  The resistive transition in nanocomposite films of silver (Ag) nanoclusters
of ~ 1 nm diameter embedded in gold (Au) matrix exhibits an anomalous
resistance peak at the onset of the transition, even for transition
temperatures as high as 260 K. The maximum value of the resistance ranges
between ~ 30% - 300% above that of the normal state depending on devices as
well as lead configuration within a single device. The excess resistance regime
was observed in about 10% of the devices, and extends from ~ 10 - 100 K.
Application of magnetic field of 9 T was found to partially suppress the excess
resistance. From the critical current behavior, as well as negative
differential resistance in the current-voltage characteristics, we discuss the
possibility of interacting phase slip centers and alternate physical scenarios
that may cause the excess resistance in our system.
