disorder strength, we construct phase diagrams where we identify metallic and insulating regions, with or without magnetic orde ...
We investigate the stability of “magnetic” ordering against band-filling changes and Anderson-like disorder in the Falicov-Kimball model, within dynamical mean-field theory (DMFT). The one-particle density of states is obtained by both arithmetic and geometric averages over disorder, allowing us to detect the localization transition. Varying the Coulomb interaction and disorder strength, we construct phase diagrams where we identify metallic and insulating regions, with or without magnetic ordering, and determine how these phases are affected by band filling. ...
En
Physical review. B, Condensed matter and materials physics. Woodbury. Vol. 90, no. 8 (Aug. 2014), 085108, 7 p.
Origen
Estranjero
Colecciones
-
Artículos de Periódicos (39042)Ciencias Exactas y Naturales (5930)
Este ítem está licenciado en la Creative Commons License