Nickelate superconductors $--$ Multiorbital nature and spin freezing

Abstract

Superconductivity with a remarkably high $T_c$ has recently been found in Sr-doped NdNiO${}_2$ thin films. While this system bears strong similarities to the cuprates, some differences, such as a weaker antiferromagnetic exchange coupling and possible high-spin moments on the doped Ni sites have been pointed out. Here, we investigate the effect of Hund coupling and crystal field splitting in a simple model system and argue that a multiorbital description of nickelate superconductors is warranted, especially in the strongly hole-doped regime. We then look at this system from the viewpoint of the spin-freezing theory of unconventional superconductivity, which provides a unified understanding of unconventional superconductivity in a broad range of compounds. Sr${}_{0.2}$Nd${}_{0.8}$NiO${}_2$ falls into a parameter regime influenced by two spin-freezing crossovers, one related to the emergent multi-orbital nature in the strongly doped regime and the other related to the single-band character and square lattice geometry in the weakly doped regime.

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Cited by in corpus (80)

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• Self-doped Mott insulator for parent compounds of nickelate superconductors
• Late transition-metal oxides with infinite-layer structure: Nickelates versus cuprates
• Electronic correlations and superconducting instability in La${}_3$Ni${}_2$O${}_7$ under high pressure
• Correlated electronic structure of La${}_3$Ni${}_2$O${}_7$ under pressure
• Electronic structure, dimer physics, orbital-selective behavior, and magnetic tendencies in the bilayer nickelate superconductor La${}_3$Ni${}_2$O${}_7$ under pressure
• Pressure-induced monotonic enhancement of Tc to over 30 K in the superconducting Pr0.82Sr0.18NiO2 thin films
• Role of $4f$ states in infinite-layer NdNiO${}_2$
• Correlated electronic structure, orbital-selective behavior, and magnetic correlations in double-layer La${}_3$Ni${}_2$O${}_7$ under pressure
• Charge Transfer and Zhang-Rice Singlet Bands in the Nickelate Superconductor $\mathrm{L}{\mathrm{a}}_3\mathrm{N}{\mathrm{i}}_2{\mathrm{O}}_7$ under Pressure
• Intrinsic magnetism in superconducting infinite-layer nickelates
• Multiorbital processes rule the Nd${}_{1-x}$Sr${}_x$NiO${}_2$ normal state
• Materials design of dynamically stable $d^9$ layered nickelates
• Superconductivity in nickel based 112 systems
• Superconducting Instabilities in Strongly-Correlated Infinite-Layer Nickelates
• Phase diagram of nickelate superconductors calculated by dynamical vertex approximation
• Fluctuation-frustrated flat band instabilities in NdNiO2
• Magnetic correlations in infinite-layer nickelates: an experimental and theoretical multi-method study
• Dynamical Mean Field Studies of Infinite Layer Nickelates: Physics Results and Methodological Implications
• Trilayer multi-orbital models of $\mathrm{L}{\mathrm{a}}_4\mathrm{N}{\mathrm{i}}_3{\mathrm{O}}_{10}$
• Cuprate-like Electronic Structures in Infinite-Layer Nickelates with Substantial Hole Dopings
• Optimizing superconductivity: from cuprates via nickelates to palladates
• Altermagnetism and superconductivity in a multiorbital t-J model
• Polarity induced electronic and atomic reconstruction at NdNiO2/SrTiO3 interfaces
• Electronic Structure of Superconducting Infinite-Layer Lanthanum Nickelates
• Correlations turn electronic structure of finite-layer nickelates upside down
• Electronic structure and magnetic properties of higher-order layered nickelates: La${}_{n+1}$Ni${}_n$O${}_{2n+2}$ ($n=4-6$)
• Experimental Progress on the Emergent Infinite-Layer Ni-Based Superconductors
• Low Valence Nickelates: Launching the Nickel Age of Superconductivity
• Superconductivity and Antiferromagnetism in NdNiO${}_2$ and CaCuO${}_2$: A Cluster DMFT Study
• Soft X-ray Spectroscopy of Low-Valence Nickelates
• Electronic structure and magnetic correlations in trilayer nickelate superconductor La${}_4$Ni${}_3$O${}_{10}$ under pressure
• Self-doping and the Mott-Kondo scenario for infinite-layer nickelate superconductors
• Oxygen vacancy induced site-selective mott transition in lanio3
• Negligible oxygen vacancies, low critical current density, electric-field modulation, in-plane anisotropic and high-field transport of a superconducting Nd0.8Sr0.2NiO2/SrTiO3 heterostructure
