Fig. 2: Entropy Source by Noise in 3D Fe-diode. | Nature Communications

Fig. 2: Entropy Source by Noise in 3D Fe-diode.

From: Bayesian neural network with unified entropy source and synapse weights using 3D 16-layer Fe-diode array

Fig. 2: Entropy Source by Noise in 3D Fe-diode.The alternative text for this image may have been generated using AI.

a Classification of different noise. Compared with 1/f noise and thermal noise, the ideal entropy source requires temperature-independent high noise density. b Normalized current power spectral density (S/I2) of the Fe-diode in HRS measured at various bias conditions. c Fano factor (F = (S/I2)/2qI) at f = 102 Hz of the Fe-diode cell in the HRS. d The relationship between log(I) and V−1 in DC current measurement conforms to the TAT transport mechanism. e S/I2 @ f = 10 Hz at T = − 40, 25, and 125 °C, respectively, with increasing Vread. Shot noise keeps constant at various Ts. f S/I2 of the Fe-diode in LRS. Only 1/f noise is observed. g S/I2 sampled at 10 Hz versus current. h, i The relationship among I, V and T conforms to the Schottky Emission.

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