Momentum Distribution Functions in a One-Dimensional Extended Periodic Anderson Model. (20th September 2015)

• Record Type: Journal Article
• Authors: Hagymási, I.; Sólyom, J.; Legeza, Ö.
• Other Names: Moshchalkov Victor V. Academic Editor.
• Is Part Of: Advances in condensed matter physics. Volume 2015(2015)
• Publication Date: 2015-09-20
• Subjects: Condensed matter -- Periodicals; Condensed matter; Periodicals; 530.41
• DOI: 10.1155/2015/614017
• Languages: English
• ISSNs: 1687-8124

Abstract

Abstract : We study the momentum distribution of the electrons in an extended periodic Anderson model, where the interaction, U c f, between itinerant and localized electrons is taken into account. In the symmetric half-filled model, due to the increase of the interorbital interaction, thef electrons become more and more delocalized, while the itinerancy of conduction electrons decreases. Above a certain value ofU c f thef electrons become again localized together with the conduction electrons. In the less than half-filled case, we observe thatU c f causes strong correlations between thef electrons in the mixed valence regime.