The critical nature of the Ni spin state in doped NdNiO${}_2$

Abstract

Superconductivity with $T_c\approx 15K$ was recently found in doped NdNiO${}_2$. The Ni${}^{1+}$O${}_2$ layers are expected to be Mott insulators so hole doping should produce Ni${}^{2+}$ with $S=1$, incompatible with robust superconductivity. We show that the NiO${}_2$ layers fall inside a ``critical'' region where the large $pd$ hybridization favors a singlet ${}^1{A}_1$ hole-doped state like in CuO${}_2$. However, we find that the superexchange is about one order smaller than in cuprates, thus a magnon ``glue'' is very unlikely and another mechanism needs to be found.

5 pages, 4 figures (to appear in PRL)

References in corpus (27)

• Electronic structure of the parent compound of superconducting infinite-layer nickelates
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• Formation of 2D single-component correlated electron system and band engineering in the nickelate superconductor NdNiO2
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• Role of $4f$ states in infinite-layer NdNiO${}_2$
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• Induced magnetic two-dimensionality by hole doping in the superconducting infinite-layer nickelate Nd${}_{1-x}$Sr${}_x$NiO${}_2$
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• Type II $t-J$ model in superconducting nickelate Nd${}_{1-x}$Sr${}_x$NiO${}_2$
• High-spin polaron in lightly doped CuO${}_2$ planes
• Materials design of dynamically stable $d^9$ layered nickelates
• Effective Hamiltonian for superconducting Ni oxides Nd${}_{1-x}$Sr${}_x$NiO${}_2$
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• Hole superconductivity in infinite-layer nickelates
• Absence of Superconductivity in Nd${}_{0.8}$Sr${}_{0.2}$NiO${}_x$ Thin Films without Chemical Reduction
• Magnetic penetration depth and $T_c$ in superconducting nickelates
• Differences in the quasiparticle dynamics for one-band and three-band cuprate models
• Core-level x-ray photoemission and Raman spectroscopy studies on electronic structures in Mott-Hubbard type nickelate oxide NdNiO${}_2$
• Relevance of Cu-3d multiplet structure in models of high Tc cuprates
• Classifying superconductivity in an infinite-layer nickelate Nd${}_{0.8}$Sr${}_{0.2}$NiO${}_2$

Cited by in corpus (146)

