553 citations · 1.9k across the 14 of their papers we have counts for
14 papers
Moiré band model and band gaps of graphene on hexagonal boron nitride
Jeil Jung, Evan Laksono, Ashley M. DaSilva +3
Nearly aligned graphene on hexagonal boron nitride (G/BN) can be accurately modeled by a Dirac Hamiltonian perturbed by smoothly varying moiré pattern pseudospin fields. Here, we p…
Tunable Moiré Bands and Strong Correlations in Small-Twist-Angle Bilayer Graphene
Kyounghwan Kim, Ashley DaSilva, Shengqiang Huang +7
According to electronic structure theory, bilayer graphene is expected to have anomalous electronic properties when it has long-period moiré patterns produced by small misalignment…
Fractional Hofstadter States in Graphene on Hexagonal Boron Nitride
Ashley M. DaSilva, Jeil Jung, Allan H. MacDonald
In fractionally filled Landau levels there is only a small energy difference between broken translational symmetry electron-crystal states and exotic correlated quantum fluid state…
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…
THz conductivity of graphene on boron nitride
Ashley M. DaSilva, Jeil Jung, Shaffique Adam +1
The conductivity of graphene on a boron nitride substrate exhibits features in the terahertz (THz) and infrared (IR) frequency regimes that are associated with the periodic moiré p…
Transport and particle-hole asymmetry in graphene on boron nitride
Ashley M. DaSilva, Jeil Jung, Shaffique Adam +1
All local electronic properties of graphene on a hexagonal boron nitride (hBN) substrate exhibit spatial moiré patterns related to lattice constant and orientation differences betw…
Origin of band gaps in graphene on hexagonal boron nitride
Jeil Jung, Ashley DaSilva, Allan H. MacDonald +1
Recent progress in preparing well controlled 2D van der Waals heterojunctions has opened up a new frontier in materials physics. In this paper we address the intriguing energy gaps…
Demonstration of surface transport in a hybrid Bi2Se3/Bi2Te3 heterostructure
Yanfei Zhao, Cui-Zu Chang, Ying Jiang +9
In spite of much work on topological insulators (TIs), systematic experiments for TI/TI heterostructures remain absent. We grow a high quality heterostructure containing single qui…
Photonic density of states enhancement in finite graphene multilayers
Ashley M DaSilva, You-Chia Chang, Ted Norris +1
We consider the optical properties of finite systems composed of a series of graphene sheets separated by thin dielectric layers. Because these systems respond as conductors to ele…
Integrating Functional Oxides with Graphene
X. Hong, K. Zou, A. M. DaSilva +2
Graphene-oxide hybrid structures offer the opportunity to combine the versatile functionalities of oxides with the excellent electronic transport in graphene. Understanding and con…
The stability of the fractional quantum Hall effect in topological insulators
Ashley M. DaSilva
With the recent observation of graphene-like Landau levels at the surface of topological insulators, the possibility of fractional quantum Hall effect, which is a fundamental signa…
Observation of the superconducting proximity effect and possible evidence for Pearl vortices in a candidate topological insulator
Duming Zhang, Jian Wang, Ashley M. DaSilva +5
We report the observation of the superconducting proximity effect in nanoribbons of a candidate topological insulator (Bi2Se3) which is interfaced with superconducting (tungsten) c…
Evidence for electron-electron interaction in topological insulator thin films
Jian Wang, Ashley M. DaSilva, Cui-Zu Chang +6
We consider in our work high quality single crystal thin films of Bi2Se3, grown by molecular beam epitaxy, both with and without Pb doping. Our ARPES data demonstrate topological s…
Mechanism for current saturation and energy dissipation in graphene transistors
Ashley M. DaSilva, Ke Zou, J. K. Jain +1
From a combination of careful and detailed theoretical and experimental studies, we demonstrate that the Boltzmann theory including all scattering mechanisms gives an excellent acc…