711 citations · 2.4k across the 77 of their papers we have counts for
19 papers · 1 filter
Relaxation effects on Hartree-Fock ground states in twisted bilayer graphene at even integer fillings
Tianyu Kong, Alexander B. Watson, Lin Lin +2
A standard approach for studying magic angle twisted bilayer graphene (MATBG)'s correlated electronic phase diagram is to project the Coulomb interaction down to effective models o…
Relaxation-driven flat bands and topology in moiré transition metal dichalcogenide heterobilayers
Mitchell Luskin, Max Geier, Liang Fu +1
Moiré transition metal dichalcogenide (TMD) heterobilayers are commonly modeled by a continuum theory that yields topologically trivial bands, in contrast to their homobilayer coun…
Tunable atomically enhanced moiré Berry curvatures in twisted triple bilayer graphene
Konstantin Davydov, Ziyan Zhu, Noah Friedman +8
We report a twisted triple bilayer graphene platform consisting of three units of Bernal bilayer graphene consecutively twisted at 1.49° and 1.68°. We demonstrate the atomic recons…
Electron Collimation in Twisted Bilayer Graphene via Gate-defined Moiré Barriers
Wei Ren, Xi Zhang, Ziyan Zhu +6
Electron collimation via a graphene pn-junction allows electrostatic control of ballistic electron trajectories akin to that of an optical circuit. Similar manipulation of novel co…
Tunable Inter-Moiré Physics in Consecutively-Twisted Trilayer Graphene
Wei Ren, Konstantin Davydov, Ziyan Zhu +6
We fabricate a twisted trilayer graphene device with consecutive twist angles of 1.33 and 1.64 degrees, in which we electrostatically tune the electronic states from each of the tw…
Seeing moiré: convolutional network learning applied to twistronics
Diyi Liu, Mitchell Luskin, Stephen Carr
Moiré patterns made of two-dimensional (2D) materials represent highly tunable electronic Hamiltonians, allowing a wide range of quantum phases to emerge in a single material. Curr…
Bistritzer-MacDonald dynamics in twisted bilayer graphene
Alexander B. Watson, Tianyu Kong, Allan H. MacDonald +1
The Bistritzer-MacDonald (BM) model, introduced in \cite{Bistritzer2011}, attempts to capture the electronic properties of twisted bilayer graphene (TBG), even at incommensurate tw…
Gate-tunable Veselago Interference in a Bipolar Graphene Microcavity
Xi Zhang*, Wei Ren*, Elliot Bell +6
The relativistic charge carriers in monolayer graphene can be manipulated in manners akin to conventional optics (electron-optics): angle-dependent Klein tunneling collimates an el…
Dipole excitation of collective modes in viscous two-dimensional electron systems
Vera Andreeva, Denis A. Bandurin, Mitchell Luskin +1
We describe the structure of the time-harmonic electromagnetic field of a vertical Hertzian electric dipole source radiating over an infinite, translation invariant two-dimensional…
Twisted Trilayer Graphene: a Precisely Tunable Platform for Correlated Electrons
Ziyan Zhu, Stephen Carr, Daniel Massatt +2
We introduce twisted trilayer graphene (tTLG) with two independent twist angles as an ideal system for the precise tuning of the electronic interlayer coupling to maximize the effe…
Finite-size effects in wave transmission through plasmonic crystals: A tale of two scales
Matthias Maier, Mitchell Luskin, Dionisios Margetis
We study optical coefficients that characterize wave propagation through layered structures called plasmonic crystals. These consist of a finite number of stacked metallic sheets e…
Correlated Insulating States and Transport Signature of Superconductivity in Twisted Trilayer Graphene Moiré of Moiré Superlattices
Kan-Ting Tsai, Xi Zhang, Ziyan Zhu +5
Layers of two-dimensional materials stacked with a small twist-angle give rise to beating periodic patterns on a scale much larger than the original lattice, referred to as a moiré…
Moiré of Moiré: Modeling Mechanical Relaxation in Incommensurate Trilayer van der Waals Heterostructures
Ziyan Zhu, Paul Cazeaux, Mitchell Luskin +1
The incommensurate stacking of multi-layered two-dimensional materials is a challenging problem from a theoretical perspective and an intriguing avenue for manipulating their physi…
Efficient Computation of Kubo Conductivity for Incommensurate 2D Heterostructures
Daniel Massatt, Stephen Carr, Mitchell Luskin
Here we introduce a numerical method for computing conductivity via the Kubo Formula for incommensurate 2D bilayer heterostructures using a tight-binding framework. We begin with d…
Nonperturbative nonlinear effects in the dispersion relations for TE and TM plasmons on two-dimensional materials
Vera Andreeva, Mitchell Luskin, Dionisios Margetis
We analytically obtain the dispersion relations for transverse-electric (TE) and transverse-magnetic (TM) surface plasmon-polaritons in a nonlinear two-dimensional (2D) conducting…
Relaxation and Domain Formation in Incommensurate 2D Heterostructures
Stephen Carr, Daniel Massatt, Steven B. Torrisi +3
We introduce configuration space as a natural representation for calculating the mechanical relaxation patterns of incommensurate two-dimensional (2D) bilayers, bypassing supercell…
Duality between atomic configurations and Bloch states in twistronic materials
Stephen Carr, Daniel Massatt, Mitchell Luskin +1
The relative orientation (twist) of successive layers of stacked two-dimensional (2D) materials creates variations in the interlayer atomic registry. The variations often form a su…
Ultracompact amplitude modulator by coupling hyperbolic polaritons over a graphene-covered gap
Matthias Maier, Andrei Nemilentsau, Tony Low +1
The hyperbolic phonon-polaritons within the Reststrahlen band of hBN are of great interest for applications in nanophotonics as they are capable of propagating light signals with l…
Twistronics: Manipulating the Electronic Properties of Two-dimensional Layered Structures through their Twist Angle
Stephen Carr, Daniel Massatt, Shiang Fang +3
The ability in experiments to control the relative twist angle between successive layers in two-dimensional (2D) materials offers a new approach to manipulating their electronic pr…