590 citations · 1.5k across the 18 of their papers we have counts for
21 papers
Imaging Gate-Tunable Single-Layer Molecular Kagome Lattices
Ziyi Wang, Rafal Zuzak, Weichen Tang +11
Kagome lattices provide a simple geometry for engineering electronic states that exhibit novel quantum behavior. In conventional kagome materials, however, the relevant states are…
Synthesis of Metal-Semiconductor Heterojunctions in Single Graphene Nanoribbons
Ziyi Wang, Kaitlin Slicker, Weichen Tang +9
Graphene nanoribbons (GNRs) are a highly tunable class of one-dimensional (1D) quantum materials that can be fabricated through bottom-up synthesis. Precise control over GNR band g…
Deep Learning GW Quasiparticle Hamiltonians for Many-Body Excited-State Electronic Structure at Scale
Xiaoxun Gong, Zechen Tang, Woochang Kim +4
Accurate quasiparticle electronic structures are the foundation for understanding excited-state properties of materials and explaining optoelectronic, quantum, and transport phenom…
Imaging Interacting Two-Dimensional Anisotropic Electrons
Ziyu Xiang, Jianghan Xiao, Hongyuan Li +9
We directly visualize a two-dimensional anisotropic Wigner crystal and its quantum melting in monolayer 1T-ReSe2 using non-invasive scanning tunnelling microscopy. In crystals with…
Ab initio quantum embedding description of magic angle twisted bilayer graphene at even-integer fillings
Raehyun Kim, Woochang Kim, Kevin D. Stubbs +2
Magic angle twisted bilayer graphene (MATBG) hosts narrow moiré bands with meV-scale energy splittings, making its correlated phases sensitive to both material parameters and model…
Ferromagnetic Insulator to Metal Transition in Non-Centrosymmetric Graphene Nanoribbons
Aidan P. Delgado, Michael C. Daugherty, Weichen Tang +2
Engineering sublattice imbalance within the unit cell of bottom-up synthesized graphene nanoribbons (GNRs) represents a versatile tool for realizing custom-tailored quantum nanomat…
Engineering phase-frustration induced flat bands in an aza-triangulene covalent Kagome lattice
Yuyi Yan, Fujia Liu, Weichen Tang +4
Pi-conjugated covalent organic frameworks (COFs) provide a versatile platform for the realization of designer quantum nanomaterials. Strong electron-electron correlation within the…
Jahn-Teller-like Distortion in a One-dimensional π-Conjugated Polymer
Ziyi Wang, Boyu Qie, Weichen Tang +8
Structurally distorting low-dimensional π-conjugated systems can profoundly influence their electronic properties, but controlling such behavior in extended-width systems remains c…
Janus graphene nanoribbons with a single ferromagnetic zigzag edge
Shaotang Song, Yu Teng, Weichen Tang +9
Topological design of pi-electrons in zigzag-edged graphene nanoribbons (ZGNRs) leads to a wealth of magnetic quantum phenomena and exotic quantum phases. Symmetric ZGNRs typically…
Imaging Tunable Luttinger Liquid Systems in van der Waals Heterostructures
Hongyuan Li, Ziyu Xiang, Tianle Wang +16
One-dimensional (1D) interacting electrons are often described as a Luttinger liquid1-4 having properties that are intrinsically different from Fermi liquids in higher dimensions5,…
Regioselective On-Surface Synthesis of [3]Triangulene Graphene Nanoribbons
Michael C. Daugherty, Peter H. Jacobse, Jingwei Jiang +9
The integration of low-energy states into bottom-up engineered graphene nanoribbons (GNRs) is a robust strategy for realizing materials with tailored electronic band structure for…
Quantum Melting of a Disordered Wigner Solid
Ziyu Xiang, Hongyuan Li, Jianghan Xiao +15
The behavior of two-dimensional electron gas (2DEG) in extreme coupling limits are reasonably well-understood, but our understanding of intermediate region remains limited. Strongl…
Topology, magnetism and charge order in twisted MoTe2 at higher integer hole fillings
Taige Wang, Minxuan Wang, Woochang Kim +3
Twisted homobilayer transition metal dichalcogenide (TMD) attracts an expanding experimental interest recently for exhibiting a variety of topological and magnetic states even at z…
Terahertz phonon engineering with van der Waals heterostructures
Yoseob Yoon, Zheyu Lu, Can Uzundal +11
Phononic engineering at gigahertz (GHz) frequencies form the foundation of microwave acoustic filters, acousto-optic modulators, and quantum transducers. Terahertz (THz) phononic e…
Imaging Moiré Excited States with Photocurrent Tunneling Microscopy
Hongyuan Li, Ziyu Xiang, Mit H. Naik +12
Moiré superlattices provide a highly tunable and versatile platform to explore novel quantum phases and exotic excited states ranging from correlated insulators1-17 to moiré excito…
Identifying substitutional oxygen as a prolific point defect in monolayer transition metal dichalcogenides with experiment and theory
Sara Barja, Sivan Refaely-Abramson, Bruno Schuler +17
Chalcogen vacancies are considered to be the most abundant point defects in two-dimensional (2D) transition-metal dichalcogenide (TMD) semiconductors, and predicted to result in de…
Effective Mass in Bilayer Graphene at Low Carrier Densities: the Role of Potential Disorder and Electron-Electron Interaction
J. Li, L. Z. Tan, K. Zou +6
In a two-dimensional electron gas, the electron-electron interaction generally becomes stronger at lower carrier densities and renormalizes the Fermi liquid parameters such as the…
Controlled Growth of a Line Defect in Graphene and Implications for Gate-Tunable Valley Filtering
J. -H. Chen, G. Autès, N. Alem +7
Atomically precise tailoring of graphene can enable unusual transport pathways and new nanometer-scale functional devices. Here we describe a recipe for the controlled production o…
Experimentally Engineering the Edge Termination of Graphene Nanoribbons
Xiaowei Zhang, Oleg V. Yazyev, Juanjuan Feng +9
The edges of graphene nanoribbons (GNRs) have attracted much interest due to their potentially strong influence on GNR electronic and magnetic properties. Here we report the abilit…
Raman spectroscopy study of rotated double-layer graphene: Misorientation-angle dependence of electronic structure
Kwanpyo Kim, Sinisa Coh, Liang Z. Tan +7
We present a systematic Raman study of unconventionally-stacked double-layer graphene, and find that the spectrum strongly depends on the relative rotation angle between layers. Ro…
A Tunable Phonon-Exciton Fano System in Bilayer Graphene
Tsung-Ta Tang, Yuanbo Zhang, Cheol-Hwan Park +9
Interference between different possible paths lies at the heart of quantum physics. Such interference between coupled discrete and continuum states of a system can profoundly chang…