Electrical conduction and current noise mechanism in discontinuous metal films. II. Experimental

Experimental results concerning the electrical conductance, the conductance noise, and the effects of ion migration and diffusion on discontinuous gold films, in a wide range of temperatures, are reported. These results are compared with the theoretical ones obtained by a theory developed in the preceding paper. It is shown that this theory well explains the conductance behavior of the films in a wider temperature range than previous theories and gives the right shape and the correct magnitude for the conductance noise power spectrum. A discussion about some discrepancies between theory and experiments, probably due to the fact that the actual structure of the film has not been properly taken into account, is also given in the text.