Chirality-Reversible Multistate Switching via Two Orthogonal Spin-Orbit Torques in a Perpendicularly Magnetized System
Chirality-Reversible Multistate Switching via Two Orthogonal Spin-Orbit Torques in a Perpendicularly Magnetized System
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DOI：
10.1103/physrevapplied.13.024052
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发表时间：
2020-02
影响因子：
4.6
通讯作者：
W. L. Yang;Caihua Wan;Z. R. Yan;Xiang Zhang;M. Stebliy;Xiao Wang;C. Fang;C. Guo;Y. Xing-Y.-X
中科院分区：
文献类型：
--
作者：
W. L. Yang;Caihua Wan;Z. R. Yan;Xiang Zhang;M. Stebliy;Xiao Wang;C. Fang;C. Guo;Y. Xing-Y.-X
多功能的自旋-轨道-扭矩切换在自旋逻辑和神经形态计算中具有潜在的实用价值。利用两个正交的自旋轨道力矩，我们实现了具有垂直磁各向异性的$\mathrm{Pt}$/$\mathrm{Co}$/$\mathrm{Mg}\mathrm{O}$横杆的磁化强度在自旋向上、自旋向下和自旋随机态之间的非挥发切换。通过电学方法，我们甚至可以将磁化电流的手性从顺时针方向反转到逆时针方向。实现多态之间的手性可控切换可能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 $\mathrm{Pt}$/$\mathrm{Co}$/$\mathrm{Mg}\mathrm{O}$ 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.