1.4k citations · 8k across the 68 of their papers we have counts for
67 papers
Topological flat bands, valley polarization, and interband superconductivity in magic-angle twisted bilayer graphene with proximitized spin-orbit couplings
Yang-Zhi Chou, Yuting Tan, Fengcheng Wu +1
We study theoretically the magic-angle twisted bilayer graphene with proximity-induced Ising and Rashba spin-orbit couplings on the top layer. Topological flat bands (with three di…
Majorana zero modes in twisted transition metal dichalcogenides homobilayers
Xun-Jiang Luo, Wen-Xuan Qiu, Fengcheng Wu
Semiconductor moiré superlattices provide a highly tunable platform to study the interplay between electron correlation and band topology. For example, the generalized Kane-Mele-Hu…
Ferromagnetism and correlated insulating states in monolayer Mo33Te56
Zemin Pan, Wenqi Xiong, Jiaqi Dai +17
Kagome lattices have an inherent two-dimensional nature. Despite previous realizations in the monolayer limit, their abilities to drive emergent electronic states such as correlate…
Interaction-driven topological phase diagram of twisted bilayer MoTe
Wen-Xuan Qiu, Bohao Li, Xun-Jiang Luo +1
Twisted bilayer MoTe is a promising platform to investigate the interplay between band topology and many-body interaction. We present a theoretical study of its interaction-dri…
Observation of Rydberg moiré excitons
Qianying Hu, Zhen Zhan, Huiying Cui +13
Rydberg excitons, the solid-state counterparts of Rydberg atoms, have sparked considerable interest in harnessing their quantum application potentials, whereas a major challenge is…
Acoustic phonon contribution to the resistivity of twisted bilayer graphene
Seth M. Davis, Sage B. Brooks, Fengcheng Wu +1
We calculate the contribution to the doping () and temperature () dependence of the electrical resistivity of twisted bilayer graphene (TBLG) due to scattering by acoustic ph…
Thickness and twist angle dependent interlayer excitons in metal monochalcogenide heterostructures
Wenkai Zheng, Li Xiang, Felipe de Quesada +18
Interlayer excitons, or bound electron-hole pairs whose constituent quasiparticles are located in distinct stacked semiconducting layers, are being intensively studied in heterobil…
Symmetric Wannier states and tight-binding model for quantum spin Hall bands in AB-stacked MoTe/WSe
Xun-Jiang Luo, Minxuan Wang, Fengcheng Wu
Motivated by the observation of topological states in AB-stacked MoTe/WSe, we construct the symmetry-adapted Wannier states and tight-binding model for the quantum spin Hal…
Pair density wave and loop current promoted by van Hove singularities in moiré systems
Zhengzhi Wu, Yi-ming Wu, Fengcheng Wu
We theoretically show that in the presence of conventional or higher order van Hove singularities(VHS), the bare finite momentum pairing, also known as the pair density wave (PDW),…
Nematic excitonic insulator in transition metal dichalcogenide moiré heterobilayers
Ming Xie, Haining Pan, Fengcheng Wu +1
We study the effect of inter-electron Coulomb interactions on the displacement field induced topological phase transition in transition metal dichalcogenide (TMD) moiré heterobilay…
Enhanced superconductivity through virtual tunneling in Bernal bilayer graphene coupled to WSe
Yang-Zhi Chou, Fengcheng Wu, Sankar Das Sarma
Motivated by a recent experiment [arXiv:2205.05087], we investigate a possible mechanism that enhances superconductivity in hole-doped Bernal bilayer graphene due to a proximate WS…
Phonon-limited resistivity of multilayer graphene systems
Seth M. Davis, Sage B. Brooks, Yang-Zhi Chou +2
We calculate the theoretical contribution to the doping and temperature () dependence of electrical resistivity due to scattering by acoustic phonons in Bernal bilayer graphene…
Symmetry breaking and anomalous conductivity in a double moiré superlattice
Yuhao Li, Minmin Xue, Hua Fan +13
A double moiré superlattice can be realized by stacking three layers of atomically thin two-dimensional materials with designer interlayer twisting or lattice mismatches. In this n…
Acoustic-phonon-mediated superconductivity in moiréless graphene multilayers
Yang-Zhi Chou, Fengcheng Wu, Jay D. Sau +1
We investigate the competition between acoustic-phonon-mediated superconductivity and the long-range Coulomb interaction in moiréless graphene multilayers, specifically, Bernal bil…
Tailoring Dirac fermions by in-situ tunable high-order moire pattern in graphene-monolayer xenon heterostructure
Chunlong Wu, Qiang Wan, Cao Peng +8
A variety of novel quantum phases have been achieved in twist bilayer graphene (tBLG) and other moire superlattices recently, including correlated insulators, superconductivity, ma…
Pomeranchuk Effect and Tunable Quantum Phase Transitions in 3L-MoTe2/WSe2
Mingjie Zhang, Xuan Zhao, Kenji Watanabe +5
Many sought-after exotic states of matter are known to emerge close to quantum phase transitions, such as quantum spin liquids (QSL) and unconventional superconductivity. It is thu…
Strange metallicity of moiré twisted bilayer graphene
Sankar Das Sarma, Fengcheng Wu
Recent measurements in several different laboratories report the observation of an approximately linear-in-temperature resistivity with a large twist-angle-dependent slope (or temp…
Prediction of ferroelectric superconductors with reversible superconducting diode effect
Baoxing Zhai, Bohao Li, Yao Wen +2
A noncentrosymmetric superconductor can have a superconducting diode effect, where the critical current in opposite directions is different when time-reversal symmetry is also brok…
Observation of Moiré Flat Bands in Sonic Crystals
Tingzhi Liu, Xingjian Zhang, Qicheng Zhang +3
Recently, artificial moire superlattices of classical waves have aroused tremendous interest, inspired by the newly emergent twistronics that focuses on the peculiar electronic pro…
Topological Phases in AB-Stacked MoTe/WSe: Topological Insulators, Chern Insulators, and Topological Charge Density Waves
Haining Pan, Ming Xie, Fengcheng Wu +1
We present a theory on the quantum phase diagram of AB-stacked MoTe/WSe using a self-consistent Hartree-Fock calculation performed in the plane-wave basis, motivated by the…
Van der Waals Heterostructure Polaritons with moiré-Induced Nonlinearity
Long Zhang, Fengcheng Wu, Shaocong Hou +6
Controlling matter-light interactions with cavities is of fundamental importance in modern science and technology. It is exemplified in the strong-coupling regime, where matter-lig…
Acoustic-phonon-mediated superconductivity in Bernal bilayer graphene
Yang-Zhi Chou, Fengcheng Wu, Jay D. Sau +1
We present a systematic theory of acoustic-phonon-mediated superconductivity, which incorporates Coulomb repulsion, explaining the recent experiment in Bernal bilayer graphene unde…
Acoustic-phonon-mediated superconductivity in rhombohedral trilayer graphene
Yang-Zhi Chou, Fengcheng Wu, Jay D. Sau +1
Motivated by the observation of two distinct superconducting phases in the moiréless ABC-stacked rhombohedral trilayer graphene, we investigate the electron-acoustic-phonon couplin…
Spin-valley locked instabilities in moire transition metal dichalcogenides with conventional and higher-order Van Hove singularities
Yi-Ting Hsu, Fengcheng Wu, S. Das Sarma
Recent experiments have observed correlated insulating and possible superconducting phases in twisted homobilayer transition metal dichalcogenides (TMDs). Besides the spin-valley l…