7 papers
Revisiting quadratic band crossing: from interaction-driven instability to intrinsic topology
Yadong Jiang, Linghao Huang, Zhaochen Liu +2
The realization of robust quantum anomalous Hall (QAH) phases at elevated temperatures remains a central challenge in condensed matter physics. While quadratic band crossing points…
Unveiling the impact of anti-site defects in magnetic transitions of few-layer MnBi2Te4 by operando heating
Xinyu Chen, Jingjing Gao, Shuang Wu +11
As the first experimentally discovered intrinsic magnetic topological insulator, MnBi2Te4 has attracted widespread attentions, providing a unique platform for the exploration of to…
Orbital Description of Landau Levels
Huan Wang, Rui Shi, Zhaochen Liu +1
The pursuit of a lattice analogue for Landau levels has been a central theme in condensed matter physics. Although the correspondence between Chern bands and the lowest Landau leve…
Anisotropic moiré band flattening in twisted bilayers of M-valley MXenes
Kejie Bao, Huan Wang, Zhaochen Liu +1
Experimental studies on moiré materials have predominantly focused on twisted hexagonal lattice with low-energy states near the - or K-points, where the electronic dispersion…
Quantized Topological States and Parity Anomaly in Intrinsic Quantum Anomalous Hall Insulator MnBi2Te4
Zhongxun Guo, Jingjing Gao, Zhiwei Huang +22
When thinned down to just a few atomic layers, the layered magnetic topological insulator MnBi2Te4 offers an exceptional platform for exploring a wide range of topological phenomen…
Layer-Dependent Quantum Anomalous Hall Effect in Rhombohedral Graphene
Zhaochen Liu, Jing Wang
The quantum anomalous Hall (QAH) effect, first proposed in the Haldane model, is a paradigmatic example of the application of band topology in condensed matter physics. The recent…