Evidence for existence of nondegenerate delocalized electrons in A_1C_60 at high temperatures

摘要

Electronic properties of rocksalt A_1C_60 are explained in terms of the existence of nondegenerate delocalized electrons. Magnetic susceptibility and Knight shift are proportional to inverse temperature. The semiconducting temperature dependence of d.c. resistivity may be dominated by the grain boundaries. The calculated magnetic susceptibility is compared with experimental data for high temperature phase Rb_1C_60.