Mimicking cuprates: large orbital polarization in a metallic square-planar nickelate

Abstract

High temperature cuprate superconductivity remains a defining problem in condensed matter physics. Among myriad approaches to addressing this problem has been the study of alternative transition metal oxides with similar structures and 3d electron count that are suggested as proxies for cuprate physics. None of these analogs has been superconducting, and few are even metallic. Here, we report that the low-valent, quasi-two-dimensional trilayer compound, Pr4Ni3O8 avoids a charge-stripe ordered phase previously reported for La4Ni3O8, leading to a metallic ground state. By combining x-ray absorption spectroscopy and density functional theory calculations, we further find that metallic Pr4Ni3O8 exhibits a low-spin configuration and significant orbital polarization of the unoccupied eg states with pronounced dx2-y2 character near the Fermi energy, both hallmarks of the cuprate superconductors. Belonging to a regime of 3d electron count found for hole-doped cuprates, Pr4Ni3O8 thus represents one of the closest analogies to cuprates yet reported and a singularly promising candidate for high-Tc superconductivity if appropriately doped.

20 pages, 4 figures

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Cited by in corpus (99)

• Electronic structure of the parent compound of superconducting infinite-layer nickelates
• Superconductivity in a quintuple-layer square-planar nickelate
• A superconducting praseodymium nickelate with infinite layer structure
• Self-doped Mott insulator for parent compounds of nickelate superconductors
• Superconductivity in infinite-layer nickelate La${}_{1-x}$Ca${}_x$NiO${}_2$ thin films
• Similarities and differences between infinite-layer nickelates and cuprates and implications for superconductivity
• Model construction and a possibility of cuprate-like pairing in a new d9 nickelate superconductor (Nd,Sr)NiO2
• Electronic correlations and superconducting instability in La${}_3$Ni${}_2$O${}_7$ under high pressure
• Long range antiferromagnetic order in a rocksalt high entropy oxide
• Phase Diagram of Infinite Layer Praseodymium Nickelate Pr${}_{1-x}$Sr${}_x$NiO${}_2$ Thin Films
• Aspects of the Synthesis of Thin Film Superconducting Infinite-Layer Nickelates
• Absence of superconductivity in bulk Nd${}_{1-x}$Sr${}_x$NiO${}_2$
• Many-body Electronic Structure of NdNiO${}_2$ and CaCuO${}_2$
• A substantial hybridization between correlated Ni-d orbital and itinerant electrons in infinite-layer nickelates
• Superconductivity in infinite-layer nickelates
• Intertwined density waves in a metallic nickelate
• Induced magnetic two-dimensionality by hole doping in the superconducting infinite-layer nickelate Nd${}_{1-x}$Sr${}_x$NiO${}_2$
• Two-band model for magnetism and superconductivity in nickelates
• Orbital and Spin Character of Doped Carriers in Infinite-Layer Nickelates
• Type II $t-J$ model in superconducting nickelate Nd${}_{1-x}$Sr${}_x$NiO${}_2$
• Distinct pairing symmetries of superconductivity in infinite-layer nickelates
• Topotactic transformation of single-crystals: from perovskite to infinite-layer nickelates
• Observation of perfect diamagnetism and interfacial effect on the electronic structures in Nd0.8Sr0.2NiO2 superconducting infinite layers
• High oxygen pressure floating zone growth and crystal structure of the layered nickelates R${}_4$Ni${}_3$O${}_{10}$ (R=La, Pr)
• Epitaxial growth and electronic structure of Ruddlesden-Popper nickelates (${\mathrm{La}}_{n+1}{\mathrm{Ni}}_n{\mathrm{O}}_{3n+1},n=1-5$)
• Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
• Strong Superexchange in a $d^{9-\delta }$ Nickelate Revealed by Resonant Inelastic X-Ray Scattering
• Superconductivity in nickel based 112 systems
• Spin stripe order in a square planar trilayer nickelate
• Superconductivity in trilayer nickelate La4Ni3O10 under pressure
• Fluctuation-frustrated flat band instabilities in NdNiO2
• Electronic structure and magnetism in infinite-layer nickelates RNiO${}_2$ (R= La-Lu)
• Nickelate superconductors: an ongoing dialog between theory and experiments
• Electron doped layered nickelates: spanning the phase diagram of the cuprates
• Impact of Cation Stoichiometry on the Crystalline Structure and Superconductivity in Nickelates
• Non-Fermi Liquid and Hund Correlation in La${}_4$Ni${}_3$O${}_{10}$ under High Pressure
• Comparative Many-Body Study of Pr${}_4$Ni${}_3$O${}_8$ and NdNiO${}_2$
• Superconductivity in Infinite-layer Nickelates : Role of Non-zero f-ness
• Stability and electronic properties of the LaNiO${}_2$/SrTiO${}_3$ interface
• Theoretical investigation of superconductivity in trilayer square-planar nickelates
• Bulk superconductivity up to 96 K in pressurized nickelate single crystals
• Electronic structure and magnetic tendencies of trilayer La${}_4$Ni${}_3$O${}_{10}$ under pressure: structural transition, molecular orbitals, and layer differentiation
