Spin fluctuations in the magnetically ordered phase of frustrated pyrochlore systems

P. Bonville; I. Mirebeau; J. P. Sanchez

doi:10.1063/1.2928963

Spin fluctuations in the magnetically ordered phase of frustrated pyrochlore systems

Strongly Correlated Electrons 2009-11-13 v1

Authors: P. Bonville , I. Mirebeau , J. P. Sanchez

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Abstract

Two geometrically frustrated pyrochlore stannates, undergoing long range magnetic order below 1K, were investigated at very low temperature. Anomalies in the behaviour of hyperfine quantities are found, by 155Gd Mossbauer spectroscopy in Gd2Sn2O7 and by low temperature specific heat measurements in Tb2Sn2O7. They are interpreted in terms of fluctuations of the correlated Gd or Tb spins, using a model two-level system (the nuclear spins) submitted to a randomly fluctuating (hyperfine) field.

Keywords

magnetic materials and spin systems frustrated magnetism unconventional superconductivity

Cite

@article{arxiv.0809.2732,
  title  = {Spin fluctuations in the magnetically ordered phase of frustrated pyrochlore systems},
  author = {P. Bonville and I. Mirebeau and J. P. Sanchez},
  journal= {arXiv preprint arXiv:0809.2732},
  year   = {2009}
}

Comments

6 pages, 4 figures

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