Electronic transport in metal nanocrystal arrays: The effect of structuraldisorder on scaling behavior - art. no. 186807

We investigate the impact of structural, disorder on electronic transport i n gold nanocrystal monolayers. Arrays ranging from void-filled networks to well-ordered superlattices show clear voltage thresholds (VT) due to Coulom b blockade, and temperature-independent conduction indicative of quantum tu nneling. Current-voltage, characteristics of arrays with and without long-r ange structural order were found to collapse onto distinct scaling curves. The former follow a single power law: I similar to (V - V-T)(zeta), zeta = 2.25 +/- 0.1. The latter show additional structure, reflecting the underlyi ng disordered topology.