A Quantum Dipolar Spin Liquid

TL;DR

This paper proposes that dipolar interactions among polar molecules can stabilize quantum spin liquids on triangular and kagome lattices, leading to chiral states with edge modes, advancing the understanding of quantum entangled magnetic phases.

Contribution

It introduces a method to realize dipolar Heisenberg antiferromagnets with polar molecules, demonstrating stabilization of spin liquids and chiral states on specific lattices.

Findings

Dipolar interactions stabilize spin liquids on triangular and kagome lattices.

Chiral spin liquids with edge modes can form spontaneously.

A practical route to synthesize these states using polar molecules is proposed.

Abstract

Quantum spin liquids are a new class of magnetic ground state in which spins are quantum mechanically entangled over macroscopic scales. Motivated by recent advances in the control of polar molecules, we show that dipolar interactions between S=1/2 moments stabilize spin liquids on the triangular and kagome lattices. In the latter case, the moments spontaneously break time-reversal, forming a chiral spin liquid with robust edge modes and emergent semions. We propose a simple route toward synthesizing a dipolar Heisenberg antiferromagnet from lattice-trapped polar molecules using only a single pair of rotational states and a constant electric field.