Short-range magnetic interactions and spin-glass behavior in the quasi-2D nickelate Pr4Ni3O8

Abstract

The nickelate Pr4Ni3O8 features quasi-two-dimensional layers consisting of three stacked square-planar NiO2 planes, in a similar way to the well-known cuprate superconductors. The mixed-valent nature of Ni and its metallic properties makes it a candidate for potentially unconventional superconductivity. We have synthesized Pr4Ni3O8 by topotactic reduction of Pr4Ni3O10 in 10 percent hydrogen gas, and report on measurements of powder-neutron diffraction, magnetization and muon-spin rotation (uSR). We find that Pr4Ni3O8 shows complicated spin-glass behavior with a distinct magnetic memory effect in the temperature range from 2 to 300 K and a freezing temperature T_s ~ 68 K. Moreover, the analysis of uSR spectra indicates two magnetic processes characterized by remarkably different relaxation rates: a slowly-relaxing signal, resulting from paramagnetic fluctuations of Pr/Ni ions, and a fast-relaxing signal, whose relaxation rate increases substantially below ~ 70 K which can be ascribed to the presence of short-range correlated regions. We conclude that the complex spin-freezing process in Pr4Ni3O8 is governed by these multiple magnetic interactions. It is possible that the complex magnetism in Pr4Ni3O8 is detrimental to the occurrence of superconductivity.

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Cited by in corpus (17)

• Topotactic transformation of single-crystals: from perovskite to infinite-layer nickelates
• Strong Superexchange in a $d^{9-\delta }$ Nickelate Revealed by Resonant Inelastic X-Ray Scattering
• Magnetic correlations in infinite-layer nickelates: an experimental and theoretical multi-method study
• Universal spin-glass behaviour in bulk LaNiO2, PrNiO2 and NdNiO2
• Comparative Many-Body Study of Pr${}_4$Ni${}_3$O${}_8$ and NdNiO${}_2$
• Electronic structure and magnetic properties of higher-order layered nickelates: La${}_{n+1}$Ni${}_n$O${}_{2n+2}$ ($n=4-6$)
• Experimental Progress on the Emergent Infinite-Layer Ni-Based Superconductors
• Review on quasi-2D square planar nickelates
• Soft X-ray Spectroscopy of Low-Valence Nickelates
• Synthesis and physical properties of LaNiO${}_2$ crystals
• Emergent flat-band physics in $d^{9-\delta }$ multilayer nickelates
• Topotactic-hydrogen forms chains in $AB$O${}_2$ nickelate superconductors
• Magnetism in doped infinite-layer NdNiO2 studied by combined density functional theory and dynamical mean-field theory
• Unusual Hole-doping-dependent Electronic Instability and Electron-Phonon Coupling in Infinite-layer Nickelates
• Persistent half-metallic ferromagnetism in a (111)-oriented manganite superlattice
• Competing spin-glass and spin-fluctuation states in NdxPr4-xNi3O8
• Observation of correlated plasmons in low-valence nickelates