Static Critical Behavior of the Spin-Freezing Transition in the Geometrically Frustrated Pyrochlore Antiferromagnet Y2Mo2O7

M. J. P. Gingras; C. V. Stager; N. P. Raju; B. D. Gaulin; J. E. Greedan

doi:10.1103/PhysRevLett.78.947

Static Critical Behavior of the Spin-Freezing Transition in the Geometrically Frustrated Pyrochlore Antiferromagnet Y2Mo2O7

Disordered Systems and Neural Networks 2009-10-28 v1

Authors: M. J. P. Gingras , C. V. Stager , N. P. Raju , B. D. Gaulin , J. E. Greedan

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Abstract

Some frustrated pyrochlore antiferromagnets, such as Y2Mo2O7, show a spin-freezing transition and magnetic irreversibilities below a temperature Tf similar to what is observed nonlinear magnetization measurements on Y2Mo2O7 that provide strong evidence that there is an underlying thermodynamic phase transition at Tf, which is characterized by critical exponents \gamma \approx 2.8 and \beta \approx 0.8. These values are typical of those found in random spin glasses, despite the fact that the level of random disorder in Y2Mo2O7 is immeasurably small.

Keywords

spin-freezing transition critical exponents geometrical frustration pyrochlore antiferromagnet nonlinear magnetization random spin glass

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@article{arxiv.cond-mat/9611121,
  title  = {Static Critical Behavior of the Spin-Freezing Transition in the Geometrically Frustrated Pyrochlore Antiferromagnet Y2Mo2O7},
  author = {M. J. P. Gingras and C. V. Stager and N. P. Raju and B. D. Gaulin and J. E. Greedan},
  journal= {arXiv preprint arXiv:cond-mat/9611121},
  year   = {2009}
}

Comments

Latex file, calls for 4 encapsulated postscript figures (included). Submitted to Phys. Rev. Letters.

Static Critical Behavior of the Spin-Freezing Transition in the Geometrically Frustrated Pyrochlore Antiferromagnet Y2Mo2O7

Abstract

Keywords

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