8 papers
Observation of interaction-induced fast Thouless pumping of solitons
Yuqing Li, Jinxiong Jia, Yunfei Wang +7
Thouless pumping provides a paradigmatic platform for studying the effects of interactions on topological transport in periodically driven systems. However, most studies have been…
Quantum Anomalous Hall Effect in Flat Bands with Paramagnetism
Yedi Shen, Sanyi You, Zhenhua Qiao +1
Quantum anomalous Hall effect has been widely explored in both ferromagnetic and antiferromagnetic systems. Here, we propose an interaction-driven paramagnetic quantum anomalous Ha…
Fully First-Principles Approach in Studying Topological Magnons
Xiaoqiang Liu, Ji Feng, Zhenhua Qiao +1
We develop a fully first-principles approach for spin dynamics based on density functional perturbation theory. We demonstrate that the magnon wavefunction can be expressed by a se…
Space-time Supercrystals from Non-Abelian Electric Translation Symmetries
Jian Wang, James Jun He, Qian Niu
Electronic supercrystals can form in spatial or temporal dimensions where traditional mechanisms usually require many-body interactions, such as Wigner crystals or discrete time cr…
Chern Number Tunable Quantum Anomalous Hall Effect in Compensated Antiferromagnets
Wenhao Liang, Jiaqi An, Zeyu Li +3
We propose to realize the quantum anomalous Hall effect (QAHE) in two-dimensional compensated antiferromagnets without net spin magnetization.} We consider antiferromagnetic MnBi$_…
Nonreciprocal phonons in PT-symmetric antiferromagnet
Yafei Ren, Daniyar Saparov, Qian Niu
Phonon nonreciprocity, indicating different transport properties along opposite directions, has been observed in experiments under a magnetic field. We show that nonreciprocal acou…