Theory of valence transitions in ytterbium-based compounds
arXiv:cond-mat/0006495
Abstract
The anomalous behavior of YbInCu4 and similar compounds is modeled by the exact solution of the spin one-half Falicov-Kimball model in infinite dimensions. The valence-fluctuating transition is related to a metal-insulator transition caused by the Falicov-Kimball interaction, and triggered by the change in the f-occupancy.
(10 pages, 7 figures, ReVTeX and epsfig, to appear in Proceedings of NATO conference, BLED, 2000)