Two-dimensional spin liquids with Z 2 topological order in an array of quantum wires
Abstract
Insulating Z2 spin liquids are a phase of matter with bulk anyonic quasiparticle excitations and ground-state degeneracies on manifolds with nontrivial topology. We construct a time-reversal symmetric Z2 spin liquid in two spatial dimensions using an array of quantum wires. We identify the anyons as kinks in the appropriate Luttinger-liquid description, compute their mutual statistics, and construct local operators that transport these quasiparticles. We also present a construction of a fractionalized Fermi liquid (FL∗) by coupling the spin sector of the Z2 spin liquid to a Fermi liquid via a Kondo-like coupling. © 2016 American Physical Society.
Date Published
Journal
Physical Review B
Volume
94
Issue
19
Number of Pages
195130+
ISBN Number
2469-9950, 2469-9969
URL
https://link.aps.org/doi/10.1103/PhysRevB.94.195130
DOI
10.1103/PhysRevB.94.195130
Alternate Journal
Phys. Rev. B
Research Area
Group (Lab)
Debanjan Chowdhury Group
Funding Source
DMR-1360789
GBMF-4303
DMR-13001648