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We have studied the longitudinal electronic collective transport properties in a disordered array of TiSi2 nanocrystals (with surface density of 1012cm−2) embedded in Si polycrystalline matrix as a function of temperature. The system is characterized by a high degree of disorder compared to the standard disordered nanocrystal array usually studied in the literature. Despite of this fundamental difference, we demonstrate that the theoretical models used to describe the collective electronic transport in standard systems are adequate to describe the electrical behavior of such a “nonstandard” system. In particular, we show that two different conduction regimes, separated by a crossover temperature T*, exist: at T
American Institute of Physics
Publication date: 
15 Jan 2007

F Ruffino, AM Piro, G Piccitto, MG Grimaldi

Biblio References: 
Volume: 101 Issue: 2 Pages: 024316
Journal of applied physics