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摘要

本征磁性拓扑绝缘体非平庸拓扑态和磁有序的相互作用使其具备量子反常霍尔效应和轴子绝缘体等奇异物理性质, 在低功耗拓扑自旋电子器件及拓扑量子计算等方面展现广泛应用前景. 自2019年第一种本征磁性拓扑绝缘体MnBi ₂Te ₄在实验上被发现以来, 该材料体系领域迅速吸引了大量研究者的目光, 引发了研究热潮. 本文将从MnBi ₂Te ₄基本性质出发, 介绍近期本征磁性拓扑绝缘体MnBi ₂Te ₄的一些重要研究成果, 着重阐述MnBi ₂Te ₄系列的量子反常霍尔效应、轴子绝缘体态和马约拉纳零能模等拓扑量子态, 并列举该材料体系其他研究方向及目前存在的问题. 最后, 总结并展望MnBi ₂Te ₄的下一步研究, 期望为相关领域人员的研究提供一定参考价值.

关键词:

Abstract

The interaction between non-trivial topological states and the magnetic order of intrinsic magnetic topological insulators gives rise to various exotic physical properties, including the quantum anomalous Hall effect and axion insulator. These materials possess great potential applications in low-power topological spintronic devices and topological quantum computation. Since the first intrinsic magnetic topological insulator, MnBi ₂Te ₄, was discovered in 2019, this material system has received significant attention from researchers and sparked a research boom. This paper begins with discussing the fundamental properties of MnBi ₂Te ₄and then turns to important research findings related to this intrinsic magnetic topological insulator. Specifically, it focuses on the quantum anomalous Hall effect, axion insulating state, and Majorana zero energy mode exhibited by the MnBi ₂Te ₄series. Furthermore, this paper highlights other research directions and current challenges associated with this material system. Finally, this paper provides a summary and outlook for future research on MnBi ₂Te ₄, aiming to offer valuable references for researchers in related fields.

Keywords:

intrinsic magnetic topological insulators/
MnBi₂Te₄/
topological quantum states

作者及机构信息

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通信作者:江天,tjiang@nudt.edu.cn

基金项目:高性能计算国家重点实验室自主开放课题(批准号: 202201-04)资助的课题.

Authors and contacts

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Corresponding author:Jiang Tian,tjiang@nudt.edu.cn

Funds:Project supported by the Independent and Open Subject Fund from State Key Laboratory of High Performance Computing, China (Grant No. 202201-04).

文章全文: translate this paragraph

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施引文献

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