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

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