Spin excitations in the intrinsic magnetic topological insulator MnBi2Te4
Magnetic topological insulators (TI) brings many new opportunities to realize exotic topological phenomena through magnetically gapping the topological surface states. In contrast to the inhomogeneity and challenge in magnetic impurity doped TIs, intrinsic magnetic TIs are expected to provide a clean platform to explore topological effects with time-reversal symmetry breaking. Although many magnetic topological materials have been theoretically proposed, the intrinsic magnetic topological materials haven't been realized until the discovery of MnBi2Te4 in recently. First-principles calculations and neutron diffractions suggest the magnetic ground state is A-type antiferromagnetic (AFM) phase with ferromagnetic surfaces, giving an ideal platform for emergent magnetic topological phenomena, such as topological axion state, minimal ideal Weyl semimetal, QAH effect, two-dimensional ferromagnetism,etc. To understand the magnetic interactions and thus the interplay between magnetism and topological states in MnBi2Te4, here we propose to do inelastic neutron scattering experiments to measure its spin excitations.We apply 8 days beamtime on IN8 thermal triple-axis neutron spectrometer.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
Huiqian Luo; IVANOV Alexandre; Yixi Su; WANG Xiao and ZENG Zhenyuan. (2021). Spin excitations in the intrinsic magnetic topological insulator MnBi2Te4. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1646
This data is not yet public
This data is not yet public
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