%0 Journal Article
%T Effects of broadening and electron overheating in tunnel structures based on metallic clusters
%A A. V. Babich
%A V. V. Pogosov
%J Physics
%D 2009
%I arXiv
%R 10.1134/S1063783410010300
%X We study the influence of energy levels broadening and electron subsystem overheating in island electrode (cluster) on current-voltage characteristics of three-electrode structure. A calculation scheme for broadening effect in one-dimensional case is suggested. Estimation of broadening is performed for electron levels in disc-like and spherical gold clusters. Within the two-temperature model of metallic cluster and by using a size dependence of the Debye frequency the effective electron temperature as a function of bias voltage is found approximately. We suggest that the effects of broadening and electron overheating are responsible for the strong smoothing of current-voltage curves, which is observed experimentally at low temperatures in structures based on clusters consisting of accountable number of atoms.
%U http://arxiv.org/abs/0906.4941v1