Key points are not available for this paper at this time.
We argue that the S=1/2 kagome antiferromagnet undergoes a quantum phase transition when the Dzyaloshinskii-Moriya coupling is increased. For DD₂ the system develops antiferromagnetic long-range order. The quantum critical point is found to be D₂0. 1J using exact diagonalizations and finite-size scaling. This suggests that the kagome compound ZnCu₃ (OH) ₆Cl₃ may be in a quantum critical region controlled by this fixed point.
Cépas et al. (Thu,) studied this question.