利用楔形 Pt/Co/Pt 自旋轨道矩器件模拟突触可塑性
Mimicking synaptic plasticity with wedged Pt/Co/Pt spin-orbit torque device
AI总结：
本文制备无磁场下可由自旋轨道矩翻转磁化的楔形 Pt/Co/Pt 器件，实现连续非易失性权重调节及多种突触可塑性，为自旋电子人工突触提供新方案。
摘要：
我们制备了一种具有垂直磁各向异性的楔形 Pt/Co/Pt 器件，并证明 Co 的磁化可以在没有任何磁场的情况下仅由自旋轨道矩实现翻转。与突触权重类似，我们观察到楔形 Pt/Co/Pt 器件的 Co 磁化状态（由反常霍尔电阻 RH 表示）可通过施加脉冲电流进行连续调节，并具有大量非易失性能级。此外，我们研究了楔形 Pt/Co/Pt 器件的突触可塑性，包括兴奋性突触后电位或抑制性突触后电位，以及脉冲时间依赖可塑性。该工作阐明了楔形 Pt/Co/Pt 器件作为由自旋电流诱导的新型人工突触器件候选者的前景，并为自旋电子学与突触器件的结合铺平了重要道路。
英文摘要：
We fabricated a wedge-shaped Pt/Co/Pt device with perpendicular magnetic anisotropy and manifested that the Co magnetization can be solely switched by spin-orbit torque without any magnetic field. Similar to the synaptic weight, we observed that the state of Co magnetization (presented by the anomalous Hall resistance RH) of the wedged Pt/Co/Pt device can be tuned continuously with a large number of nonvolatile levels by applied pulse currents. Furthermore, we studied the synaptic plasticity of the wedged Pt/Co/Pt device, including the excitatory postsynaptic potentials or inhibitory postsynaptic potentials and spiking-time-dependent plasticity. The work elucidates the promise of the wedged Pt/Co/Pt device as a candidate for a new type of artificial synaptic device that is induced by a spin current and paves a substantial pathway toward the combination of spintronics and synaptic devices.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
