Qiu Gang, Yang Hung-Yu, Chong Su Kong, Cheng Yang, Tai Lixuan, Wang Kang L
Department of Electrical and Computer Engineering, University of California, Los Angeles, CA 90095, USA.
Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA.
Nanomaterials (Basel). 2023 Sep 27;13(19):2655. doi: 10.3390/nano13192655.
Magnetic topological insulators (MTIs) are a group of materials that feature topological band structures with concurrent magnetism, which can offer new opportunities for technological advancements in various applications, such as spintronics and quantum computing. The combination of topology and magnetism introduces a rich spectrum of topological phases in MTIs, which can be controllably manipulated by tuning material parameters such as doping profiles, interfacial proximity effect, or external conditions such as pressure and electric field. In this paper, we first review the mainstream MTI material platforms where the quantum anomalous Hall effect can be achieved, along with other exotic topological phases in MTIs. We then focus on highlighting recent developments in modulating topological properties in MTI with finite-size limit, pressure, electric field, and magnetic proximity effect. The manipulation of topological phases in MTIs provides an exciting avenue for advancing both fundamental research and practical applications. As this field continues to develop, further investigations into the interplay between topology and magnetism in MTIs will undoubtedly pave the way for innovative breakthroughs in the fundamental understanding of topological physics as well as practical applications.
磁性拓扑绝缘体（MTIs）是一类具有拓扑能带结构并同时具备磁性的材料，这可为自旋电子学和量子计算等各种应用的技术进步提供新机遇。拓扑与磁性的结合在MTIs中引入了丰富多样的拓扑相，这些拓扑相可通过调整诸如掺杂分布、界面近邻效应等材料参数，或压力和电场等外部条件来进行可控操纵。在本文中，我们首先回顾了能够实现量子反常霍尔效应的主流MTI材料平台，以及MTIs中的其他奇异拓扑相。然后，我们着重突出了在有限尺寸极限、压力、电场和磁近邻效应下调制MTI拓扑性质的最新进展。MTIs中拓扑相的操纵为推进基础研究和实际应用提供了一条令人兴奋的途径。随着该领域的不断发展，对MTIs中拓扑与磁性相互作用的进一步研究无疑将为拓扑物理的基础理解以及实际应用中的创新性突破铺平道路。
