Higher Energy Composite Fermion Levels in the Fractional Quantum Hall Effect

Abstract

Even though composite fermions in the fractional quantum Hall liquid are well established, it is not yet known up to what energies they remain intact. We probe the high-energy spectrum of the 1/3 liquid directly by resonant inelastic light scattering, and report the observation of a large number of new collective modes. Supported by our theoretical calculations, we associate these with transitions across two or more composite fermions levels. The formation of quasiparticle levels up to high energies is direct evidence for the robustness of topological order in the fractional quantum Hall effect.

4 pages, 5 figures

References in corpus (5)

• Non-Abelian Anyons and Topological Quantum Computation
• Synthetic magnetic fields for ultracold neutral atoms
• Splitting of Long-Wavelength Modes of the Fractional Quantum Hall Liquid at $\nu =1/3$
• Anomalous structure in the single particle spectrum of the fractional quantum Hall effect
• Spin-texture and magneto-roton excitations at nu=1/3

Cited by in corpus (20)

• Thirty Years of Composite Fermions and Beyond
• Wavefunctionology: The Special Structure of Certain Fractional Quantum Hall Wavefunctions
• The nature of composite fermions and the role of particle hole symmetry: A microscopic account
• State Counting for Excited Bands of the Fractional Quantum Hall Effect: Exclusion Rules for Bound Excitons
• Phase Diagram of Fractional Quantum Hall Effect of Composite Fermions in Multi-Component Systems
• Quasiparticles and excitons for the Pfaffian quantum Hall state
• Positions of the magnetoroton minima in the fractional quantum Hall effect
• A note contrasting two microscopic theories of the fractional quantum Hall effect
• Observation of non-conventional spin waves in composite fermion ferromagnets
• Nature of Quasielectrons and the Continuum of Neutral Bulk Excitations in the Laughlin Quantum Hall Fluids
• Shape of the magnetoroton at $\nu =1/3$ and $\nu =7/3$ in real samples
• Neutral Collective Modes in Spin-Polarized Fractional Quantum Hall States at Filling Factors 1/3, 2/5, 3/7, and 4/9
• Gapped Excitations of unconventional FQHE states in the Second Landau Level
• Theory of inter-Landau level magnetoexcitons in bilayer graphene
• Splitting of Girvin-MacDonald-Platzman density wave and the nature of chiral gravitons in fractional quantum Hall effect
• Unlocking new regimes in fractional quantum Hall effect with quaternions
• Possible continuous transition from fractional quantum Hall to stripe phase at ${\nu }_e=7/3$
• Domain Textures in the Fractional Quantum Hall Effect
• Very high-energy collective states of partons in fractional quantum Hall liquids
• Generalization of Laughlin's Theory for the Fractional Quantum Hall Effect