English

Glassy Spin Freezing and Gapless Spin Dynamics in a Spatially Anisotropic Triangular Antiferromagnet Ag2MnO2

Strongly Correlated Electrons 2009-07-21 v1
Authors: S. Ji , J. -H. Kim , Y. Qiu , M. Matsuda , H. Yoshida , Z. Hiroi , M. A. Green , T. Ziman , S. -H. Lee
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Abstract

Using elastic and inelastic neutron scattering techniques, we show that upon cooling a spatially anisotropic triangular antiferromagnet Ag2_2MnO2_2 freezes below Tf ∼50T_f ~\sim 50 K into short range collinear state. The static spin correlations are extremely two-dimensional, and the spin fluctuations are gapless with two characteristic relaxation rates that behave linearly with temperature.

Keywords

triangular antiferromagnet spin freezing glassy state gapless spin dynamics neutron scattering two-dimensional correlations

Cite

@article{arxiv.0907.3157,
  title  = {Glassy Spin Freezing and Gapless Spin Dynamics in a Spatially Anisotropic Triangular Antiferromagnet Ag2MnO2},
  author = {S. Ji and J. -H. Kim and Y. Qiu and M. Matsuda and H. Yoshida and Z. Hiroi and M. A. Green and T. Ziman and S. -H. Lee},
  journal= {arXiv preprint arXiv:0907.3157},
  year   = {2009}
}

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