Abstract
A theory of the conductivity of insulator + metal nanoclusters composites was developed. The rate constant for tunnel electron transfer between nanoclusters was obtained. Three current passage regimes are possible, regimes of weak, strong, and superstrong electric fields. At weak fields, the distribution of electrons produced in the ionization of neutral clusters is almost equilibrium. Conductivity under these conditions was calculated. A strong magnetic field dependence of the resistance of ferromagnetic clusters is possible. An exact equation for the magnetic field and temperature dependences of resistance was obtained.
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