V. F. Kharlamov, D. A. Korostelev, I. G. Bogoraz, O. I. Markov, Yu. V. Khripunov, “Electric conductivity of metal–dielectric–metal structures with dielectric layer formed by spherical metal oxide nanoparticles”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2011, Volume 37, Issue 11,Pages <nobr>43

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Electric conductivity of metal–dielectric–metal structures with dielectric layer formed by spherical metal oxide nanoparticles

V. F. Kharlamov, D. A. Korostelev, I. G. Bogoraz, O. I. Markov, Yu. V. Khripunov

Orel State Technical University

Abstract: The electrical properties of metal–dielectric–metal (MDM) structures with the dielectric layer representing a monolayer of spherical Al$_2$O$_3$ or ZrO$_2$ oxide nanoparticles have been studied. It is established that these heterogeneous structures exhibit electric conductivity according to the mechanism for which the differential resistance $dU/dI$ is negative and reversibly approaches zero with increasing current $I$. The electric conductivity strongly depends on the polarity of the applied voltage $U$, provided that electrodes are made of basically different metals or the same metal with different surface conditions. The mechanism of the electric conductivity in the given MDM structure depends on the diameter of nanoparticles in the dielectric layer.

Received: 07.12.2010