Symmetry-breaking Skyrmion states in fractional quantum Hall systems

@article{Ahn1997SymmetrybreakingSS,
title={Symmetry-breaking Skyrmion states in fractional quantum Hall systems},
author={Kang-Hun Ahn and K. J. Chang},
journal={Physical Review B},
year={1997},
volume={55},
pages={6735-6738}
}

We calculate in an analyical 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.

A novel type of charged excitation, known as a Skyrmion, has recently been discovered in quantum Hall systems with filling factor near ν=1. A Skyrmion — which can be thought of as a topological twist… Expand