Localizing Fractional Quasiparticles on Graphene Quantum Hall Antidots
Scott M. Mills, D. V. Averin, Xu Du
Abstract
We report localization of fractional quantum Hall (QH) quasiparticles on graphene antidots. By studying coherent tunneling through the localized QH edge modes on the antidot, we measured the QH quasiparticle charges to be approximately ±e/3 at fractional fillings of ν=±1/3. The Dirac spectrum in graphene allows large energy scales and robust quasiparticle localization against thermal excitation. The capability of localizing fractional quasiparticles on QH antidots brings promising opportunities for realizing anyon braiding and novel quantum electronics.
Topics & Concepts
QuasiparticlePhysicsQuantum Hall effectCondensed matter physicsFractional quantum Hall effectGrapheneQuantum mechanicsQuantum tunnellingExcitationDirac (video compression format)QuantumQuantum spin Hall effectElectronSuperconductivityNeutrinoQuantum and electron transport phenomenaGraphene research and applicationsQuantum Information and Cryptography