Charged skyrmions and topological origin of superconductivity in magic-angle graphene
Eslam Khalaf, Shubhayu Chatterjee, Nick Bultinck, Michael P. Zaletel, Ashvin Vishwanath
Abstract
bosons. Condensation of skyrmions leads to a superconductor, whose physical properties we calculate. More generally, we show how topological textures can mitigate Coulomb repulsion and provide a previously unexplored route to superconductivity. Our mechanism not only clarifies why several other moiré materials do not show superconductivity but also points to unexplored platforms where robust superconductivity is anticipated.
Topics & Concepts
SuperconductivityPhysicsSkyrmionCoulombCharge (physics)Topological quantum numberTopology (electrical circuits)Topological defectSymmetry (geometry)Condensed matter physicsGrapheneTwistNonlinear systemStackingTheoretical physicsTopological insulatorSymmetry breakingLattice (music)Symmetry protected topological orderCondensationMagnetic monopoleGraphene research and applicationsTopological Materials and PhenomenaSurface and Thin Film Phenomena