Noise probe for bias-dependent current-path rearrangements in disordered solids

Abstract
We present a probe that can distinguish among a large set of physical noisy mechanisms when the current flows in a percolative-like manner, through a disordered material. The measuring technique can determine the existence of a bias-dependent current flow pattern. It is found that there are systems where each bias gives a noise signature which is determined by its special current flow pattern.

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