• Design and synthesis of three-dimensional hybrid Ruddlesden-Popper nickelate single crystals
• Effects of Sr-doping on the electronic and spin-state properties of infinite-layer nickelates
• Review on quasi-2D square planar nickelates
• Electronic structure and magnetic properties of higher-order layered nickelates: La${}_{n+1}$Ni${}_n$O${}_{2n+2}$ ($n=4-6$)
• Infinite-layer nickelate superconductors: A current experimental perspective of the crystal and electronic structures
• Experimental Progress on the Emergent Infinite-Layer Ni-Based Superconductors
• A superlattice approach to doping infinite-layer nickelates
• Short-range magnetic interactions and spin-glass behavior in the quasi-2D nickelate Pr4Ni3O8
• Low Valence Nickelates: Launching the Nickel Age of Superconductivity
• Synthesis and electronic properties of Nd${}_{n+1}$Ni${}_n$O${}_{3n+1}$ Ruddlesden-Popper nickelate thin films
• Soft X-ray Spectroscopy of Low-Valence Nickelates
• Self-doping and the Mott-Kondo scenario for infinite-layer nickelate superconductors
• Limits to the strain engineering of layered square-planar nickelate thin films
• Structural and physical properties of trilayer nickelates $R_4$Ni${}_3$O${}_{10}$ ($R=$ La, Pr and Nd)
• A Nickelate Renaissance
• Assessing the formation of spin and charge stripes in La${}_3$Ni${}_2$O${}_7$ from first-principles
• Anisotropic character of the metal-to-metal transition in Pr4Ni${}_3$O${}_{10}$
• Digital modulation of the nickel valence state in a cuprate-nickelate heterostructure
• Synthesis and physical properties of perovskite Sm${}_{1-x}$Sr${}_x$NiO${}_3$ (x = 0, 0.2) and infinite-layer Sm${}_{0.8}$Sr${}_{0.2}$NiO${}_2$ nickelates
• Contrasting physical properties of the trilayer nickelates Nd${}_4$Ni${}_3$O${}_{10}$ and Nd${}_4$Ni${}_3$O${}_8$
• High-pressure crystal growth and investigation of the metal-to-metal transition of Ruddlesden-Popper trilayer nickelates La${}_4$Ni${}_3$O${}_{10}$
• Role of Oxygen States in the Low Valence Nickelate La${}_4$Ni${}_3$O${}_8$
• Epitaxial growth of Ruddlesden-Popper neodymium nickelates Nd${}_{n+1}$Ni${}_n$O${}_{3n+1}$ ($n$ = 1-5)
• Is La3Ni2O6.5 a Bulk Superconducting Nickelate?
• High pO2 Floating Zone Crystal Growth of the Perovskite Nickelate PrNiO3
• Emergent flat-band physics in $d^{9-\delta }$ multilayer nickelates
• Many-body electronic structure of $d^{9-\delta }$ layered nickelates
• Charge Condensation and Lattice Coupling Drives Stripe Formation in Nickelates
• Layered palladates and their relation to nickelates and cuprates
• Phase formation in hole- and electron-doped rare-earth nickelate single crystals
• Charge-stripe Fluctuations in Nd${}_4$Ni${}_3$O${}_8$ as Evidenced by Optical Spectroscopy
• Synthesis and Properties of La${}_{1-x}$Sr${}_x$NiO${}_3$ and La${}_{1-x}$Sr${}_x$NiO${}_2$
• Growth and characterization of the La${}_3$Ni${}_2$O${}_{7-\delta }$ thin films: dominant contribution of the $d_{x^2-y^2}$ orbital at ambient pressure
• Proposed ordering of textured spin singlets in a bulk infinite layer nickelate
• Orbital Symmetry and Orbital Excitations in High-$T_c$ Superconductors
• Single-layer T'-type nickelates: Ni${}^{1+}$ is Ni${}^{1+}$
• Signature of superconductivity in pressurized La4Ni3O10-x single crystals grown at ambient pressure
• Electronic character of charge order in square planar low valence nickelates
• Tuning multiple Landau Quantization in Transition-Metal Dichalcogenide with Strain
• Electron-phonon mediated superconductivity in La${}_6$Ni${}_5$O${}_{12}$ nickel oxides
• Orbital polarization, charge transfer, and fluorescence in reduced valence nickelates
• Hund bands in spectra of multiorbital systems
• Electronic transport through correlated electron systems with nonhomogeneous charge orderings
• Lattice-charge coupling in a trilayer nickelate with intertwined density wave order
• Violation of Luttinger's theorem in the simplest doped Mott insulator: Falicov-Kimball model in strong correlation limit
• Giant orbital polarization of Ni${}^{2+}$ in square planar environment
• Resonant inelastic x-ray scattering data for Ruddlesden-Popper and reduced Ruddlesden-Popper nickelates
• Coherent epitaxy of trilayer nickelate (Nd0.8Sr0.2)4Ni3O10 films by high-pressure magnetron sputtering
• Competing spin-glass and spin-fluctuation states in NdxPr4-xNi3O8
• Magnetic excitations in Nd${}_{n+1}$Ni${}_n$O${}_{3n+1}$ Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering
• Absence of mixed valency for Pr in pristine and hole-doped PrNiO${}_2$
• Decoupling between $d_{x^2-y^2}$ and $d_{z^2}$ orbitals in hole doped La${}_3$Ni${}_2$O${}_7$
• Heteroanionic Stabilization of Ni${}^{1+}$ with Nonplanar Coordination in Layered Nickelates
• Superconducting phase diagram of multi-layer square-planar nickelates
• High-Resolution Capacitance Dilatometry of Microscopically Thin Samples Using a Miniature Dilatometer
• Observation of correlated plasmons in low-valence nickelates
• $L{a}_{3}P{d}_{2}Na{O}_9$: A High-Valent Insulating Palladate