Abstract
Abstract
Magnetic skyrmions are nanoscale magnetic whirls that are highly stable and can be moved by currents. They have led to the prediction of a skyrmion-based artificial neuron device with leak-integrate-fire functionality. However, so far, these devices lack a refractory process, estimated to be crucial for neuronal dynamics. Here we demonstrate that a biskyrmion-based artificial neuron overcomes this insufficiency. When driven by spin-orbit torques, a single biskyrmion splits into two subskyrmions that move towards a designated location and can be detected electrically, ultimately resembling the excitation process of a neuron that fires. The attractive interaction of the two skyrmions leads to a unique trajectory: Once they reach the detector area, they automatically return to the center to reform the biskyrmion but on a different path. During this reset period, the neuron cannot fire again. Our suggested device resembles a biological neuron with the leak, integrate, fire and refractory characteristics increasing the bio-fidelity of current skyrmion-based devices.
Funder
European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant
SFB TRR 227 of Deutsche Forschungsgemeinschaft
Reference46 articles.
1. Magnetic domain propagation circuit;Bobeck,1969
2. Magnetic bubble mass memory;Michaelis;IEEE Trans. Magn.,1975
3. Shiftable magnetic shift register and method of using the same;Parkin,2004
4. Thermodynamically stable vortices in magnetically ordered crystals. the mixed state of magnets;Bogdanov;Zh. Eksp. Teor. Fiz,1989
5. Skyrmion lattice in a chiral magnet;Mühlbauer;Science,2009
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