Spin ice: magnetic excitations without monopole signatures using muon spin rotation.

@article{Dunsiger2011SpinIM,
  title={Spin ice: magnetic excitations without monopole signatures using muon spin rotation.},
  author={S. R. Dunsiger and Adam A. Aczel and Callan Arguello and Hanna A. Dąbkowska and A D Dabkowski and M-H Du and Tatsuo Goko and Behnam Javanparast and Tongyan Lin and Fanlong Ning and Hilary Noad and David J. Singh and Travis J Williams and Yasutomo J. Uemura and Michel J. P. Gingras and Graeme M Luke},
  journal={Physical review letters},
  year={2011},
  volume={107 20},
  pages={207207}
}
Theory predicts the low temperature magnetic excitations in spin ices consist of deconfined magnetic charges, or monopoles. A recent transverse-field (TF) muon spin rotation (μSR) experiment [S. T. Bramwell et al., Nature (London) 461, 956 (2009)] reports results claiming to be consistent with the temperature and magnetic field dependence anticipated for monopole nucleation-the so-called second Wien effect. We demonstrate via a new series of μSR experiments in Dy(2)Ti(2)O(7) that such an effect… CONTINUE READING