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Intertwined Topological and Magnetic Orders in Atomically Thin Chern Insulator MnBi2Te4
Dmitry Ovchinnikov, Xiong Huang, Zhong Lin +15
The interplay between band topology and magnetic order plays a key role in quantum states of matter. MnBi2Te4, a van der Waals magnet, has recently emerged as an exciting platform…
Topological Inverse Faraday Effect in Weyl Semimetals
Yang Gao, Chong Wang, Di Xiao
We demonstrate that in Weyl semimetals, the momentum-space helical spin texture can couple to the chirality of the Weyl node to generate a frequency-independent magnetization in re…
Thermodynamics of Energy Magnetization
Yinhan Zhang, Yang Gao, Di Xiao
We construct the thermodynamics of energy magnetization in the presence of gravitomagnetic field. We show that the free energy must be modified to account for the modification of t…
Demonstration of Dissipative Quasihelical Edge Transport in Quantum Anomalous Hall Insulators
Shu-Wei Wang, Di Xiao, Ziwei Dou +6
Doping a topological insulator (TI) film with transition metal ions can break its time-reversal symmetry and lead to the realization of the quantum anomalous Hall (QAH) effect. Pri…
Electric Polarization in Inhomogeneous Crystals
Yiqiang Zhao, Yang Gao, Di Xiao
We derive the charge density up to second order in spatial gradient in inhomogeneous crystals using the semiclassical coarse graining procedure based on the wave packet method. It…
Correlated Insulating States at Fractional Fillings of the WS2/WSe2 Moiré Lattice
Xiong Huang, Tianmeng Wang, Shengnan Miao +9
Moiré superlattices of van der Waals materials, such as twisted graphene and transitional metal dichalcogenides, have recently emerged as a fascinating platform to study strongly c…
Interface-Induced Sign Reversal of the Anomalous Hall Effect in Magnetic Topological Insulator Heterostructures
Fei Wang, Xuepeng Wang, Yi-Fan Zhao +10
The Berry phase picture provides important insights into the electronic properties of condensed matter systems. The intrinsic anomalous Hall (AH) effect can be understood as a cons…
Direct observation of 2D magnons in atomically thin CrI
John Cenker, Bevin Huang, Nishchay Suri +8
Exfoliated chromium triiodide (CrI) is a layered van der Waals (vdW) magnetic insulator that consists of ferromagnetic layers coupled through antiferromagnetic interlayer excha…
Layer-Resolved Magnetic Proximity Effect in van der Waals Heterostructures
Ding Zhong, Kyle L. Seyler, Xiayu Linpeng +8
Magnetic proximity effects are crucial ingredients for engineering spintronic, superconducting, and topological phenomena in heterostructures. Such effects are highly sensitive to…