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  • Title: Field-Free Programmable Spin Logics via Chirality-Reversible Spin-Orbit Torque Switching.
    Author: Wang X, Wan C, Kong W, Zhang X, Xing Y, Fang C, Tao B, Yang W, Huang L, Wu H, Irfan M, Han X.
    Journal: Adv Mater; 2018 Aug; 30(31):e1801318. PubMed ID: 29931713.
    Abstract:
    Spin-orbit torque (SOT)-induced magnetization switching exhibits chirality (clockwise or counterclockwise), which offers the prospect of programmable spin-logic devices integrating nonvolatile spintronic memory cells with logic functions. Chirality is usually fixed by an applied or effective magnetic field in reported studies. Herein, utilizing an in-plane magnetic layer that is also switchable by SOT, the chirality of a perpendicular magnetic layer that is exchange-coupled with the in-plane layer can be reversed in a purely electrical way. In a single Hall bar device designed from this multilayer structure, three logic gates including AND, NAND, and NOT are reconfigured, which opens a gateway toward practical programmable spin-logic devices.
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