Electrical input structures for nanomagnetic logic devices

Co/Pt nanomagnets close to a current driven wire are proposed as an electrical input interface for nanomagnetic logic. Their switching field shows a significant dependence of the external magnetic field sweep rate and the temperature, which can be modeled by the calibrated Sharrock formula, realizing coercivity extrapolations in the μs time scale. The influence of the current pulse in the wire is modeled as a generated Oersted field and an additional temperature rise in the structure. The models are used to simulate the current pulse characteristics sufficient to control the input magnet. Oersted switching experiments verify the proposed modeling, visualize controlled nanomagnets in close vicinity of the wire and thereby demonstrate the functionality of the input device.