723 citations · 3.5k across the 23 of their papers we have counts for
23 papers
Extended strange metal and superconductivity in partially filled moiré Hubbard bands
Yiyu Xia, Yichi Zhang, Zhongdong Han +7
Moiré semiconductors provide a physical realization of the Hubbard model. Bandwidth-tuned Mott transitions and complex phase diagrams mimicking those of high-temperature supercondu…
Competing Chern states revealed by quasiparticle charging in moiré rhombohedral graphene
Hongyuan Li, Zuhan Geng, Junseok Seo +13
Moiré materials realize a versatile platform for exploring the physics of fractional Chern insulators (FCIs). The recently observed evolution from FCIs to an extended quantum anoma…
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…
Magnetic-field-induced superconductivity in hexalayer rhombohedral graphene
Jinghao Deng, Jiabin Xie, Hongyuan Li +5
In conventional superconductors, superconductivity is generally suppressed by external magnetic fields due to spin-singlet pairing. Here, we report signatures of in-plane-magnetic-…
Superconductivity and Ferroelectric Orbital Magnetism in Semimetallic Rhombohedral Hexalayer Graphene
Jinghao Deng, Jiabin Xie, Hongyuan Li +5
Rhombohedral multilayer graphene has emerged as a promising platform for exploring correlated and topological quantum phases, enabled by its Berry-curvature-bearing flat bands. Whi…
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,…
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…
Wigner Molecular Crystals from Multi-electron Moiré Artificial Atoms
Hongyuan Li, Ziyu Xiang, Aidan P. Reddy +10
Semiconductor moiré superlattices provide a versatile platform to engineer new quantum solids composed of artificial atoms on moiré sites. Previous studies have mostly focused on t…
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…
Magnetic field stabilized Wigner crystal states in a graphene moiré superlattice
Guorui Chen, Ya-Hui Zhang, Aaron Sharpe +11
Wigner crystals are predicted as the crystallization of the dilute electron gas moving in a uniform background when the electron-electron Coulomb energy dominates the kinetic energ…
Mapping Charge Excitations in Generalized Wigner Crystals
Hongyuan Li, Ziyu Xiang, Emma Regan +9
Transition metal dichalcogenide-based moire superlattices exhibit very strong electron-electron correlations, thus giving rise to strongly correlated quantum phenomena such as gene…
Spectroscopy Signatures of Electron Correlations in a Trilayer Graphene/hBN Moiré Superlattice
Jixiang Yang, Guorui Chen, Tianyi Han +12
ABC-stacked trilayer graphene/hBN moiré superlattice (TLG/hBN) has emerged as a playground for correlated electron physics. We report spectroscopy measurements of dual-gated TLG/hB…
Imaging Generalized Wigner Crystal States in a WSe2/WS2 Moiré Superlattice
Hongyuan Li, Shaowei Li, Emma C. Regan +11
The Wigner crystal state, first predicted by Eugene Wigner in 1934, has fascinated condensed matter physicists for nearly 90 years2-14. Studies of two-dimensional (2D) electron gas…
Efficient Fizeau Drag from Dirac electrons in monolayer graphene
Wenyu Zhao, Sihan Zhao, Hongyuan Li +11
Fizeau demonstrated in 1850 that the speed of light can be modified when it is propagating in moving media. Can we achieve such control of the light speed efficiently with a fast-m…
Imaging local discharge cascades for correlated electrons in WS2/WSe2 moiré superlattices
Hongyuan Li, Shaowei Li, Mit H. Naik +14
Transition metal dichalcogenide (TMD) moiré heterostructures provide an ideal platform to explore the extended Hubbard model1 where long-range Coulomb interactions play a critical…
Tunable ferromagnetism at non-integer filling of a moiré superlattice
Guorui Chen, Aaron L. Sharpe, Eli J. Fox +12
The flat bands resulting from moiré superlattices in magic-angle twisted bilayer graphene (MATBG) and ABC-trilayer graphene aligned with hexagonal boron nitride (ABC-TLG/hBN) have…
Visualizing delocalized correlated electronic states in twisted double bilayer graphene
Canxun Zhang, Tiancong Zhu, Salman Kahn +12
The discovery of interaction-driven insulating and superconducting phases in moiré van der Waals heterostructures has sparked considerable interest in understanding the novel corre…
Imaging moiré flat bands in 3D reconstructed WSe2/WS2 superlattices
Hongyuan Li, Shaowei Li, Mit H. Naik +17
Moiré superlattices in transition metal dichalcogenide (TMD) heterostructures can host novel correlated quantum phenomena due to the interplay of narrow moiré flat bands and strong…
Visualization of the flat electronic band in twisted bilayer graphene near the magic angle twist
M. Iqbal Bakti Utama, Roland J. Koch, Kyunghoon Lee +15
Bilayer graphene was theorized to host a moire miniband with flat dispersion if the layers are stacked at specific twist angles known as the magic angles. Recently, such twisted bi…
Nanostructural insights into the dissolution behavior of Sr doped hydroxyapatite
Hui Zhu, Dagang Guo, Lijuan Sun +4
In this study, high resolution transmission electron microscopy, HRTEM, was employed to characterize the nanostructure of strontium substituted hydroxyapatite, Sr HA, and its evolu…
Tunable Correlated Chern Insulator and Ferromagnetism in Trilayer Graphene/Boron Nitride Moiré Superlattice
Guorui Chen, Aaron L. Sharpe, Eli J. Fox +12
Studies on two-dimensional electron systems in a strong magnetic field first revealed the quantum Hall (QH) effect, a topological state of matter featuring a finite Chern number (C…
Signatures of Gate-Tunable Superconductivity in Trilayer Graphene/Boron Nitride Moiré Superlattice
Guorui Chen, Aaron L. Sharpe, Patrick Gallagher +12
Understanding the mechanism of high temperature (high Tc) superconductivity is a central problem in condensed matter physics. It is often speculated that high Tc superconductivity…
Evidence of Gate-Tunable Mott Insulator in Trilayer Graphene-Boron Nitride Moiré Superlattice
Guorui Chen, Lili Jiang, Shuang Wu +9
Mott insulator plays a central role in strongly correlated physics, where the repulsive Coulomb interaction dominates over the electron kinetic energy and leads to insulating state…