Universal spin-glass behaviour in bulk LaNiO2, PrNiO2 and NdNiO2. (13th January 2022)

• Record Type: Journal Article
• Authors: Lin, Hai; Gawryluk, Dariusz Jakub; Klein, Yannick Maximilian; Huangfu, Shangxiong; Pomjakushina, Ekaterina; von Rohr, Fabian; Schilling, Andreas
• Is Part Of: New journal of physics. Volume 24:Number 1(2022)
• Publication Date: 2022-01-13
• Subjects: spin glass -- nickelate -- magnetism -- superconductivity; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/ac465e
• Languages: English
• ISSNs: 1367-2630

Abstract

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 R NiO2 ( 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 d 9 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.