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The antiferromagnetic topological insulator MnBi2Te4 (MBT) exhibits an ideal platform to study exotic topological phenomena and magnetic properties. The transport signatures of magnetic phase transitions in the MBT family materials have…

Mesoscale and Nanoscale Physics · Physics 2022-06-13 Shuwan Liu , Su Kong Chong , Dongwook Kim , Amit Vashist , Rohit Kumar , Seng Huat Lee , Kang L. Wang , Zhiqiang Mao , Feng Liu , Vikram V. Deshpande

Intrinsic magnetic topological insulators from MnBi2Te4 family promise realization of axion insulator, a theoretically predicted state of matter capable to mutually convert electric and magnetic signals, and whose properties are reminiscent…

Materials Science · Physics 2020-11-17 Igor Altfeder , Robert C. Walko , Seng Huat Lee , Zhiqiang Mao

The discovery of an intrinsic antiferromagnetic topological insulator (AFM-TI) in MnBi$_2$Te$_4$ has attracted intense attention, most of which lies on its electrical properties. In this paper, we report electronic, thermal, and…

Materials Science · Physics 2022-05-25 H. Zhang , C. Q. Xu , S. H. Lee , Z. Q. Mao , X. Ke

Topological materials featuring exotic band structures, unconventional current flow patterns, and emergent organizing principles offer attractive platforms for the development of next-generation transformative quantum electronic…

With topological materials being billed as the key to a new generation of nanoelectronics via either functional real-space topological structures (domain walls, skyrmions etc.) or via momentum-space topology (topological insulators),…

Mesoscale and Nanoscale Physics · Physics 2025-04-11 Y. Xu , D. Kurebayashi , D. Zhang , P. Schoenherr , L. Li , Z. Yue , W. J. Ren , M. -G. Han , Y. Zhu , Z. Cheng , X. Wang , Oleg A. Tretiakov , J. Seidel

Intrinsic magnetic topological insulators provide an ideal platform to achieve various exciting physical phenomena. However, this kind of materials and related research are still very rare. In this work, we reported the electronic and…

Intrinsic magnetic topological insulators offers an ideal platform to explore exotic topological phenomena, such as axion electrodynamics, quantum anomalous Hall (QAH) effect and Majorana edge modes. However, these emerging new physical…

Mesoscale and Nanoscale Physics · Physics 2025-04-09 Yadong Jiang , Huan Wang , Kejie Bao , Jing Wang

The combination of topology and magnetism is attractive to produce exotic quantum matters, such as the quantum anomalous Hall state, axion insulators and the magnetic Weyl semimetals. MnBi2Te4, as an intrinsic magnetic topological…

Recently, the intrinsic magnetic topological insulator MnBi2Te4 has attracted enormous research interest due to the great success in realizing exotic topological quantum states, such as the quantum anomalous Hall effect (QAHE), axion…

Mesoscale and Nanoscale Physics · Physics 2022-05-20 Jun Ge , Yanzhao Liu , Pinyuan Wang , Zhiming Xu , Jiaheng Li , Hao Li , Zihan Yan , Yang Wu , Yong Xu , Jian Wang

Intrinsic magnetic topological insulators (MTIs) MnBi2Te4 and MnBi2Te4/(Bi2Te3)n are expected to realize the high-temperature quantum anomalous Hall effect (QAHE) and dissipationless electrical transport. Extensive efforts have been made on…

The interplay between magnetism and non-trivial topology in magnetic topological insulators (MTI) is expected to give rise to a variety of exotic topological quantum phenomena, such as the quantum anomalous Hall (QAH) effect and the…

Magnetic topological insulators (TIs) with nontrivial topological electronic structure and broken time-reversal symmetry exhibit various exotic topological quantum phenomena. The realization of such exotic phenomena at high temperature is…

The interplay of magnetism and topology is a key research subject in condensed matter physics and material science, which offers great opportunities to explore emerging new physics, like the quantum anomalous Hall (QAH) effect, axion…

Materials Science · Physics 2019-06-18 Jiaheng Li , Yang Li , Shiqiao Du , Zun Wang , Bing-Lin Gu , Shou-Cheng Zhang , Ke He , Wenhui Duan , Yong Xu

Magnetic topological insulators (MTIs) offer a combination of topologically nontrivial characteristics and magnetic order and show promise in terms of potentially interesting physical phenomena such as the quantum anomalous Hall (QAH)…

The intricate interplay between nontrivial topology and magnetism in two-dimensional (2D) materials has led to the emergence of many novel phenomena and functionalities. An outstanding example is the quantum anomalous Hall (QAH) effect,…

Mesoscale and Nanoscale Physics · Physics 2020-01-24 Chang Liu , Yongchao Wang , Hao Li , Yang Wu , Yaoxin Li , Jiaheng Li , Ke He , Yong Xu , Jinsong Zhang , Yayu Wang

Nonlinear electronic transport has emerged as a powerful probe of the quantum geometry in topological quantum materials, where the band topology and broken symmetries facilitate power law current voltage responses beyond Ohms law. While…

Magnetic topological materials, in which the time-reversal symmetry is broken, host various exotic quantum phenomena, including the quantum anomalous Hall effect, axion insulator states, and Majorana fermions. The study of magnetic…

Topological magnetoelectric effect (TME) is a hallmark response of the topological field theory, which provides a paradigm shift in the study of emergent topological phenomena. However, its direct observation is yet to be realized due to…

Mesoscale and Nanoscale Physics · Physics 2022-08-02 Yuhao Wan , Jiayu Li , Qihang Liu

The intrinsic magnetic topological insulators MnBi$_2$X$_4$ (X = Se, Te) are promising candidates in realizing various novel topological states related to symmetry breaking by magnetic order. Although much progress had been made in…

Recently, the MnBi$_2$Te$_4$ material has been proposed as the first intrinsic antiferromagnetic topological insulator (AFMTI), where the interplay between magnetism and topology induces several fascinating topological phases, such as the…

Strongly Correlated Electrons · Physics 2020-11-26 Wei-Wei Yang , Yin Zhong , Hong-Gang Luo