Coupled-wire construction of chiral spin liquids

We develop a coupled-wire construction of chiral spin liquids. The starting points are individual wires of electrons in the Mott regime that are subject to a Zeeman field and Rashba spin-orbit coupling. Suitable spin-flip couplings between the wires yield an Abelian chiral spin liquid state which supports spinon excitations above a bulk gap and chiral edge states. The approach generalizes to non-Abelian chiral spin liquids at level $k$ with parafermionic edge states.

Figure 1

Wires $b=n-1,...,n+2$ of layers $a=m$ and $m+1$ of the multilayer array of coupled wires.