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Chern insulator phase realized in dual-gate-tuned MnBi2Te4 thin films grown by molecular beam epitaxy
Yunhe Bai, Yuanzhao Li, Ruixuan Liu +19
The intrinsic magnetic order, large topological-magnetic gap and rich topological phases make MnBi2Te4 a wonderful platform to study exotic topological quantum states such as axion…
Sub-nanometer depth resolution and single dopant visualization achieved by tilt-coupled multislice electron ptychography
Zehao Dong, Yang Zhang, Chun-Chien Chiu +8
Real-space imaging of three-dimensional atomic structures is a critical yet challenging task in materials science. Although scanning transmission electron microscopy has achieved s…
Towards the Quantized Anomalous Hall effect in AlO-capped MnBiTe
Yongqian Wang, Bohan Fu, Yongchao Wang +9
The quantum anomalous Hall effect in layered antiferromagnet MnBiTe harbors a rich interplay between magnetism and topology, holding a significant promise for low-power ele…
Antiferromagnetic Quantum Anomalous Hall Effect Modulated by Spin Flips and Flops
Zichen Lian, Yongchao Wang, Yongqian Wang +11
The interplay between nontrivial band topology and layered antiferromagnetism in MnBi2Te4 has opened up a new avenue for exploring topological phases of matter. Representative exam…
Interplay between electronic dephasing and localization in finite-sized Chern insulator
Yunhe Bai, Yuanzhao Li, Jianli Luan +14
Anderson localization is anticipated to play a pivotal role in the manifestation of the quantum anomalous Hall effect, akin to its role in conventional quantum Hall effects. The si…
Correlation between magnetic domain structures and quantum anomalous Hall effect in epitaxial MnBi2Te4 thin films
Yang Shi, Yunhe Bai, Yuanzhao Li +16
We use magnetic force microscopy (MFM) to study spatial uniformity of magnetization of epitaxially grown MnBi2Te4 thin films. Compared to films which exhibit no quantum anomalous H…