Quantum phase transition induced by Dzyaloshinskii-Moriya interactions in the kagome antiferromagnet

By O. Cépas, C. M. Fong, P. Leung, C. Lhuillier. 2008

136 citations recorded by the source corpus.

We argue that the S=1/2 kagome antiferromagnet undergoes a quantum phase transition when the Dzyaloshinskii-Moriya coupling is increased. For $D D_c$ the system develops antiferromagnetic long-range order. The quantum critical point is found to be $D_c \simeq 0.1J$ using exact diagonalizations and finite-size scaling. This suggests that the kagome compound ZnCu$_3(OH)$_6$Cl$_3$ may be in a quantum critical region controlled by this fixed point.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/603648966199197a942aed6a6c399ab81c4ef541

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. B. Powell
2. L. Balents
3. R. McKenzie
4. Ashvin Vishwanath
5. Xianhui Chen
6. Xiao-Liang Qi
7. N. P. Armitage
8. E. Mele

In Condensed Matter Physics

1. B. Powell
2. R. McKenzie
3. L. Balents
4. K. Kanoda
5. Yi Zhou
6. T. Ng
7. Ashvin Vishwanath
8. Simon Trebst

Citations in the corpus

• Quantum frustration in organic Mott insulators: from spin liquids to unconventional superconductors (2010, background): “For example, for the kagome lattice it can induce a quantum phase transition from a spin liquid state to an ordered state for D > 0.1J (Cépas et al., 2008).”
• Spin liquids in frustrated magnets (2010, background): “Thus, the 'real' ground state in the kagome materials is probably strongly perturbed by spin–orbit coupling, disorder, further-neighbour interactions and so o”