Abstract
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 QSL.
- Received 15 December 2021
- Revised 23 March 2022
- Accepted 9 May 2022
DOI:https://doi.org/10.1103/PhysRevB.105.L201110
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