Magnetic Skyrmion as a Nonlinear Resistive Element: A Potential Building Block for Reservoir Computing

The topologically protected magnetic textures called skyrmions may provide a suitable basis for r00exe00exs00exe00exr00exv00exo00exi00exr c00exo00exm00exp00exu00ext00exi00exn00exg, one approach to brain-inspired cognitive computing. Reservoirs of self-organized skyrmions offer potential advantages in size, efficiency, and complexity, compared to systems of memristive devices, quantum-dot lasers, and atomic switches. The basic element here is an isolated skyrmion in a ferromagnetic ribbon; thus the authors examine current flow through magnetic skyrmions based on anisotropic magnetoresistance, analyzing the nonlinear current-voltage characteristics. The scheme they provide offers a path to spintronic neuromorphic computing.