718 citations · 7.5k across the 93 of their papers we have counts for
20 papers · 1 filter
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…
Observation of Fractionally Quantized Anomalous Hall Effect
Heonjoon Park, Jiaqi Cai, Eric Anderson +17
The integer quantum anomalous Hall (QAH) effect is a lattice analog of the quantum Hall effect at zero magnetic field. This striking transport phenomenon occurs in electronic syste…
Fermi Surface Evolution and Anomalous Hall Effect in an Ideal Type-II Weyl Semimetal
Qianni Jiang, Johanna C. Palmstrom, John Singleton +11
Weyl semimetals (WSMs) are three-dimensional topological materials that exhibit fascinating properties due to the presence of Weyl nodes in their band structure. However, existing…
Superlattice Engineering of Topology in Massive Dirac Fermions
Nishchay Suri, Chong Wang, Benjamin M. Hunt +1
We show that a superlattice potential can be employed to engineer topology in massive Dirac fermions in systems such as bilayer graphene, moiré graphene-boron nitride, and transiti…
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…
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…
Gate-tunable proximity effects in graphene on layered magnetic insulators
Chun-Chih Tseng, Tiancheng Song, Qianni Jiang +11
The extreme versatility of two-dimensional van der Waals (vdW) materials derives from their ability to exhibit new electronic properties when assembled in proximity with dissimilar…
Light-Induced Ferromagnetism in Moiré Superlattices
Xi Wang, Chengxin Xiao, Heonjoon Park +9
Many-body interactions between carriers lie at the heart of correlated physics. The ability to tune such interactions would open the possibility to access and control complex elect…
Chiral Phonons in Moiré Superlattices
Nishchay Suri, Chong Wang, Yinhan Zhang +1
We discover chiral phonons at the lowest-energy bands in moiré superlattices. The moiré chiral phonons we uncover are the collective excitations of the stacking domains. Their orig…
Electric control of a canted-antiferromagnetic Chern insulator
Jiaqi Cai, Dmitry Ovchinnikov, Zaiyao Fei +11
The interplay between band topology and magnetism can give rise to exotic states of matter. For example, magnetically doped topological insulators can realize a Chern insulator tha…
Intrinsic nonlinear Hall effect in antiferromagnetic tetragonal CuMnAs
Chong Wang, Yang Gao, Di Xiao
Detecting the orientation of the Néel vector is a major research topic in antiferromagnetic spintronics. Here we recognize the intrinsic nonlinear Hall effect, which is independent…
Highly Anisotropic Excitons and Multiple Phonon Bound States in a Van der Waals Antiferromagnetic Insulator
Kyle Hwangbo, Qi Zhang, Qianni Jiang +9
Two-dimensional semiconducting systems, such as quantum wells and transition metal dichalcogenides, are the foundations to investigate low dimensional light-matter interactions. To…
Abrupt switching of the anomalous Hall effect by field-rotation in nonmagnetic ZrTe5
Joshua Mutch, Xuetao Ma, Chong Wang +7
The Hall effect arises when time reversal symmetry is broken by either intrinsic magnetism or an external magnetic field. The latter contribution dominates in non-magnetic material…
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…
Diabolical touching point in the magnetic energy levels of topological nodal-line metals
Chong Wang, Zhongyi Zhang, Chen Fang +1
For three-dimensional metals, Landau levels disperse as a function of the magnetic field and the momentum wavenumber parallel to the field. In this two-dimensional parameter space,…
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…
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…
Electric polarization as a nonquantized topological response and boundary Luttinger theorem
Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath +1
We develop a nonperturbative approach to the bulk polarization of crystalline electric insulators in dimensions. Formally, we define polarization via the response to backg…
Landau quantization of nearly degenerate bands, and full symmetry classification of avoided Landau-level crossings
Chong Wang, Wenhui Duan, Leonid Glazman +1
Semiclassical quantization rules compactly describe the energy dispersion of Landau levels, and are predictive of quantum oscillations in transport and thermodynamic quantities. Su…
Topo-fermiology
A. Alexandradinata, Chong Wang, Wenhui Duan +1
The modern semiclassical theory of a Bloch electron in a magnetic field now encompasses the orbital magnetic moment and the geometric phase. These two notions are encoded in the Bo…