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Analysis shows stochastic processes underpin Random Telegraph Noise, indicating stochastic chaos rather than determinism.
Lately, Random Telegraph Noise (RTN) has been deemed, via specific mathematical metrics, to be possibly deterministic-chaotic rather than stochastic, with severe implications for applications that leverage on the RTN stochastic nature. Yet, this was claimed by analyzing a limited number of RTN traces. Here we analyze several RTN traces measured in different devices and conditions, mathematically generated traces, and traces resulting from advanced simulations of RTN in MIM structures. It is shown that the mathematical metrics employed to reveal the deterministic-chaotic nature of RTN are not robust enough to support that claim. Complex RTN is likely to result from inherently stochastic processes embedded in a deterministic multi-body system which could show stochastic chaos, but hardly any determinism.
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Francesco Maria Puglisi (2025) studied this question.
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