Biskyrmion-based artificial neuron

Magnetic skyrmions are nanoscale magnetic whirls that highly stable and can be moved by currents which has led to the prediction of a skyrmion-based artificial neuron device with leak-integrate-fire functionality. However, so far, these devices lack refractory process, estimated crucial for neuronal dynamics. Here we demonstrate biskyrmion-based overcomes this insufficiency. When driven spin-orbit torques, single biskyrmion splits into two subskyrmions move towards designated location detected electrically, resembling excitation process fires ultimately. The attractive interaction leads unique trajectory: Once they reach detector area, automatically return center reform but on different path. During reset period, cannot fire again. Our suggested resembles biological leak, integrate, characteristics better than all existing far.