Unconventional aspects of electronic transport in delafossite oxides

Abstract

The electronic transport properties of the delafossite oxides ABO${}_2$ are usually understood in terms of two well separated entities, namely, the triangular A${}^{+}$ and (BO${}_2$)${}^{-}$ layers. Here we review several cases among this extensive family of materials where the transport depends on the interlayer coupling and displays unconventional properties. We review the doped thermoelectrics based on CuRhO${}_2$ and CuCrO${}_2$, which show a high-temperature recovery of Fermi-liquid transport exponents, as well as the highly anisotropic metals PdCoO${}_2$, PtCoO${}_2$ and PdCrO${}_2$ where the sheer simplicity of the Fermi surface leads to unconventional transport. We present some of the theoretical tools that have been used to investigate these transport properties and review what can and cannot be learned from the extensive set of electronic structure calculations that have been performed.

35 pages, 19 figures

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Cited by in corpus (13)

• From basic properties to the Mott design of correlated delafossites
• Growth of CuFeO${}_2$ Single Crystals by the Optical Floating-Zone Technique
• Electrons in helical magnetic field: a new class of topological metals
• Correlation in transport coefficients of hole-doped CuRhO${}_2$ single crystals
• Metallic delafossite thin films for unique device applications
• Finite-size effects of electron transport in PdCoO${}_2$
• Unraveling the unusually high electrical conductivity of the delafossite metal PdCoO${}_2$
• Investigation of Planckian behavior in a high-conductivity oxide: PdCrO${}_2$
• Adsorbate-induced formation of a surface-polarity-driven nonperiodic superstructure
• $T-$linear resistivity from magneto-elastic scattering: application to PdCrO${}_2$
• Intermediate-scale theory for electrons coupled to frustrated local-moments
• Layer-Resolved Many-Electron Interactions in Delafossite PdCoO2 from Standing-Wave Photoemission Spectroscopy
• Revisiting the metal-to-metal transition in $2H$-AgNiO${}_2$