On the mechanism of creating pinched hysteresis loops using a commercial memristor device

In this short communication we analyze the impact of signal harmonics on the formation of the pinched hysteresis loop using a commercial memristor device. We show that by using only the fundamental frequency and the second harmonic components, extracted from the measured electrical current signal, a distortion-less pinched hysteresis loop is re-created. This loop is then used to simulate memristor-based AND/OR gates without any loss in digital functionality. This verifies that the generation of a pinched hysteresis loop requires a nonlinear frequency doubling mechanism to create a second harmonic in the current signal from an applied single frequency voltage excitation. Obtaining a pinched loop with three pinch points from the experimentally measured data is also demonstrated. © 2019 Elsevier GmbH