Statistics of spinons in the spin-liquid phase of Cs2CuCl4

Details Statistics of spinons in the spin-liquid phase of Cs2CuCl4 Statistics of spinons in the spin-liquid phase of Cs2CuCl4

2003-02-21

arxiv.org/abs/cond-mat/0302452v2

Phys. Rev. B 68, 094412 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, including 4 figures

Scientific paper

10.1103/PhysRevB.68.094412

Motivated by a recent experiment on Cs2CuCl4, we study the spin dynamics of the spin-liquid phase of the spin-1/2 frustrated Heisenberg antiferromagnet on the anisotropic triangular lattice. There have been two different proposals for the spin-liquid phase of Cs2CuCl4. These spin-liquid states support different statistics of spinons; the bosonic Sp(N) large-N mean field theory predicts bosonic spinons while the SU(2) slave-boson mean field theory leads to fermionic spinons. We compute the dynamical spin structure factor for both types of spin-liquid state at zero and finite temperatures. While at zero temperature both theories agree with experiment on a qualitative level, they show substantial differences in the temperature dependence of the dynamical spin structure factor.

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