Modeling of Negative Differential Resistance in Memristive Devices

Reuben Pradhan, Department of Electrical and Computer Engineering, Boise State University
Dr. Kris Campbell, Department of Electrical and Computer Engineering, Boise State University

Abstract

Our research group has been studying the electrical properties of the chalcogenide-based memristive devices that we have fabricated at Boise State in the Idaho Microfabrication Laboratory. We have developed a circuit model using LTSpice that builds off of an existing tunnel diode model [1]. Using this model as a starting point, we have modified the model in order to fit our experimental data. The device has a ‘memory’, in that the state that it is programmed to depends upon the previous state. Our next step is to try to incorporate this ‘memory’ effect into our device model. A reasonable device model will allow us to simulate circuit designs using this device technology.