Low Temperature Symmetry of Pyrochlore Oxide Cd2Re2O7

Abstract

We report the X-ray study for the pyrochlore oxide Cd2Re2O7. Two symmetry-lowering structural transitions were observed at Ts1=200K and Ts2=120K. The former is of the second order from the ideal cubic pyrochlore structure with space group Fd-3m to a tetragonally distorted structure with I-4m2, while the latter is of the first order likely to another tetragonal space group I4122. We discuss the feature of the lattice deformation.

4 pages, 4 figures

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• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Superconductivity at 1 K in Cd2Re2O7
• Superconductivity in the Correlated Pyrochlore Cd_2Re_2O_7
• Magnetic and superconducting properties of Cd2Re2O7: Cd NMR and Re NQR
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Cited by in corpus (46)

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• Metallic "Ferroelectricity" in the Pyrochlore Cd2Re2O7
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• Rattling-Induced Superconductiviy in the Beta-Pyrochlore Oxides AOs2O6
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• Crystal growth, structural studies and superconducting properties of beta-pyrochlore KOs2O6
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• Structural Order Parameter in the Pyrochlore Superconductor Cd2Re2O7
• Possible Anisotropic Order Parameter in Pyrochlore Superconductor KOs${}_2$O${}_6$ Probed by Muon Spin Rotation
• Manipulation and braiding of Weyl nodes using symmetry-constrained phase transitions
• The nature of the tensor order in Cd2Re2O7
• Correlations and Semimetallic Behaviors in Pyrochlore Oxide Cd2Re2O7
• Antisymmetric Thermopolarization by Electric Toroidicity
• Odd-parity multipole fluctuation and unconventional superconductivity in locally noncentrosymmetric crystal
• Evidence of an improper displacive phase transition in Cd${}_2$Re${}_2$O${}_7$ via time-resolved coherent phonon spectroscopy
• Successive spatial symmetry breaking under high pressure in the spin-orbit-coupled metal Cd2Re2O7
• Spontaneous Spatial Inversion Symmetry Breaking and Spin Hall Effect in a Spin-ice Double-exchange Model on a Pyrochlore Lattice
• Odd-parity superconductivity near inversion breaking quantum critical point in one dimension
• The electrical properties of Cd2Re2O7 under pressure
• A second phase transition and superconductivity in the beta-pyrochlore oxide KOs2O6
• Split Fermi Surfaces of the Spin-Orbit-Coupled Metal Cd2Re2O7 Probed by de Haas-van Alphen Effect
• Strongly-coupled quantum critical point in an all-in-all-out antiferromagnet
• First-principles studies of spin-orbital physics in pyrochlore oxides
• Formation and Control of Twin Domains in the Pyrochlore Oxide Cd2Re2O7
• Low-Temperature Phase of the Cd${}_2$Re${}_2$O${}_7$ Superconductor: Ab initio Phonon Calculations and Raman Scattering
• Crystal structure of the inversion-breaking metal Cd2Re2O7
• Diffuse Scattering from Correlated Electron Systems
• Dichroism as a probe for parity-breaking phases of spin-orbit coupled metals
• Successive phase transitions of the spin-orbit-coupled metal Cd2Re2O7 probed by high-resolution synchrotron x-ray diffraction
• Optical Hall response in spin-orbit coupled metals: Comparative study of magnetic cluster monopole, quadrupole, and toroidal orders
• High-pressure Raman study on the superconducting pyrochlore oxide Cd2Re2O7
• Superconducting and Structural Transitions in the β-Pyrochlore Oxide KOs2O6 under High Pressure
• Chirality/Axiality-Induced Axiality/Chirality via Surface Polarization
• Domain Control by Adjusting Anisotropic Stress in Pyrochlore Oxide Cd2Re2O7
• Metal-insulator transitions in pyrochlore oxides
• Odd-parity multipole order in the spin-orbit coupled metallic pyrochlore Pb${}_2$Re${}_2$O${}_{7-\delta }$
• Nonlinear frequency-asymmetric optical response in chiral systems
• Structural order parameter and itinerant electron magnetism in Cd2Re2O7
• Symmetry Rules on Multipole Interactions under Crystallographic Point Groups and Application to Multiple-$Q$ Multipole States