AI 中文总结
该研究通过手性不对称开关，制备出无初始化、超低功耗的可编程自旋轨道转矩逻辑器件，可在单个器件内实现全部16种布尔逻辑运算，还研发出多种全电学自旋基级联计算器件，为下一代存内计算芯片开发提供了新方向。
AI 中文摘要
自旋逻辑对开发高性能、非冯·诺依曼架构的人工智能芯片具有重大意义。其中，可编程自旋轨道转矩逻辑的优势尤为突出，它可在单个器件内以无初始化、低功耗、可扩展的方式实现全部16种布尔逻辑运算，然而尽管经过二十多年的不懈努力，这一目标仍面临挑战。本文利用手性不对称开关，成功演示了一种无初始化、低功耗的可编程自旋轨道转矩逻辑器件，该器件仅需三个输入，即可在单个器件内实现全部16种布尔逻辑运算，功耗仅为<1 fJ/bit。我们还提出了首个无初始化、全电学自旋基级联计算器件，包括半加器、三级全加器、两级全加器以及传输/非选择器。这些紧凑且可扩展的计算器件基于Ta/FeCoB双层膜的手性不对称自旋轨道转矩开关实现，该双层膜具有显著的垂直Dzyaloshinskii-Moriya相互作用场。上述研究结果为开发基于手性不对称自旋轨道转矩开关的下一代高性能大规模存内计算芯片开辟了新的途径。
英文摘要
Spin logic is of great interest for the development of high-performance, non-Von Neumann artificial intelligence chips. Of particular advantage is the programmable spin-orbit torque logic that can achieve the complete set of the 16 Boolean logic operations within a single device in an initialization-free, low-power, and scalable manner, which is, however, a challenge despite remarkable efforts over more than two decades. Here, utilizing chirally asymmetric switching, we demonstrate an initialization-free, low-power, programmable spin-orbit torque logic device that is capable of the complete set of 16 Boolean logic operations within a single device with only three inputs and ultralow power of < 1 fJ/bit. We also propose the first initialization-free, all-electrical spin-based cascading computing devices, including a half adder, a three-level full adder, a two-level full adder, and a Transfer/NOT selector. These compact and scalable computing devices are enabled by the chirally asymmetric spin-orbit torque switching of a Ta/FeCoB bilayer with a significant perpendicular Dzyaloshinskii-Moriya interaction field. These results pave an intriguing way for the development of next-generation high-performance large-scale in-memory computing chips based on chirally asymmetric spin-orbit torque switching.
