物理学进展2025，Vol.45Issue(3)：132-150,19.DOI:10.13725/j.cnki.pip.2025.03.003
轴子绝缘体及其输运特性
Axion Insulator and Transport Property
摘要
Abstract
Research on axion insulators in condensed matter physics has generated widespread attention in recent years.Axion insulators exhibit an electromagnetic response similar to that of the hypothetical elementary particle-axion-proposed in high-energy physics,leading to phenomena such as half-quantized surface Hall conductivity or topological magne-toelectric effects in the system.Recently,transport experiments on three-dimensional mag-netic topological insulator heterojunctions and intrinsic magnetic topological insulators like MnBi2Te4 have revealed signatures of the existence of axion insulators.However,precise mea-surement of the half-quantized electromagnetic response of axion insulators remains challeng-ing.In this review,we summarize the theoretical and experimental progress in axion insulator research within magnetic topological insulating materials.We discuss the excitation of half-quantized edge currents in axion insulators due to the bulk-boundary correspondence,as well as a transport theory based on half-magnetic topological insulators for half-quantized Hall con-ductivity.Finally,we explore disorder-induced phase transitions in axion insulators,including the universality classes of two-dimensional quantum Hall-like conductivity transitions on the surface,and propose methods to detect axion insulators using the universal characteristics of these phase transitions.关键词
轴子绝缘体/无序/半量子化/古斯-汉欣位移/拓扑磁电效应/量子输运Key words
axion insulator/disorder/Half-quantized/Goos-Hanchen shift/topological mag-netoelectric effect/quantum transport分类
电子信息工程引用本文复制引用
李思晴,丁悦然,陈垂针..轴子绝缘体及其输运特性[J].物理学进展,2025,45(3):132-150,19.基金项目
感谢国家重点研发计划(No.2022YFA1403700)、江苏省自然科学基金(No.BK20230066)和江苏双创项目(JSS-CTD202209)的资助. （No.2022YFA1403700）
