文章信息/Info

Title:

Recent Development of Magnon Spintronics

文章編號:

1674-3962(2021)12-0939-09

作者:

盛路通1; 陳濟雷1; 2; 于海明1

（1. 北京航空航天大學集成電路科學與工程學院，北京 100191）（2．南方科技大學 深圳量子科學與工程研究院，廣東 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)

關鍵詞:

自旋波電子學; 自旋波; 磁振子; 邏輯器件; 磁振子晶體

Keywords:

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

分類號:

O469

DOI:

10.7502/j.issn.1674-3962.202106023

文獻標志碼:

A

摘要:

近年來，傳統的半導體工藝遭遇瓶頸，摩爾定律逐漸失效，亟需尋找下一代新型電子元器件。伴隨著自旋波電子學的蓬勃發展，電子自旋作為一種信息傳輸的媒介引起了人們的廣泛關注。自旋波是電子自旋的集體進動模式，是磁振子的宏觀體現。自旋波電子學旨在利用自旋波的特性實現低功耗的信息器件制備，為下一代電子元器件的發展和應用提供可靠的理論基礎和技術路線。自旋波電子學包含十分豐富的物理學知識和現象，自旋波本身可以被限制和引導，也可以被放大。根據激發方式的不同，自旋波也可以產生不同程度的相干性。聚焦于相干自旋波，著重介紹了自旋波電子學近年來的研究進展，包括磁振子晶體、自旋波與電流的相互轉換、交換自旋波的激發和探測、基于自旋波的多體系耦合和基于自旋波的邏輯計算器件等，并對自旋波電子學的發展方向做出了展望。

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.