Voltage Controlled Gradient as a Mechanism for Skyrmion-Based Racetrack Memory Application on a Synthetic Antiferromagnet Nanotrack

The magnetic skyrmion is a promising information carrier for next generation logic, neuromorphic computing, and memory devices due to its topological stability, extremely small size, and low operating current. A computational demonstration of a skyrmion driven on a synthetic antiferromagnet nanotrack using a voltage controlled magnetic anisotropy gradient for the application of racetrack memory device is studied in this work. The velocity of the skyrmion is dependent on Gilbert damping constant. The proposed device makes use of the notch at the end of the nanotrack ensuring a constant flow of ‘0’ and ‘1’ bits without any accumulation on the racetrack.