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• Phase diagram and superconducting dome of infinite-layer $\mathrm{N}{\mathrm{d}}_{1-\mathrm{x}}\mathrm{S}{\mathrm{r}}_{\mathrm{x}}\mathrm{Ni}{\mathrm{O}}_2$ thin films
• A superconducting praseodymium nickelate with infinite layer structure
• Bilayer two-orbital model of La${}_3$Ni${}_2$O${}_7$ under pressure
• Superconductivity in infinite-layer nickelate La${}_{1-x}$Ca${}_x$NiO${}_2$ thin films
• Electronic correlations and superconducting instability in La${}_3$Ni${}_2$O${}_7$ under high pressure
• Nickelate superconductors -- a renaissance of the one-band Hubbard model
• Doping evolution of the Mott-Hubbard landscape in infinite-layer nickelates
• Two superconducting components with different symmetries in Nd1-xSrxNiO2 films
• Effective bi-layer model Hamiltonian and density-matrix renormalization group study for the high-Tc superconductivity in La${}_3$Ni${}_2$O${}_7$ under high pressure
• Electronic structure, dimer physics, orbital-selective behavior, and magnetic tendencies in the bilayer nickelate superconductor La${}_3$Ni${}_2$O${}_7$ under pressure
• Structural phase transition, $s_{\pm }$-wave pairing and magnetic stripe order in the bilayered nickelate superconductor La${}_3$Ni${}_2$O${}_7$ under pressure
• Superconductivity in infinite-layer nickelates
• Pressure-induced monotonic enhancement of Tc to over 30 K in the superconducting Pr0.82Sr0.18NiO2 thin films
• Electronic structure of rare-earth infinite-layer ReNiO2 (Re=La, Nd)
• Hund's metal physics: from SrNiO${}_2$ to NdNiO${}_2$
• 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
• Charge and spin order dichotomy in NdNiO${}_2$ driven by SrTiO${}_3$ capping layer
• Intrinsic magnetism in superconducting infinite-layer nickelates
• Orbital Selective Superconductivity in a Two-band Model of Infinite-Layer Nickelates
• Orbital and Spin Character of Doped Carriers in Infinite-Layer Nickelates
• Multiorbital processes rule the Nd${}_{1-x}$Sr${}_x$NiO${}_2$ normal state
• Lifshitz transition and frustration of magnetic moments in infinite-layer NdNiO${}_2$ upon hole-doping
• Electronic Structure Trends Across the Rare-Earth Series in Superconducting Infinite Layer Nickelates
• Isotropic Pauli-Limited Superconductivity in the Infinite Layer Nickelate Nd${}_{0.775}$Sr${}_{0.225}$NiO${}_2$
• Distinct pairing symmetries of superconductivity in infinite-layer nickelates
• Structural transitions, octahedral rotations, and electronic properties of $A_3$Ni${}_2$O${}_7$ rare-earth nickelates under high pressure
• Observation of perfect diamagnetism and interfacial effect on the electronic structures in Nd0.8Sr0.2NiO2 superconducting infinite layers
• Fundamental difference in the electronic reconstruction of infinite-layer vs. perovskite neodymium nickelate films on SrTiO${}_3$(001)
• Normal state of Nd${}_{1-x}$Sr${}_x$NiO${}_2$ from self-consistent $GW$+EDMFT
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• Calculated Exchange Interactions and Sensitivity of Ni Two-Hole Spin State to Hund's Coupling in Doped NdNiO2
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• Similarities and differences between nickelate and cuprate films grown on a SrTiO${}_3$ substrate
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• $f$-electron and magnetic ordering effects in nickelates LaNiO${}_2$ and NdNiO${}_2$: remarkable role of the cuprate-like $3d_{x^2-y^2}$ band
• Superconducting Instabilities in Strongly-Correlated Infinite-Layer Nickelates
• Fluctuation-frustrated flat band instabilities in NdNiO2
• Phase diagram of nickelate superconductors calculated by dynamical vertex approximation
• Magnetic correlations in infinite-layer nickelates: an experimental and theoretical multi-method study
• NMR Evidence of Antiferromagnetic Spin Fluctuations in Nd${}_{0.85}$Sr${}_{0.15}$NiO${}_2$
• Electronic structure and magnetism in infinite-layer nickelates RNiO${}_2$ (R= La-Lu)
• Absence of $3a_0$ Charge Density Wave Order in the Infinite Layer Nickelates
• Dynamical Mean Field Studies of Infinite Layer Nickelates: Physics Results and Methodological Implications
• Nickelate superconductors: an ongoing dialog between theory and experiments
• Preparation of superconducting thin films of infinite-layer nickelate Nd${}_{0.8}$Sr${}_{0.2}$NiO${}_2$
• The dawn of the nickel age of superconductivity
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• Electronic structure of superconducting nickelates probed by resonant photoemission spectroscopy
• Doping-dependent character and possible magnetic ordering of NdNiO${}_2$
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• Cuprate-like Electronic Structures in Infinite-Layer Nickelates with Substantial Hole Dopings
• Trilayer multi-orbital models of $\mathrm{L}{\mathrm{a}}_4\mathrm{N}{\mathrm{i}}_3{\mathrm{O}}_{10}$
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• A superlattice approach to doping infinite-layer nickelates
• Experimental Progress on the Emergent Infinite-Layer Ni-Based Superconductors
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• Soft X-ray Spectroscopy of Low-Valence Nickelates
• Recent progress in nickelate superconductors
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