Further Evidence of Nagaoka's Bound State for Conduction Electrons in Dilute Alloys

Abstract

The temperature dependence of the solute magnetic susceptibility of very dilute Cu-Fe alloys shows an anomaly at a temperature in the range 6-17\ifmmode^\circ\else\textdegree\fi{}K. The effective Bohr-magneton value of the localized moment is appreciably reduced below this temperature. It is suggested that this anomaly can be interpreted as further evidence of the formation of a quasibound election state as suggested by Nagaoka.