Voltage-controlled skyrmion-based nanodevices for neuromorphic computing using a synthetic antiferromagnet.
Voltage-controlled skyrmion-based nanodevices for neuromorphic computing using a synthetic antiferromagnet.
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使用合成反铁磁体进行神经形态计算的基于电压控制的斯格明子的纳米器件
DOI:
10.1039/d0na00009d
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发表时间:
2020-03-17
影响因子:
4.7
通讯作者:
中科院分区:
文献类型:
--
作者:
Spintronics exhibits significant potential for a neuromorphic computing system with high speed, high integration density, and low dissipation. In this article, we propose an ultralow-dissipation skyrmion-based nanodevice composed of a synthetic antiferromagnet (SAF) and a piezoelectric substrate for neuromorphic computing. Skyrmions/skyrmion bubbles can be generated in the upper layer of an SAF with a weak anisotropy energy (Ea). Applying a weak electric field on the heterostructure, interlayer antiferromagnetic coupling can be manipulated, giving rise to a continuous transition between a large skyrmion bubble and a small skyrmion. This thus induces a variation of the resistance of a magnetic tunneling junction that can mimic the potentiation/depression of a synapse and the leaky-integral-and-fire function of a neuron at a cost of a very low energy consumption of 0.3 fJ. These results pave a way to ultralow power neuromorphic computing applications.
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Garcia V
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