Toshiharu Nagumo

Statistical characterization of trap position, energy, amplitude and time constants by RTN measurement of multiple individual traps

Distributions of trap position, energy, amplitude, time constants of random telegraph noise and their correlation are examined by characterizing multiple individual traps. The traps detected were not uniformly distributed in the energy space. Contrary to the elastic tunneling model, there was no correlation between the time constants and depth-wise position.

New analysis methods for comprehensive understanding of Random Telegraph Noise

New analysis methods useful for understanding both complex waveforms and statistical behaviors of Random Telegraph Noise (RTN) are proposed. Complex waveforms are clearly visualized using Time Lag Plots. Bias dependence of statistically extracted average trap number is discussed, with emphasis on the importance of undetectable traps on product reliability.