来自中科院物理所的研究人员，在垂直磁化的Pt/Co/MgO材料体系中实现了SOT驱动的手性可逆多态翻转，为基于SOT器件的自旋逻辑和自旋电子神经计算铺平道路。相关工作发表在《Physical Review Applied》上 ...
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器件结构与SOT驱动的翻转 摘要 通用的自旋轨道矩开关在自旋逻辑器件和神经形态计算方面有很大的应用器件。利用两个正交的自旋轨道转矩，我们实现了垂直磁各向异性对Pt/Co/MgO 十字样品的多态(自旋向上、自旋向下和自旋随机)非易失性切换。通过电学方法，我们甚至可以将磁化强度对电流的依赖性从顺时针方向逆转为逆时针方向。实现多态间的手性可控切换，这项工作将为自旋逻辑和自旋电子神经计算铺平道路。 Versatile spin-orbit-torque switching is potentially useful for spin logics and neuromorphic computing. Using two orthogonal spin-orbit torques, we nonvolatilely switch the magnetization of a Pt/Co/MgO crossbar with perpendicular magnetic anisotropy among multistates such as the spin-up, spin-down, and spin-random states. By electrical methods, we can even reverse the chirality of the current dependence of the magnetization from clockwise to counterclockwise. Realization of chirality-controllable switching among multistates could pave the way toward spin logics and spintronic neural computing. |
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