845 citations · 3.6k across the 25 of their papers we have counts for
25 papers
Graphene-driven correlated electronic states in one dimensional defects within WS
Antonio Rossi, John C. Thomas, Johannes T. Küchle +19
Tomonaga-Luttinger liquid (TLL) behavior in one-dimensional systems has been predicted and shown to occur at semiconductor-to-metal transitions within two-dimensional materials. Re…
Imaging gate-induced molecular melting on a graphene field-effect transistor
Franklin Liou, Hsin-Zon Tsai, Zachary A. H. Goodwin +9
Solid-liquid phase transitions are fundamental physical processes, but atomically-resolved microscopy has yet to capture both the solid and liquid dynamics for such a transition. W…
Imaging Quantum Interference in Stadium-Shaped Monolayer and Bilayer Graphene Quantum Dots
Zhehao Ge, Dillon Wong, Juwon Lee +10
Experimental realization of graphene-based stadium-shaped quantum dots (QDs) have been few and incompatible with scanned probe microscopy. Yet, direct visualization of electronic s…
Gate-tunable artificial nucleus in graphene
Mykola Telychko, Keian Noori, Hillol Biswas +12
We report an atomically-precise integration of individual nitrogen (N) dopant as an in-plane artificial nucleus in a graphene device by atomic implantation to probe its gate-tunabl…
Imaging reconfigurable molecular concentration on a graphene field-effect transistor
Franklin Liou, Hsin-Zon Tsai, Andrew S. Aikawa +9
The spatial arrangement of adsorbates deposited onto a clean surface in vacuum typically cannot be reversibly tuned. Here we use scanning tunneling microscopy to demonstrate that m…
Imaging gate-tunable Tomonaga-Luttinger liquids in 1H-MoSe mirror twin boundaries
Tiancong Zhu, Wei Ruan, Yan-Qi Wang +15
One-dimensional electron systems (1DESs) exhibit properties that are fundamentally different from higher-dimensional systems. For example, electron-electron interactions in 1DESs h…
Non-Covalent Dimerization after Enediyne Cyclization on Au(111)
Dimas G. de Oteyza, Alejandro Pérez Paz, Yen-Chia Chen +7
We investigate the thermally-induced cyclization of 1,2 - bis(2 - phenylethynyl)benzene on Au(111) using scanning tunneling microscopy and computer simulations. Cyclization of ster…
Imaging spinon density modulations in a 2D quantum spin liquid
Wei Ruan, Yi Chen, Shujie Tang +17
Two-dimensional triangular-lattice antiferromagnets are predicted under some conditions to exhibit a quantum spin liquid ground state whose low-energy behavior is described by a sp…
Imaging electric field dynamics with graphene optoelectronics
Jason Horng, Halleh B. Balch, Allister F. McGuire +5
The use of electric fields for signalling and control in liquids is widespread, spanning bioelectric activity in cells to electrical manipulation of microstructures in lab-on-a-chi…
Visualizing Exotic Orbital Texture in the Single-Layer Mott Insulator 1T-TaSe2
Yi Chen, Wei Ruan, Meng Wu +18
Mott insulating behavior is induced by strong electron correlation and can lead to exotic states of matter such as unconventional superconductivity and quantum spin liquids. Recent…
Catalyst-Free And Morphology-Controlled Growth Of 2D Perovskite Nanowires for Polarized Light Detection
Debjit Ghoshal, Tianmeng Wang, Hsin-Zon Tsai +2
Two-dimensional (2D) perovskites or Ruddleson Popper (RP) perovskites have emerged as a class of material inheriting the superior optoelectronic properties of two different materia…
Electrons imitating light: Frustrated supercritical collapse in charged arrays on graphene
Jiong Lu, Hsin-Zon Tsai, Alpin N. Tatan +10
The photon-like electronic dispersion of graphene bestows its charge carriers with unusual confinement properties that depend strongly on the geometry and strength of the surroundi…
Microscopy of hydrogen and hydrogen-vacancy defect structures on graphene devices
Dillon Wong, Yang Wang, Wuwei Jin +8
We have used scanning tunneling microscopy (STM) to investigate two types of hydrogen defect structures on monolayer graphene supported by hexagonal boron nitride (h-BN) in a gated…
Visualization and Control of Single Electron Charging in Bilayer Graphene Quantum Dots
Jairo Velasco, Juwon Lee, Dillon Wong +9
Graphene p-n junctions provide an ideal platform for investigating novel behavior at the boundary between electronics and optics that arise from massless Dirac fermions, such as wh…
Spatially resolving density-dependent screening around a single charged atom in graphene
Dillon Wong, Fabiano Corsetti, Yang Wang +8
Electrons in two-dimensional graphene sheets behave as interacting chiral Dirac fermions and have unique screening properties due to their symmetry and reduced dimensionality. By u…
Realization of Quantum Spin Hall State in Monolayer 1T'-WTe2
Shujie Tang, Chaofan Zhang, Dillon Wong +23
A quantum spin Hall (QSH) insulator is a novel two-dimensional quantum state of matter that features quantized Hall conductance in the absence of magnetic field, resulting from top…
Imaging electrostatically confined Dirac fermions in graphene quantum dots
Juwon Lee, Dillon Wong, Jairo Velasco +9
Electrostatic confinement of charge carriers in graphene is governed by Klein tunneling, a relativistic quantum process in which particle-hole transmutation leads to unusual anisot…
Nanoscale control of rewriteable doping patterns in pristine graphene/boron nitride heterostructures
Jairo Velasco, Long Ju, Dillon Wong +11
Nanoscale control of charge doping in two-dimensional (2D) materials permits the realization of electronic analogs of optical phenomena, relativistic physics at low energies, and t…
Observing Atomic Collapse Resonances in Artificial Nuclei on Graphene
Yang Wang, Dillon Wong, Andrey V. Shytov +10
Relativistic quantum mechanics predicts that when the charge of a superheavy atomic nucleus surpasses a certain threshold, the resulting strong Coulomb field causes an unusual atom…
Local spectroscopy of moiré-induced electronic structure in gate-tunable twisted bilayer graphene
Dillon Wong, Yang Wang, Jeil Jung +16
Twisted bilayer graphene (tBLG) forms a quasicrystal whose structural and electronic properties depend on the angle of rotation between its layers. Here we present a scanning tunne…
Characterization of collective ground states in single-layer NbSe2
Miguel M. Ugeda, Aaron J. Bradley, Yi Zhang +14
Layered transition metal dichalcogenides (TMDs) are ideal systems for exploring the effects of dimensionality on correlated electronic phases such as charge density wave (CDW) orde…
Optimizing Broadband Terahertz Modulation with Hybrid Graphene/Metasurface Structures
S. -F. Shi, B. Zeng, H. -L. Han +6
We demonstrate efficient terahertz (THz) modulation by coupling graphene strongly with a broadband THz metasurface device. This THz metasurface, made of periodic gold slit arrays,…
Characterization and manipulation of individual defects in insulating hexagonal boron nitride using scanning tunneling microscopy
Dillon Wong, Jairo Velasco, Long Ju +9
Defects play a key role in determining the properties of most materials and, because they tend to be highly localized, characterizing them at the single-defect level is particularl…
Photo-induced Doping in Graphene/Boron Nitride Heterostructures
L. Ju, J. Velasco, E. Huang +11
The design of stacks of layered materials in which adjacent layers interact by van der Waals forces[1] has enabled the combination of various two-dimensional crystals with differen…