Coexistence of metallic and nonmetallic properties in the pyrochlore Lu2Rh2O7

@article{Hallas2019CoexistenceOM,
  title={Coexistence of metallic and nonmetallic properties in the pyrochlore Lu2Rh2O7},
  author={Alannah M Hallas and Arzoo Z. Sharma and Cole Mauws and Qiang Chen and Haidong Zhou and Cui Ding and Zizhou Gong and Makoto Tachibana and P M Sarte and John Paul Attfield and Graeme M Luke and Christopher R Wiebe},
  journal={npj Quantum Materials},
  year={2019},
  volume={4},
  pages={1-6}
}
Transition metal oxides of the 4d and 5d block have recently become the targets of materials discovery, largely due to their strong spin–orbit coupling that can generate exotic magnetic and electronic states. Here, we report the high-pressure synthesis of Lu2Rh2O7, a new cubic pyrochlore oxide based on 4d5 Rh4+, and characterizations via thermodynamic, electrical transport, and muon spin relaxation measurements. Magnetic susceptibility measurements reveal a large temperature-independent Pauli… 
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References

SHOWING 1-10 OF 65 REFERENCES
Superconductivity in a pyrochlore oxide, Cd2Re2O7
We make the first report that a metallic pyrochlore oxide, Cd2Re2O7, exhibits type II superconductivity at 1.1 K. The pyrochlore oxide is known to be a geometrically frustrated system, which includes
Emergent excitation at the magnetic metal-insulator transition in the pyrochlore osmate Cd2Os2O7
The rich physics manifested by 5d oxides falls outside the Mott-Hubbard paradigm used to successfully explain the electronic and magnetic properties of 3d oxides. Much consideration has been given to
Spin-orbit-driven magnetic structure and excitation in the 5d pyrochlore Cd2Os2O7
TLDR
The magnetic structure in Cd2Os2O7 is resolved with neutron diffraction and then via resonant inelastic X-ray scattering determine the salient electronic and magnetic energy scales controlling the MIT.
Crystal Structure and Magnetic Properties of the Tri-layered Perovskite Sr4Rh3O10: A New Member of the Strontium Rhodates Family
The tri-layered perovskite Sr4Rh3O10 is reported for the first time. High-pressure and high-temperature heating (6 GPa and 1500 C) brought about successful preparation of a polycrystalline sample of
A novel non-Fermi-liquid state in the iron-pnictide FeCrAs
We report transport and thermodynamic properties of stoichiometric single crystals of the hexagonal iron-pnictide FeCrAs. The in-plane resistivity shows an unusual "non-metallic" dependence on
Hidden spin liquid in an antiferromagnet: Applications to FeCrAs
The recently studied material FeCrAs exhibits a surprising combination of experimental signatures, with metallic, Fermi liquid like specific heat but resistivity showing strong non-metallic
Two-Dimensional Fermi Liquid Behavior of the Superconductor Sr2RuO4
We report detailed normal state measurements of the resistivity, magnetic susceptibility and specific heat of high-quality single crystals of Sr 2 RuO 4 , the only copper-free, layered perovskite
Li2RhO3: A spin-glassy relativistic Mott insulator
Motivated by the rich interplay among electronic correlation, spin-orbit coupling (SOC), crystal-field splitting, and geometric frustrations in the honeycomb-like lattice, we systematically
Optical properties and electronic structure of the nonmetallic metal FeCrAs
The complex optical properties of a single crystal of hexagonal FeCrAs (TN � 125 K) have been determined above and below TN over a wide frequency range in the planes (along the b axis) and along the
High-Pressure Synthesis, Crystal Structure Determination, and a Ca Substitution Study of the Metallic Rhodium Oxide NaRh2O4
The sodium rhodate NaRh2O4 was synthesized for the first time and characterized by neutron and X-ray diffraction studies and measurements of magnetic susceptibility, specific heat, electrical
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