Magnetic-field-induced robust zero Hall plateau state in MnBi₂Te₄ Chern insulator.

ABSTRACT: The intrinsic antiferromagnetic topological insulator MnBi₂Te₄ provides an ideal platform for exploring exotic topological quantum phenomena. Recently, the Chern insulator and axion insulator phases have been realized in few-layer MnBi₂Te₄ devices at low magnetic field regime. However, the fate of MnBi₂Te₄ in high magnetic field has never been explored in experiment. In this work, we report transport studies of exfoliated MnBi₂Te₄ flakes in pulsed magnetic fields up to 61.5 T. In the high-field limit, the Chern insulator phase with Chern number C = -1 evolves into a robust zero Hall resistance plateau state. Nonlocal transport measurements and theoretical calculations demonstrate that the charge transpo

SUBMITTER: Liu C 

PROVIDER: S-EPMC8324822 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature