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Two-dimensional spin liquids with Z 2 topological order in an array of quantum wires

Cornell Affiliated Author(s)

Author

Aavishkar Patel
Debanjan Chowdhury

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

Group (Lab)

Debanjan Chowdhury Group

Funding Source

DMR-1360789
GBMF-4303
DMR-13001648

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