4.8k citations · 54.9k across the 353 of their papers we have counts for
15 papers · 1 filter
Linear magnetoresistance induced by intra-scattering semiclassics of Bloch electrons
Cong Xiao, Hua Chen, Yang Gao +3
The weak field magnetoresistance has seen a revived interest due to the distinct role played by the momentum-space Berry curvature of Bloch electrons. While most previous studies i…
Quasiparticle Mass Enhancement and Fermi Surface Shape Modification in Oxide Two-Dimensional Electron Gases
John R. Tolsma, Alessandro Principi, Reza Asgari +2
We propose a model intended to qualitatively capture the electron-electron interaction physics of two-dimensional electron gases formed near transition-metal oxide heterojunctions…
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…
Direct Measurement of Exciton Valley Coherence in Monolayer WSe
Kai Hao, Galan Moody, Fengcheng Wu +7
In crystals, energy band extrema in momentum space can be identified by their valley index. The internal quantum degree of freedom associated with valley pseudospin indices can act…
Quantum transport simulation of exciton condensate transport physics in a double layer graphene system
Xuehao Mou, Leonard F. Register, Allan H. MacDonald +1
Spatially indirect electron-hole exciton condensates stabilized by interlayer Fock exchange interactions have been predicted in systems containing a pair of two-dimensional semicon…
Interaction Correction to the Magneto-Electric Polarizability of Topological Insulators
Karin Everschor-Sitte, Matthias Sitte, Allan H. MacDonald
When time-reversal symmetry is weakly broken and interactions are neglected, the surface of a topological insulator supports a half-quantized Hall conductivity $σ_{S} = e^{…
Strong interface-induced spin-orbit coupling in graphene on WS2
Zhe Wang, Dong-Keun Ki, Hua Chen +3
Interfacial interactions allow the electronic properties of graphene to be modified, as recently demonstrated by the appearance of satellite Dirac cones in the band structure of gr…
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…
Electronic Cooling via Interlayer Coulomb Coupling in Multilayer Epitaxial Graphene
Momchil T. Mihnev, John R. Tolsma, Charles J. Divin +7
In van der Waals bonded or rotationally disordered multilayer stacks of two-dimensional (2D) materials, the electronic states remain tightly confined within individual 2D layers. A…
SU(3) and SU(4) singlet quantum Hall states at
Fengcheng Wu, Inti Sodemann, Allan H. MacDonald +1
We report on an exact diagonalization study of fractional quantum Hall states at filling factor in a system with a four-fold degenerate =0 Landau level and SU(4) symmetr…
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…
Exciton band structure of monolayer MoS2
Fengcheng Wu, Fanyao Qu, A. H. MacDonald
We address the properties of excitons in monolayer MoS from a theoretical point of view, showing that low-energy excitonic states occur both at the Brillouin zone center and at…
Quantum Anomalous Hall Effect in Graphene Proximity Coupled to an Antiferromagnetic Insulator
Zhenhua Qiao, Wei Ren, Hua Chen +4
We propose realizing the quantum anomalous Hall effect by proximity coupling graphene to an antiferromagnetic insulator that provides both broken time-reversal symmetry and spin-or…
First-principles theory of electron-spin fluctuation coupling and superconducting instabilities in iron selenide
Johannes Lischner, Timur Bazhirov, Allan H. MacDonald +2
We present first-principles calculations of the coupling of quasiparticles to spin fluctuations in iron selenide and discuss which types of superconducting instabilities this coupl…
A novel platform for two-dimensional chiral topological superconductivity
Jian Li, Titus Neupert, Zhi Jun Wang +3
We show that the surface of an -wave superconductor decorated with a two-dimensional lattice of magnetic impurities can exhibit chiral topological superconductivity. If impuriti…