单个自旋轨道力矩器件实现无需初始化的可编程全布尔逻辑门

Engineering ›› 2025, Vol. 51 ›› Issue (8) : 215 -220. DOI: 10.1016/j.eng.2025.03.022

研究论文

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Initialization-Free Programmable Spin-Logic Gate in a Single Spin-Orbit Torque Device

Jie Lin ^a^,^# ,
Shuai Zhang ^a^,^# ,
Shihao Li ^a ,
Yan Xu ^a ,
Xin Li ^a ,
Wei Duan ^a ,
Jincheng Hou ^a ,
Chenxi Zhou ^a ,
Wei Zhan ^a ,
Zhe Guo ^b^,^g ,
Min Song ^b^,^g ,
Xiaofei Yang ^a ,
Yufeng Tian ^c ,
Xuecheng Zou ^a ,
Dan Feng ^d^,^e ,
Long You ^a^,^e^,^f^,^*

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Abstract

In-memory computing (IMC) based on spin-logic devices is regarded as an advantageous way to optimize the Von Neumann bottleneck. However, performing complete Boolean logic with spintronic devices typically requires an initialization operation, which can reduce processing speed. In this work, we conceptualize and experimentally demonstrate a programmable and initialization-free spin-logic gate, leveraging spin-orbit torque (SOT) to effectuate magnetization switching, assisted by in-plane Oersted field generated by an integrated bias-field Au line. This spin-logic gate, fabricated as a Hall bar, allows complete Boolean logic operations without initialization. A current flowing through the bias-field line, which is electrically isolated from the device by a dielectric, generates an in-plane magnetic field that can invert the SOT-induced switching chirality, enabling on-the-fly complete Boolean logic operations. Additionally, the device demonstrated good reliability, repeatability, and reproducibility during logic operations. Our work demonstrates programmable and scalable spin-logic functions in a single device, offering a new approach for spin-logic operations in an IMC architecture.