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Spin-Orbit Torque in Van der Waals-Layered Materials and Heterostructures
Advanced Science ( IF 14.3 ) Pub Date : 2021-07-29 , DOI: 10.1002/advs.202100847
Wei Tang 1 , Haoliang Liu 2 , Zhe Li 2 , Anlian Pan 3 , Yu-Jia Zeng 1
Affiliation  

Spin-orbit torque (SOT) opens an efficient and versatile avenue for the electrical manipulation of magnetization in spintronic devices. The enhancement of SOT efficiency and reduction of power consumption are key points for the implementation of high-performance SOT devices, which strongly rely on the spin-orbit coupling (SOC) strength and magnetic properties of ferromagnetic/non-magnetic heterostructures. Recently, van der Waals-layered materials have shown appealing properties for use in efficient SOT applications. On the one hand, transition-metal dichalcogenides, topological insulators, and graphene-based heterostructures possess appreciable SOC strength. This feature can efficiently converse the charge current into spin current and result in large SOT. On the other hand, the newly discovered layered magnetic materials provide ultra-thin and gate-tunable ferromagnetic candidates for high-performance SOT devices. In this review, the latest advancements of SOT research in various layered materials are summarized. First, a brief introduction of SOT is given. Second, SOT studies of various layered materials and heterostructures are summarized. Subsequently, progresses on SOT-induced magnetization switching are presented. Finally, current challenges and prospects for future development are suggested.

中文翻译:

范德华层状材料和异质结构中的自旋轨道扭矩

自旋轨道扭矩(SOT)为自旋电子器件中磁化的电操纵开辟了一条高效且通用的途径。SOT效率的提高和功耗的降低是高性能SOT器件实现的关键点,其强烈依赖于铁磁/非磁异质结构的自旋轨道耦合(SOC)强度和磁性能。最近,范德华层状材料在高效 SOT 应用中表现出了极具吸引力的特性。一方面,过渡金属二硫属化物、拓扑绝缘体和石墨烯基异质结构具有相当大的 SOC 强度。此功能可以有效地将充电电流转换为自旋电流并产生较大的 SOT。另一方面,新发现的层状磁性材料为高性能 SOT 器件提供了超薄且栅极可调的铁磁候选材料。本文综述了SOT在各种层状材料方面研究的最新进展。首先对SOT进行简单介绍。其次,总结了各种层状材料和异质结构的SOT研究。随后,介绍了 SOT 引起的磁化翻转的进展。最后,提出当前面临的挑战和未来发展的前景。
更新日期:2021-09-22
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