The nature of the low-energy excitations in the short-range-ordered region of Cs2CuCl4 as revealed by 133Cs nuclear magnetic resonance

  title={The nature of the low-energy excitations in the short-range-ordered region of Cs2CuCl4 as revealed by 133Cs nuclear magnetic resonance},
  author={M. -A. Vachon and Georgios Koutroulakis and V. F. Mitrovi'c and Ookie Ma and J. B. Marston and Arneil P. Reyes and Philip L. Kuhns and R Coldea and Zbigniew Tylczyński},
  journal={New Journal of Physics},
We report nuclear magnetic resonance (NMR) measurements of the spin-1/2 anisotropic triangular lattice antiferromagnet Cs2CuCl4 as a function of temperature and applied magnetic field. The observed temperature and magnetic field dependence of the NMR relaxation rate suggests that low-energy excitations in the short-range-ordered region stabilized over a wide range of intermediate fields and temperatures of the phase diagram (sketched in figure 1(a)) are gapless or nearly gapless fermionic… 

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