Nature of quasielectrons and the continuum of neutral bulk excitations in Laughlin quantum Hall fluids

Phys Rev Lett. 2014 Jan 17;112(2):026804. doi: 10.1103/PhysRevLett.112.026804. Epub 2014 Jan 16.

Abstract

We construct model wave functions for a family of single-quasielectron states supported by the ν = 1/3 fractional quantum Hall fluid. The charge e* = e/3 quasielectron state is identified as a composite of a charge-2e* quasiparticle and a -e* quasihole, orbiting around their common center of charge with relative angular momentum nℏ > 0, and corresponds precisely to the "composite fermion" construction based on a filled n = 0 Landau level plus an extra particle in level n > 0. An effective three-body model (one 2e* quasiparticle and two -e* quasiholes) is introduced to capture the essential physics of the neutral bulk excitations.