Similarities and differences between infinite-layer nickelates and cuprates and implications for superconductivity

2019/08/31 by Antia S. Botana, Michael R. Norman · 5 citations
Physics and Astronomy · #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevx.10.011024

published as Phys. Rev. X 10, 011024 (2020)

arxiv created 2020/02/04 · arxiv updated 2020/02/05

Abstract

We have revisited the electronic structure of infinite-layer RNiO₂ (R= La, Nd) in light of the recent discovery of superconductivity in Sr-doped NdNiO₂. From a comparison to their cuprate counterpart CaCuO₂, we derive essential facts related to their electronic structures, in particular the values for various hopping parameters and energy splittings, and the influence of the spacer cation. From this detailed comparison, we comment on expectations in regards to superconductivity. In particular, both materials exhibit a large ratio of longer-range hopping to near-neighbor hopping which should be conducive for superconductivity.

Cited by

• Emergent quantum phenomena via phase-coherence engineering in infinite-layer nickelate superconductors
• Ni-O hybridization-driven electronic reconstruction across the superconducting dome in an infinite-layer nickelate
• General trends of electronic structures, superconducting pairing, and magnetic correlations in the Ruddlesden-Popper nickelate m-layered superconductors La_m+1Ni_mO_3m+1
• Magnetism-Enhanced Strong Electron-Phonon Coupling in Infinite-Layer Nickelate
• Strong-coupling study of the pairing mechanism in pressurized La₃Ni₂O₇

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