718 citations · 1.1k across the 21 of their papers we have counts for
21 papers
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…
Van Hove Singularity-Driven Topological Magnetism in Twisted MoTe2
Heonjoon Park, Julian Stewart, Xiao-Wei Zhang +15
Van Hove singularities (vHSs) strongly amplify electron interactions and can stabilize correlated phases in topological bands. Here we report signatures of topological magnetism in…
Robust valley-polarized excitonic Mott states and doublons enabled by stacking-controlled moiré geometry
Hao-Tien Chu, Shou-Chien Chiu, Meng-Che Yeh +12
Atomically-thin moiré superlattices offer an optically accessible platform for interacting bosons, where strong onsite repulsion suppresses double occupancy and supports e…
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…
Orbital Magnetization of Correlated States in Twisted Bilayer Transition Metal Dichalcogenides
Xiaoyu Liu, Chong Wang, Haoran Chen +3
Recent observations of quantum anomalous Hall effects in moiré systems have revealed the emergence of interaction-driven ferromagnetism with significant orbital contributions. To c…
Visualizing Electronic Structure of Twisted Bilayer MoTe2 in Devices
Cheng Chen, William Holtzmann, Xiao-Wei Zhang +12
The pursuit of emergent quantum phenomena lies at the forefront of modern condensed matter physics. A recent breakthrough in this arena is the discovery of the fractional quantum a…
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…
Universal Magnetic Phases in Twisted Bilayer MoTe
Weijie Li, Evgeny Redekop, Christiano Wang Beach +15
Twisted bilayer MoTe (tMoTe) has emerged as a robust platform for exploring correlated topological phases, notably supporting fractional Chern insulator (FCI) states at zer…
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.…
Ferromagnetism and Topology of the Higher Flat Band in a Fractional Chern Insulator
Heonjoon Park, Jiaqi Cai, Eric Anderson +18
The recent observation of the fractional quantum anomalous Hall effect in moiré fractional Chern insulators provides an opportunity to investigate zero magnetic field anyons. To po…
Visualizing the microscopic origins of topology in twisted molybdenum ditelluride
Ellis Thompson, Keng Tou Chu, Florie Mesple +14
In moiré materials with flat electronic bands and suitable quantum geometry, strong correlations can give rise to novel topological states of matter. The nontrivial band topology o…
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…
Higher Landau-Level Analogs and Signatures of Non-Abelian States in Twisted Bilayer MoTe
Chong Wang, Xiao-Wei Zhang, Xiaoyu Liu +3
Recent experimental discovery of fractional Chern insulators at zero magnetic field in moiré superlattices has sparked intense interests in bringing Landau level physics to flat Ch…
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 antiferromagnetic Chern insulator in twisted bilayer transition metal dichalcogenides
Xiaoyu Liu, Chong Wang, Xiao-Wei Zhang +2
A series of recent experimental works on twisted MoTe homobilayers have unveiled an abundance of exotic states in this system. Valley-polarized quantum anomalous Hall states ha…
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…
Signatures of Fractional Quantum Anomalous Hall States in Twisted MoTe2 Bilayer
Jiaqi Cai, Eric Anderson, Chong Wang +13
The interplay between spontaneous symmetry breaking and topology can result in exotic quantum states of matter. A celebrated example is the quantum anomalous Hall (QAH) state, whic…
Fractional Chern Insulator in Twisted Bilayer MoTe
Chong Wang, Xiao-Wei Zhang, Xiaoyu Liu +5
A recent experiment has reported the first observation of a zero-field fractional Chern insulator (FCI) phase in twisted bilayer MoTe moiré superlattices [Nature 622, 63-68 (20…
Kekulé Moiré Superlattices
Yusen Ye, Jimin Qian, Xiao-Wei Zhang +3
Moiré superlattices from stacks of van der Waals materials offer an exciting arena in the fields of condensed matter physics and materials science. Typically, these moiré superlatt…
Tunable phononic coupling in excitonic quantum emitters
Adina Ripin, Ruoming Peng, Xiaowei Zhang +6
Engineering the coupling between fundamental quantum excitations is at the heart of quantum science and technologies. A significant case is the creation of quantum light sources in…