Core-level x-ray photoemission and Raman spectroscopy studies on electronic structures in Mott-Hubbard type nickelate oxide NdNiO${}_2$

Abstract

We perform core-level X-ray photoemission spectroscopy (XPS) and electronic Raman scattering studies of electronic structures and spin fluctuations in the bulk samples of the nickelate oxide NdNiO${}_2$. According to Nd $3d$ and O $1s$ XPS spectra, we conclude that NdNiO${}_2$ has a large transfer energy. From the analysis of the main line of the Ni $2p_{3/2}$ XPS, we confirm the NiO${}_2$ planes in NdNiO${}_2$ are of Mott-Hubbard type in the Zaanen-Sawatzky-Allen scheme. The two-magnon peak in the Raman scattering provides direct evidence for the strong spin-fluctuation in NdNiO${}_2$. The peak position determines the antiferromagnetic exchange $J=25$~meV. Our experimental results agree well with our previous theoretical results.

arXiv comment7 pages, 5 figures

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Cited by in corpus (22)

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• The critical nature of the Ni spin state in doped NdNiO${}_2$
• Hund's metal physics: from SrNiO${}_2$ to NdNiO${}_2$
• Orbital and Spin Character of Doped Carriers in Infinite-Layer Nickelates
• Calculated Exchange Interactions and Sensitivity of Ni Two-Hole Spin State to Hund's Coupling in Doped NdNiO2
• Optical properties of the infinite-layer La${}_{1-x}$Sr${}_x$NiO${}_2$ and hidden Hund's physics
• Universal spin-glass behaviour in bulk LaNiO2, PrNiO2 and NdNiO2
• Polarity induced electronic and atomic reconstruction at NdNiO2/SrTiO3 interfaces
• Intrinsic Spin Susceptibility and Pseudogap-like Behavior in Infinite-Layer LaNiO2
• Electronic structure and magnetic properties of higher-order layered nickelates: La${}_{n+1}$Ni${}_n$O${}_{2n+2}$ ($n=4-6$)
• Low Valence Nickelates: Launching the Nickel Age of Superconductivity
• Self-doping and the Mott-Kondo scenario for infinite-layer nickelate superconductors
• Hund-Heisenberg model in superconducting 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
• Correlated electronic structure of a quintuple-layer nickelate
• Many-body electronic structure of $d^{9-\delta }$ layered nickelates
• Synthesis and Properties of La${}_{1-x}$Sr${}_x$NiO${}_3$ and La${}_{1-x}$Sr${}_x$NiO${}_2$
• Two-orbital model for possible superconductivity pairing mechanism in nickelates
• Possible structural quantum criticality tuned by rare-earth ion substitution in infinite-layer nickelates
• Proposal to improve Ni-based superconductors via enhanced charge transfer
• $\text{Ab initio}$ Materials Design of Superconductivity in $d^9$ Nickelates