Using photoluminescence microscopy enhanced by MRI, we visualize in real space both electron and nuclear polarization occurring in non-equilibrium FQH liquids. We observe stripe-like regions comprising FQH excited states which discretely form when the FQH liquid is excited by a source-drain current. These regions are topologically protected and deformable, and give rise to bidirectionally polarized nuclear spins as spin-resolved electrons flow across their boundaries.
@article{arxiv.1606.06416,
title = {Non-equilibrium fractional quantum Hall states visualized by optically detected MRI},
author = {John N. Moore and Junichiro Hayakawa and Takaaki Mano and Takeshi Noda and Go Yusa},
journal= {arXiv preprint arXiv:1606.06416},
year = {2017}
}