718 citations · 1.1k across the 21 of their papers we have counts for
8 papers · 1 filter
Switching Chern number by sliding and gating in alternately twisted tetralayer MoTe2
Xiao-Wei Zhang, Kaijie Yang, Xiaodong Xu +2
Switching the bulk Chern number in topological materials is of central importance for the design of topological electronic devices. Motivated by recent observations of integer and…
Atomically Resolved Acoustic Dynamics Coupled with Magnetic Order in a van der Waals Antiferromagnet
Faran Zhou, Kyle Hwangbo, Sung Soo Ha +22
Magnetoelastic coupling in van der Waals (vdW) magnetic materials enables a unique interplay between the spin and lattice degrees of freedom. Characterizing the elastic responses w…
Layerwise Stratification and Band Reordering in Twisted Multilayer MoTe
Yueyao Fan, Xiao-Wei Zhang, Yusen Ye +5
We introduce a generalizable, physics informed strategy for generating training data that enables a machine learning force field accurate over a broad range of twist angles and sta…
Twist-angle transferable continuum model and second flat Chern band in twisted MoTe2 and WSe2
Xiao-Wei Zhang, Kaijie Yang, Chong Wang +3
We develop a twist-angle transferable continuum model for twisted transition metal dichalcogenide (tTMD) homobilayers, using tMoTe2 and tWSe2 as examples. All model parameters are…
Geometric Origin of Phonon Magnetic Moment in Dirac Materials
Wenqin Chen, Xiao-Wei Zhang, Ting Cao +2
We develop a theory for the phonon magnetic moment in doped Dirac materials, treating phonons as emergent gauge and gravitational fields coupled to Dirac fermions in curved space.…
Gauge theory of giant phonon magnetic moment in doped Dirac semimetals
Wenqin Chen, Xiao-Wei Zhang, Ying Su +3
We present a quantum theory of phonon magnetic moment in doped Dirac semimetals. Our theory is based on an emergent gauge field approach to the electron-phonon coupling, applicable…
Polarization-driven band topology evolution in twisted MoTe and WSe
Xiao-Wei Zhang, Chong Wang, Xiaoyu Liu +3
Motivated by recent experimental observations of opposite Chern numbers in -type twisted MoTe and WSe homobilayers, we perform large-scale density-functional-theory (DFT…
Gate-tunable phonon magnetic moment in bilayer graphene
Xiao-Wei Zhang, Yafei Ren, Chong Wang +2
We develop a first-principles quantum scheme to calculate the phonon magnetic moment in solids. As a showcase example, we apply our method to study gated bilayer graphene, a materi…