Structural Phase Transition in the Superconducting Pyrochlore Oxide Cd2Re2O7

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.

4 pages, 4figures, proceeding for ISSP8

References in corpus (1)

• Superconductivity at 1 K in Cd2Re2O7

Cited by in corpus (11)

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• Electron Correlation and Pairing States in Superconductors without Inversion Symmetry
• Magnetoelectric effects in heavy-fermion superconductors without inversion symmetry
• Low Temperature Symmetry of Pyrochlore Oxide Cd2Re2O7
• Pyrochlore Oxide Superconductor Cd2Re2O7 Revisited
• Correlations and Semimetallic Behaviors in Pyrochlore Oxide Cd2Re2O7
• Odd-parity multipole fluctuation and unconventional superconductivity in locally noncentrosymmetric crystal
• Successive spatial symmetry breaking under high pressure in the spin-orbit-coupled metal Cd2Re2O7
• Temperature Dependence of the Magnetic Penetration Depth in the Vortex State of the Pyrochlore Superconductor, Cd2Re2O7
• Domain Control by Adjusting Anisotropic Stress in Pyrochlore Oxide Cd2Re2O7
• Electronic Self-Organization in the β-Pyrochlore Oxide CsW2O6