Quantum criticality of the kagome antiferromagnet with Dzyaloshinskii-Moriya interactions

Abstract

We investigate the zero-temperature phase diagram of the nearest-neighbor kagome antiferromagnet in the presence of Dzyaloshinksii-Moriya interaction. We develop a theory for the transition between Z2 spin liquids with bosonic spinons and a phase with antiferromagnetic long-range order. Connections to recent numerical studies and experiments are discussed.

8 pages, 7 figures; (v2) corrected figure