Fig. 4 SPICE simulation of stochasticity. SPICE simulation of stochasticity. (A) Measured critical current of a 10-μm JJ synapse in the partially ordered magnetic state as a function of temperature (black circles); lines serve as visual guides. Simulated stochasticity of a 100-nm JJ synapse as a function of temperature (blue squares). (B) Block diagram of the circuit model. (C) Voltage at output (black) and magnetic order (blue) as a function of time simulated at 2 K. (D) Voltage at output (black) and magnetic order (blue) as a function of time simulated at 3 K. Michael L. Schneider et al. Sci Adv 2018;4:e1701329 Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).