Structural Phase Transition in the Superconducting Pyrochlore Oxide Cd2Re2O7

M. Hanawa; J. Yamaura; Y. Muraoka; F. Sakai; Z. Hiroi

doi:10.1016/S0022-3697(02)00090-2

Structural Phase Transition in the Superconducting Pyrochlore Oxide Cd2Re2O7

Superconductivity 2009-11-07 v1

Authors: M. Hanawa , J. Yamaura , Y. Muraoka , F. Sakai , Z. Hiroi

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Abstract

We report a structural phase transition found at Ts = 200 K in a pyrochlore oxide Cd2Re2O7 which shows superconductivity at Tc = 1.0 K. X-ray diffractionexperiments indicate that the phase transition is of the second order, from a high-temperature phase with the ideal cubic pyrochlore structure (space group Fd-3m) to a low-temperature phase with another cubic structure (space group F-43m). It is accompanied by a dramatic change in the resistivity and magnetic susceptibility and thus must induce a significant change in the electronic structure of Cd2Re2O7.

Keywords

phase transitions high-pressure phase transitions high-temperature superconductivity

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@article{arxiv.cond-mat/0109050,
  title  = {Structural Phase Transition in the Superconducting Pyrochlore Oxide Cd2Re2O7},
  author = {M. Hanawa and J. Yamaura and Y. Muraoka and F. Sakai and Z. Hiroi},
  journal= {arXiv preprint arXiv:cond-mat/0109050},
  year   = {2009}
}

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4 pages, 4figures, proceeding for ISSP8

Structural Phase Transition in the Superconducting Pyrochlore Oxide Cd2Re2O7

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