Critical Phenomena at the Antiferromagnetic Phase Transition of Azurite

P. T. Cong; B. Wolf; R. S. Manna; A. Brühl; S. Köhler; M. Lang

doi:10.3938/jkps.62.2193

Critical Phenomena at the Antiferromagnetic Phase Transition of Azurite

Strongly Correlated Electrons 2013-07-12 v1

Authors: P. T. Cong , B. Wolf , R. S. Manna , A. Brühl , S. Köhler , M. Lang

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Abstract

We report on high-resolution acoustic, specific-heat and thermal expansion measurements in the vicinity of the antiferromagnetic phase transition at T_N = 1.88 K on a high-quality single crystal of the natural mineral azurite. A detailed investigation of the critical contribution to the various quantities at T_N is presented. The set of critical exponents and amplitude ratios of the singular contributions above and below the transition indicate that the system can be reasonably well described by a three-dimensional Heisenberg antiferromagnet.

Keywords

azurite antiferromagnetic phase transition critical phenomena specific heat thermal expansion Heisenberg antiferromagnet critical exponents

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@article{arxiv.1206.0661,
  title  = {Critical Phenomena at the Antiferromagnetic Phase Transition of Azurite},
  author = {P. T. Cong and B. Wolf and R. S. Manna and A. Brühl and S. Köhler and M. Lang},
  journal= {arXiv preprint arXiv:1206.0661},
  year   = {2013}
}

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9 pages, 3 figures, proceedings of ICM 2012, JKPS

Critical Phenomena at the Antiferromagnetic Phase Transition of Azurite

Abstract

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