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Universal spin-glass behaviour in bulk LaNiO2 , PrNiO2 and NdNiO2

Published inNew journal of physics, vol. 24, no. 1, 013022
Publication date2022-01-13
First online date2022-01-13
Abstract

Motivated by the recent discovery of superconductivity in infinite-layer nickelate thin films, we report on a synthesis and magnetization study on bulk samples of the parent compounds RNiO2 (R = La, Pr, Nd). The frequency-dependent peaks of the alternating current magnetic susceptibility, along with remarkable memory effects, characterize spin-glass states. Furthermore, various phenomenological parameters via different spin glass models show strong similarity within these three compounds as well as with other rare-earth metal nickelates. The universal spin-glass behaviour distinguishes the nickelates from the parent compound CaCuO2 of cuprate superconductors, which has the same crystal structure and d9 electronic configuration but undergoes a long-range antiferromagnetic order. Our investigations may indicate a distinctly different nature of magnetism and superconductivity in the bulk nickelates than in the cuprates.

eng
Keywords
  • Spin glass
  • Nickelate
  • Magnetism
  • Superconductivity
Affiliation Not a UNIGE publication
Research group
Citation (ISO format)
LIN, Hai et al. Universal spin-glass behaviour in bulk LaNiO<sub>2</sub> , PrNiO<sub>2</sub> and NdNiO<sub>2</sub>. In: New journal of physics, 2022, vol. 24, n° 1, p. 013022. doi: 10.1088/1367-2630/ac465e
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ISSN of the journal1367-2630
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Creation07/11/2022 1:49:00 PM
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