Composite Fermion Pairing Induced by Landau Level Mixing
Tongzhou Zhao, Ajit C. Balram, J. K. Jain
Abstract
Pairing of composite fermions provides a possible mechanism for fractional quantum Hall effect at even denominator fractions and is believed to serve as a platform for realizing quasiparticles with non-Abelian braiding statistics. We present results from fixed-phase diffusion Monte Carlo calculations which predict that substantial Landau level mixing can induce a pairing of composite fermions at filling factors ν=1/2 and ν=1/4 in the l=-3 relative angular momentum channel, thereby destabilizing the composite-fermion Fermi seas to produce non-Abelian fractional quantum Hall states.
Topics & Concepts
Composite fermionPairingPhysicsQuasiparticleFermionQuantum Hall effectLandau quantizationMixing (physics)Condensed matter physicsFractional quantum Hall effectMomentum (technical analysis)Quantum mechanicsFilling factorQuantum spin Hall effectElectronSuperconductivityFinanceEconomicsQuantum and electron transport phenomenaPhysics of Superconductivity and MagnetismTopological Materials and Phenomena