• An electronic origin of charge order in infinite-layer nickelates
• Role of Oxygen States in the Low Valence Nickelate La${}_4$Ni${}_3$O${}_8$
• Electronic structure of higher-order Ruddlesden-Popper nickelates
• Microscopic Theory of Superconducting Phase Diagram in Infinite-Layer Nickelates
• Correlated electronic structure of a quintuple-layer nickelate
• Topotactic-hydrogen forms chains in $AB$O${}_2$ nickelate superconductors
• Dynamical structural instability and its implication on the physical properties of infinite-layer nickelates
• Spin-density, charge- and bond-disproportionation wave instability in hole-doped infinite-layer $R$NiO${}_2$
• Many-body electronic structure of $d^{9-\delta }$ layered nickelates
• Signatures of topotactic hydrogen in nickelate superconductors
• Quantifying interaction mechanism in infinite layer nickelate superconductors
• Electronic Theory for Scanning Tunneling Microscopy Spectra in Infinite-Layer Nickelate Superconductors
• Charge Density Wave Ordering in NdNiO${}_2$: Effects of Multiorbital Nonlocal Correlations
• Correlation-temperature phase diagram of prototypical infinite layer rare earth nickelates
• Distinct electridelike nature of infinite-layer nickelates and the resulting theoretical challenges to calculate their electronic structure
• Assessing the correlated electronic structure of lanthanum nickelates
• Stabilization of singlet hole-doped state in infinite-layer nickelate superconductors
• Phase-sensitive determination of nodal $\mathbf{d}$-wave order parameter in single-band and multiband superconductors
• Closing in on possible scenarios for infinite-layer nickelates: comparison of dynamical mean-field theory with angular-resolved photoemission spectroscopy
• Charge order and superconductivity in a minimal two-band model for infinite-layer nickelates
• Possible structural quantum criticality tuned by rare-earth ion substitution in infinite-layer nickelates
• $GW$+EDMFT investigation of Pr${}_{1-x}$Sr${}_x$NiO${}_2$ under pressure
• Magnetic phases and electron-phonon coupling in La${}_3$Ni${}_2$O${}_7$ under pressure
• Softening of $dd$ excitation in the resonant inelastic x-ray scattering spectra as a signature of Hund's coupling in nickelates
• The emergence of antiferromagnetic correlations and Kondo-like features in a two-band model for infinite-layer nickelates
• General trends of electronic structures, superconducting pairing, and magnetic correlations in the Ruddlesden-Popper nickelate $m$-layered superconductors La${}_{m+1}$Ni${}_m$O${}_{3m+1}$
• $\text{Ab initio}$ Materials Design of Superconductivity in $d^9$ Nickelates
• Electronic Correlations and Absence of Superconductivity in the Collapsed Phase of LaFe${}_2$As${}_2$
• Topotactical Hydrogen Induced Single-Band $d$-wave Superconductivity in La${}_2$NiO${}_4$
• Electronic correlations and spin-charge-density stripes in double-layer La${}_3$Ni${}_2$O${}_7$
• Superconducting phase diagram of finite-layer nickelates Nd${}_{n+1}$Ni${}_n$O${}_{2n+2}$
• Spin-glass state in nickelate superconductors
• Lattice dynamics of the infinite-layer nickelate LaNiO${}_2$
• Pressure effects on the electronic structure and magnetic properties of infinite-layer nickelates
• Third-order strong-coupling impurity solver for real-frequency DMFT: Accurate spectral functions for antiferromagnetic and photo-doped states
• Quasiparticle approach to the transport in infinite-layer nickelates
• Frequency-Dependent Superconducting States From the Two-Time Linear Response Theory: Application To Sr${}_2$RuO${}_4$
• Orbital-selective spin-triplet superconductivity in infinite-layer LaNiO${}_2$
• Emergence and tunability of Fermi-pocket and electronic instabilities in layered Nickelates
• Intrinsic coherence length anisotropy in nickelate, and some pnictide, and chalcogenide superconductors
• Interplay of orbital-selective Mott criticality and flat-band physics in La${}_3$Ni${}_2$O${}_6$
• Effect of doping on the electronic structure, orbital-dependent renormalizations, and magnetic correlations in bilayer La${}_3$Ni${}_2$O${}_7$
• Layer controlled orbital selective Mott transition in monolayer nickelate
• Local magnetic moment formation and Kondo screening in the presence of Hund exchange: the two-band Hubbard model analysis