Symmetry-breaking Skyrmion states in fractional quantum Hall systems

Abstract

We calculate in an analytical fashion the energies and net spins of Skyrmions in fractional quantum Hall systems, based on the suggestion that Skyrmion states are spontaneously L(Z) and S-Z symmetry-breaking states. The quasihole-Skyrmion state with a charge -e/3 around nu = 1/3, where the ground state is known as a spin-polarized ferromagnetic state, is found to exist even in high magnetic fields up to about 7 T for GaAs samples.