2.6k citations · 11.7k across the 43 of their papers we have counts for
43 papers
Valleytronics in 2D Materials Roadmap
Kyle L. Seyler, Giancarlo Soavi, Bent Weber +30
Valleytronics exploits non-equivalent energy extrema in the electronic band structure of crystalline solids -- the valley degree of freedom -- to encode, manipulate, and read out i…
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…
A Quantized Interband Topological Index in Two-Dimensional Systems
Tharindu Fernando, Ting Cao
We introduce a novel gauge-invariant, quantized interband index in two-dimensional (2D) multiband systems. It provides a bulk topological classification of a submanifold of paramet…
Raman Study of Layered Breathing Kagome Lattice Semiconductor Nb3Cl8
Dylan A. Jeff, Favian Gonzalez, Kamal Harrison +11
Niobium chloride (Nb3Cl8) is a layered 2D semiconducting material with many exotic properties including a breathing kagome lattice, a topological flat band in its band structure, a…
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…
Strain-programmable van der Waals magnetic tunnel junctions
John Cenker, Dmitry Ovchinnikov, Harvey Yang +12
The magnetic tunnel junction (MTJ) is a backbone device for spintronics. Realizing next generation energy efficient MTJs will require operating mechanisms beyond the standard means…
Mixed-dimensional moiré systems of graphitic thin films with a twisted interface
Dacen Waters, Ellis Thompson, Esmeralda Arreguin-Martinez +7
Moiré patterns formed by stacking atomically-thin van der Waals crystals with a relative twist angle can give rise to dramatic new physical properties. The study of moiré materials…
Designing magnetic properties in CrSBr through hydrostatic pressure and ligand substitution
Evan J. Telford, Daniel G. Chica, Kaichen Xie +10
The ability to control magnetic properties of materials is crucial for fundamental research and underpins many information technologies. In this context, two-dimensional materials…
Tunable Exciton-Hybridized Magnon Interactions in a Layered Semiconductor
Geoffrey M. Diederich, John Cenker, Yafei Ren +8
The interaction between distinct excitations in solids is of both fundamental interest and technological importance. One example of such interactions is coupling between an exciton…
Intercell Moiré Exciton Complexes in Electron Lattices
Xi Wang, Xiaowei Zhang, Jiayi Zhu +12
Excitons, Coulomb-bound electron-hole pairs, play a fundamental role in both optical excitation and correlated phenomena in solids. When an exciton interacts with other quasi-parti…
Ab initio calculations of spin-nonconserving exciton-phonon scattering in monolayer transition metal dichalcogenides
Xiaowei Zhang, Ting Cao
We investigate the spin-nonconserving relaxation channel of excitons by their couplings with phonons in two-dimensional transition metal dichalcogenides using …
Phonon-mediated exciton relaxation in two-dimensional semiconductors: selection rules and relaxation pathways
Xiao-Wei Zhang, Kaichen Xie, En-Ge Wang +2
Exciton-phonon coupling (ExPC) is crucial for energy relaxation in semiconductors, yet the first-principles calculation of such coupling remains challenging, especially for low-dim…
Long-range transport of 2D excitons with acoustic waves
Ruoming Peng, Adina Ripin, Yusen Ye +9
Excitons are elementary optical excitation in semiconductors. The ability to manipulate and transport these quasiparticles would enable excitonic circuits and devices for quantum p…
Interlayer Electronic Coupling on Demand in a 2D Magnetic Semiconductor
Nathan P. Wilson, Kihong Lee, John Cenker +10
When monolayers of two-dimensional (2D) materials are stacked into van der Waals structures, interlayer electronic coupling can introduce entirely new properties, as exemplified by…
Spin Photovoltaic Effect in Magnetic van der Waals Heterostructures
Tiancheng Song, Eric Anderson, Matisse Wei-Yuan Tu +9
The development of van der Waals (vdW) crystals and their heterostructures has created a fascinating platform for exploring optoelectronic properties in the two-dimensional (2D) li…
Imaging graphene moiré superlattices via scanning Kelvin probe microscopy
Junxi Yu, Rajiv Giridharagopal, Yuhao Li +5
Moiré superlattices in van der Waals heterostructures are gaining increasing attention because they offer new opportunities to tailor and explore unique electronic phenomena when s…
Electric Field Tunable Topological Phases in Graphene Nanoribbons
Fangzhou Zhao, Ting Cao, Steven G. Louie
Graphene nanoribbons (GNRs) possess distinct symmetry-protected topological phases. We show, through first-principles calculations, that by applying an experimentally accessible tr…
Designing Artificial Two-Dimensional Landscapes via Room-Temperature Atomic-Layer Substitution
Yunfan Guo, Yuxuan Lin, Kaichen Xie +21
Manipulating materials with atomic-scale precision is essential for the development of next-generation material design toolbox. Tremendous efforts have been made to advance the com…
Momentum-Dark Intervalley Exciton in Monolayer Tungsten Diselenide Brightened via Chiral Phonon
Zhipeng Li, Tianmeng Wang, Chenhao Jin +13
Inversion symmetry breaking and three-fold rotation symmetry grant the valley degree of freedom to the robust exciton in monolayer transition metal dichalcogenides (TMDCs), which c…
Inducing Metallicity in Graphene Nanoribbons via Zero-Mode Superlattices
Daniel J. Rizzo, Gregory Veber, Jingwei Jiang +7
The design and fabrication of robust metallic states in graphene nanoribbons (GNRs) is a significant challenge since lateral quantum confinement and many-electron interactions tend…