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

Article

关键词: RESONATING-VALENCE-BOND;    LUTTINGERS THEOREM;    KAGOME-LATTICE;    GROUND-STATE;    GAUGE-THEORY;    FIELD THEORY;    EXCITATIONS;    PHASES;   

DOI  :  10.1103/PhysRevB.94.195130

来源: SCIE

【 摘 要 】

Insulating Z(2) 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 Z(2) 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 Z(2) spin liquid to a Fermi liquid via a Kondo-like coupling.

【 授权许可】

Free