556 citations · 2.3k across the 38 of their papers we have counts for
38 papers
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…
Trion Excitations in Twisted Bilayer Graphene: A Quantum Monte Carlo Study
Shibo Shan, Cheng Huang, Patrick Ledwith +1
Determining the nature of charge carriers is a fundamental goal in the study of strongly correlated electron systems. Here, we employ the continuous-field momentum-space quantum Mo…
Monte Carlo Studies of Twisted Bilayer Graphene: Strain and Thermal Fluctuations
Johannes S. Hofmann, Patrick Ledwith, Ashvin Vishwanath +2
We study the phase diagram of twisted bilayer graphene at charge neutrality as a function of twist angle , uniaxial heterostrain , and temperature using sign-pr…
Controlled expansion for correlated electrons with concentrated kinematics
Pavel A Nosov, Eslam Khalaf, Patrick Ledwith
We introduce a systematic expansion tailored to systems with strong local interactions and capable of computing response functions, including finite DC transport, analytically. The…
The ideal limit of rhombohedral graphene: Interaction-induced layer-skyrmion lattices and their collective excitations
Tixuan Tan, Patrick J. Ledwith, Trithep Devakul
We introduce an ideal limit of rhombohedral graphene multilayers. In this limit, we show analytically how short-range repulsion stabilizes a layer-pseudospin skyrmion lattice, whic…
Four Moiré materials at One Magic Angle in Helical Quadrilayer Graphene
Manato Fujimoto, Naoto Nakatsuji, Ashvin Vishwanath +1
We introduce helical twisted quadrilayer graphene (HTQG), four graphene sheets rotated by the same small angle, as a versatile and experimentally accessible platform for correlated…