自旋波电子学研究进展-中国材料进展

文章信息/Info

作者:: 盛路通1; 陈济雷1; 2; 于海明1; （1. 北京航空航天大学集成电路科学与工程学院，北京 100191）（2．南方科技大学深圳量子科学与工程研究院，广东深圳 518055）

Author(s):: SHENG Lutong1; CHEN Jilei1; 2; YU Haiming1; （1.School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, China) （2.Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China)

Keywords:: magnon spintronics; spin waves; magnons; logic devices; magnonic crystals

摘要:: 近年来，传统的半导体工艺遭遇瓶颈，摩尔定律逐渐失效，亟需寻找下一代新型电子元器件。伴随着自旋波电子学的蓬勃发展，电子自旋作为一种信息传输的媒介引起了人们的广泛关注。自旋波是电子自旋的集体进动模式，是磁振子的宏观体现。自旋波电子学旨在利用自旋波的特性实现低功耗的信息器件制备，为下一代电子元器件的发展和应用提供可靠的理论基础和技术路线。自旋波电子学包含十分丰富的物理学知识和现象，自旋波本身可以被限制和引导，也可以被放大。根据激发方式的不同，自旋波也可以产生不同程度的相干性。聚焦于相干自旋波，着重介绍了自旋波电子学近年来的研究进展，包括磁振子晶体、自旋波与电流的相互转换、交换自旋波的激发和探测、基于自旋波的多体系耦合和基于自旋波的逻辑计算器件等，并对自旋波电子学的发展方向做出了展望。

Abstract:: In recent years, the traditional semiconductor technology has encountered bottlenecks, and the rate of Moore’s Law has slowed down. It is urgent for people to find the next generation of new electronic components. With the vigorous development of spintronics, electron spin has attracted extensive attention as a medium for information transmission. In the field of spintronics, spin waves, as collective precessions of electron spins, show many advantages beyond electronic devices. Magnonics aims to use the characteristics of spin waves to realize the fabrication of low-power computing devices, providing a reliable theoretical basis and technical route for the development and application of next-generation electronic components. The physics of spin waves is very rich, for example, spin waves can be confined and guided, and they can also be amplified. Spin waves may be generated with variable degrees of coherency, depending on the excitation methods. This article mainly focuses on coherent spin waves, and we review the recent research progress of spin waves, including magnonic crystals, the conversion of spin waves and currents, the excitation and detection of the exchange spin waves, the coupled systems based on the spin waves, spin-wave logic devices. And the development direction of spin wave electronics is also prospected.