Reversed-spin quasiparticles in fractional quantum Hall systems and their effect on photoluminescence

Abstract

The energy, interaction, and optical properties of reversed-spin quasielectrons (QE Rs) in fractional quantum Hall systems are studied. Based on the short range of the QE R–QE R repulsion, a partially unpolarized incompressible ν= 4 11 state is postulated within Haldane hierarchy scheme. To describe photoluminescence, a reversed-spin fractionally charged exciton hQE R (QE R bound to a valence hole h) is predicted. In contrast to its spin-polarized analog, hQE R is strongly bound and radiative.