Electrons undergoing a Mott transition may shed their charge but persist as neutral excitations of a quantum spin liquid (QSL). We introduce concrete two-dimensional models exhibiting this exotic behavior as they transition from superconducting or topological phases into fully charge-localized insulators. We study these Mott transitions and the confinement of neutral fermions at a second transition into a symmetry-broken phase. In the process, we also derive coupled-wire parent Hamiltonians for a non-Abelian QSL and a Z4 QSL.
@article{arxiv.2112.02112,
title = {Quantum criticality and confinement in weak Mott insulators},
author = {Eyal Leviatan and David F. Mross},
journal= {arXiv preprint arXiv:2112.02112},
year = {2022}
}