Modelling and simulation of nanomagnetic logic with cadence virtuoso using Verilog-A

This paper presents an efficient compact model of a single nanomagnet implemented in Verilog-A. A single magnet is the key element of nanomagnetic logic systems. Two field coupled nanomagnets act as a magnetic inverter. To verify the model, a circuit consisting of five such single magnets in a loop is simulated and the results are compared to an experiment on an fabricated inverter chain. To reproduce the variations in a manufacturing process the Monte Carlo simulation method is applied and the magnetization direction of the last magnet in a chain is evaluated for one hundred clocking cycles. The results are compared to the experimental data.