Composite fermion theory of collective excitations in fractional quantum Hall effect
arXiv:cond-mat/9511136 · doi:10.1103/PhysRevLett.76.1332
Abstract
The low energy neutral excitations of incompressible fractional quantum Hall states are called collective modes or magnetic excitons. This work develops techniques for computing their dispersion at general filling fractions for reasonably large systems. New structure is revealed; in particular, the collective mode at 1/3 is found to possess several minima, with the energy of the principal minimum significantly smaller than the earlier estimate. \pacs{73.40.Hm, 73.20.Dx, 73.20.Mf}
4 pages, 3 postscript figures
References in corpus (5)
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- Hamiltonian Description of Composite Fermions: Magnetoexciton Dispersions
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- Neutral Collective Modes in Spin-Polarized Fractional Quantum Hall States at Filling Factors 1/3, 2/5, 3/7, and 4/9
- Hamiltonian Theory of the FQHE: Conserving Approximation for Incompressible Fractions
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- Static structure factor and the dispersion of the Girvin-MacDonald-Platzman density mode for fractional quantum Hall fluids on the Haldane sphere
- Dispersion of neutral collective modes in partonic fractional quantum Hall states and its applications to paired states of composite fermions