556 citations · 2.3k across the 38 of their papers we have counts for
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Skyrmion Fractional Chern Insulator: An Intrinsically Multiband Route to Fractionalization in Rhombohedral Graphene
Julian May-Mann, Tixuan Tan, Patrick J. Ledwith +2
We propose an unconventional microscopic origin for the fractional quantum anomalous Hall (FQAH) effect in rhombohedral graphene moiré superlattices: skyrmion fractionalization. We…
The ideal limit of rhombohedral graphene: Dynamical skyrmion lattices and their excitations
Tixuan Tan, Patrick J. Ledwith, Trithep Devakul
We introduce an interacting ideal limit of rhombohedral graphene in which interactions spontaneously generate a correlated Chern insulator. Our analysis reveals that this Chern ins…
Imaging Coulomb interactions and migrating Dirac cones in twisted graphene by local quantum oscillations
Matan Bocarsly, Indranil Roy, Vishal Bhardwaj +12
Flat band moiré graphene systems have emerged as a quintessential platform to investigate correlated phases of matter. A plethora of interaction-driven ground states have been prop…
Strong interactions and isospin symmetry breaking in a supermoiré lattice
Yonglong Xie, Andrew T. Pierce, Jeong Min Park +10
In multilayer moiré heterostructures, the interference of multiple twist angles ubiquitously leads to tunable ultra-long-wavelength patterns known as supermoiré lattices. However,…
Higher vortexability: zero field realization of higher Landau levels
Manato Fujimoto, Daniel E. Parker, Junkai Dong +3
The rise of moiré materials has led to experimental realizations of integer and fractional Chern insulators in small or vanishing magnetic fields. At the same time, a set of minima…
Untwisting moiré physics: Almost ideal bands and fractional Chern insulators in periodically strained monolayer graphene
Qiang Gao, Junkai Dong, Patrick Ledwith +2
Moiré systems have emerged in recent years as a rich platform to study strong correlations. Here, we will discuss a simple, experimentally feasible setup based on periodically stra…
Exact Many-Body Ground States from Decomposition of Ideal Higher Chern Bands: Applications to Chirally Twisted Graphene Multilayers
Junkai Dong, Patrick J. Ledwith, Eslam Khalaf +2
Motivated by the higher Chern bands of twisted graphene multilayers, we consider flat bands with arbitrary Chern number with ideal quantum geometry. While bands differ fr…
Dirac cone spectroscopy of strongly correlated phases in twisted trilayer graphene
Cheng Shen, Patrick J. Ledwith, Kenji Watanabe +4
Mirror-symmetric magic-angle twisted trilayer graphene (MATTG) hosts flat electronic bands close to zero energy, and has been recently shown to exhibit abundant correlated quantum…
Fractional Chern insulators in magic-angle twisted bilayer graphene
Yonglong Xie, Andrew T. Pierce, Jeong Min Park +12
Fractional Chern insulators (FCIs) are lattice analogues of fractional quantum Hall states that may provide a new avenue toward manipulating non-abelian excitations. Early theoreti…
Superscreening by a Retroreflected Hole Backflow in Tomographic Electron Fluids
Qiantan Hong, Margarita Davydova, Patrick J Ledwith +1
Electron hydrodynamics gives rise to surprising correlated behaviors in which electrons "cooperate" to quench dissipation and reduce the electric fields needed to sustain the flow.…
The Hierarchy of Excitation Lifetimes in Two-Dimensional Fermi Gases
Patrick J Ledwith, Haoyu Guo, Leonid Levitov
Momentum-conserving quasiparticle collisions in two-dimensional Fermi gases give rise to a large family of exceptionally long-lived excitation modes. The lifetimes of these modes e…
Fermionic Retroreflection, Hole Jets and Magnetic Steering in 2D Electron Systems
Lev Haldar Kendrick, Patrick J Ledwith, Andrey Shytov +1
Electron interactions are usually probed indirectly, through their impact on transport coefficients. Here we describe a direct scheme that, in principle, gives access to the full a…
Tomographic Dynamics and Scale-Dependent Viscosity in Two-Dimensional Electron Systems
Patrick J Ledwith, Haoyu Guo, Andrey V Shytov +1
Fermi gases in two dimensions display a surprising collective behavior originating from the head-on carrier collisions. The head-on processes dominate angular relaxation at not-too…
Angular Superdiffusion and Directional Memory in Two-Dimensional Electron Fluids
Patrick Ledwith, Haoyu Guo, Leonid Levitov
We demonstrate that 2D Fermi liquids can support peculiar excitations that are not subject to Landau's dissipation. The long-lived excitations relax through correlated angula…