We propose an experimentally-feasible system based on spin transitions in thefractional quantum Hall effect regime where parafermions, high-ordernon-abelian excitations, can be potentially realized. We provide aproof-of-concept experiments showing that in specially designedheterostructures spin transitions at a filling factor 2/3 can be inducedelectrostatically, allowing local control of polarization and on-demandformation of helical domain walls with fractionalized charge excitations, apre-requisite ingredient for parafermions formation. We also present exactdiagonalization numerical studies of domain walls formed between domains withdifferent spin polarization in the fractional quantum Hall effect regime andshow that they indeed possess electronic and magnetic structure needed forparafermion formation when coupled to an s-wave superconductor.
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