Fig. 2: Open-loop programming.
a, Schematic of the two-state operation of the open-loop programming scheme. In the programming phase, the interface board is used to set the gate and source lines to the low-impedance state and the drain line to the high-impedance state, whereas in the reading phase, all three lines are set to the low-impedance state. b, Distribution of output states (wOUT) in the linear scale. The data are fitted with a gamma distribution. c, Distribution of output states (wOUT) in the log10 scale. The distributions are fitted with a Gaussian distribution. d, Three-dimensional map of log10 value of wOUT as a function of device position and different programming voltages. e, Empirical cumulative distribution function (ECDF) as a function of the programmed states in the log10 scale.
