Correlations and Semimetallic Behaviors in Pyrochlore Oxide Cd2Re2O7

Abstract

Electronic properties of the metallic pyrochlore oxide Cd2Re2O7 are studied by means of electrical resistivity and Hall measurements. Semimetallic band structures are revealed as expected from band structure calculations. It is found that large changes in carrier density and mass occur at the structural phase transition at Ts1 = 200 K. A large mass enhancement is observed, particularly for the high-temperature phase with the ideal pyrochlore structure, suggesting that an anomalous correlation has an important effect on the itinerant electrons in the pyrochlore lattice.

4 pages, 4 figures, J. Phys. Soc. Jpn., in press

References in corpus (10)

• Superconductivity at 1 K in Cd2Re2O7
• Superconductivity in the Correlated Pyrochlore Cd_2Re_2O_7
• Low Temperature Symmetry of Pyrochlore Oxide Cd2Re2O7
• Electronic structure of the pyrochlore metals Cd2Os2O7 and Cd2Re2O7
• Magnetic and superconducting properties of Cd2Re2O7: Cd NMR and Re NQR
• Structural Phase Transition in the Superconducting Pyrochlore Oxide Cd2Re2O7
• Superconducting properties of the pyrochlore oxide Cd2Re2O7
• The second phase transition in the pyrochlore oxide Cd2Re2O7
• High-pressure study on the superconducting pyrochlore oxide Cd2Re2O7
• Quasiparticle Excitation in the Superconducting Pyrochlore Cd2Re2O7 Probed by Muon Spin Rotation

Cited by in corpus (16)

• A ferroelectric-like structural transition in a metal
• Parity-breaking phases of spin-orbit-coupled metals with gyrotropic, ferroelectric and multipolar orders
• Extremely strong-coupling superconductivity and anomalous lattice properties in the beta-pyrochlore oxide KOs2O6
• A parity-breaking electronic nematic phase transition in the spin-orbit coupled metal Cd${}_2$Re${}_2$O${}_7$
• Odd-parity superconductivity in the vicinity of inversion symmetry breaking in spin-orbit-coupled systems
• Pyrochlore Oxide Superconductor Cd2Re2O7 Revisited
• Structural Order Parameter in the Pyrochlore Superconductor Cd2Re2O7
• Successive spatial symmetry breaking under high pressure in the spin-orbit-coupled metal Cd2Re2O7
• Anomalous magnetic phase in an undistorted pyrochlore oxide Cd2Os2O7 induced by geometrical frustration
• The electrical properties of Cd2Re2O7 under pressure
• Split Fermi Surfaces of the Spin-Orbit-Coupled Metal Cd2Re2O7 Probed by de Haas-van Alphen Effect
• First-principles studies of spin-orbital physics in pyrochlore oxides
• Electrical and Thermal Transport Properties of the beta-Pyrochlore Oxide CsW2O6
• High-pressure Raman study on the superconducting pyrochlore oxide Cd2Re2O7
• Metal-insulator transitions in pyrochlore oxides
• Domain Control by Adjusting Anisotropic Stress in Pyrochlore Oxide Cd2Re2O7