Colloquium: Quantum anomalous Hall effect

CZ Chang, CX Liu, AH MacDonald - Reviews of Modern Physics, 2023 - APS
The quantum Hall (QH) effect, quantized Hall resistance combined with zero longitudinal
resistance, is the characteristic experimental fingerprint of Chern insulators—topologically …

Electric control of a canted-antiferromagnetic Chern insulator

J Cai, D Ovchinnikov, Z Fei, M He, T Song, Z Lin… - Nature …, 2022 - nature.com
The interplay between band topology and magnetism can give rise to exotic states of matter.
For example, magnetically doped topological insulators can realize a Chern insulator that …

Recent progress in MnBi2nTe3n+1 intrinsic magnetic topological insulators: crystal growth, magnetism and chemical disorder

C Hu, T Qian, N Ni - National Science Review, 2024 - academic.oup.com
The search for magnetic topological materials has been at the forefront of condensed matter
research for their potential to host exotic states such as axion insulators, magnetic Weyl …

Evidence for a Magnetic-Field-Induced Ideal Type-II Weyl State in Antiferromagnetic Topological Insulator

SH Lee, D Graf, L Min, Y Zhu, H Yi, S Ciocys, Y Wang… - Physical Review X, 2021 - APS
The discovery of Weyl semimetals (WSMs) has fueled tremendous interest in condensed
matter physics. The realization of WSMs requires the breaking of either inversion symmetry …

Ferromagnetic obtained with low-concentration Sb doping: A promising platform for exploring topological quantum states

YD Guan, CH Yan, SH Lee, X Gui, W Ning, JL Ning… - Physical Review …, 2022 - APS
The tuning of the magnetic phase, chemical potential, and structure is crucial to observe
diverse exotic topological quantum states in Mn Bi 2 Te 4 (Bi 2 Te 3) m (m= 0–3). Here we …

Anomalous Landau quantization in intrinsic magnetic topological insulators

SK Chong, C Lei, SH Lee, J Jaroszynski, Z Mao… - Nature …, 2023 - nature.com
The intrinsic magnetic topological insulator, Mn (Bi1− xSbx) 2Te4, has been identified as a
Weyl semimetal with a single pair of Weyl nodes in its spin-aligned strong-field …

Thermal and thermoelectric properties of an antiferromagnetic topological insulator

H Zhang, CQ Xu, SH Lee, ZQ Mao, X Ke - Physical Review B, 2022 - APS
The discovery of an intrinsic antiferromagnetic topological insulator (AFMTI) in MnBi 2 Te 4
has attracted intense attention, most of which lies in its electrical properties. In this paper, we …

Revealing Fermi surface evolution and Berry curvature in an ideal type-II Weyl semimetal

Q Jiang, JC Palmstrom, J Singleton, S Chikara… - Nature …, 2024 - nature.com
In type-II Weyl semimetals (WSMs), the tilting of the Weyl cones leads to the coexistence of
electron and hole pockets that touch at the Weyl nodes. These electrons and holes …

Temperature-dependent and magnetism-controlled Fermi surface changes in magnetic Weyl semimetals

N Zhang, X Ding, F Zhan, H Li, H Li, K Tang, Y Qian… - Physical Review …, 2023 - APS
The coupling between band structure and magnetism can lead to intricate Fermi surface
modifications. Here we report on the comprehensive study of the Shubnikov–de Haas (SdH) …

Evidence of magnetic fluctuation induced Weyl semimetal state in the antiferromagnetic topological insulator

SH Lee, D Graf, R Robinson, J Singleton… - Physical Review B, 2023 - APS
We report c-axis transport studies on magnetic topological insulators Mn (Bi 1− x Sb x) 2 Te
4. We performed systematic c-axis magnetoresistivity measurements under high magnetic …