Recent progress in nickelate superconductors

Abstract

The discovery of superconductivity in nickelate compounds has opened new avenues in the study of high-temperature superconductors. Here we provide a comprehensive overview of recent progress in the field, including all different nickelate systems, reduced-Ruddlesden-Popper-type infinite layer LaNiO${}_2$, Ruddlesden-Popper-type bilayer La${}_3$Ni${}_2$O${}_7$ and trilayer La${}_4$Ni${}_3$O${}_{10}$. We begin by introducing the superconducting properties of the hole-doped LaNiO${}_2$ system, which marked the starting point for nickelate superconductivity. We then turn to the bilayer La${}_3$Ni${}_2$O${}_7$ system, discussing both its high-pressure and thin-film superconducting phases. This is followed by an examination of the trilayer La${}_4$Ni${}_3$O${}_{10}$ system and other related multilayer nickelates. Throughout the review, we highlight emerging trends, key challenges, and open questions. We conclude by addressing current limitations in materials synthesis and characterization, and future directions that may help uncover the mechanisms driving superconductivity in these complex oxide systems.

18 pages, 11 figures

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• The electronic and magnetic structures of bilayer La${}_3$Ni${}_2$O${}_7$ at ambient pressure
• Cuprate-like Electronic Structures in Infinite-Layer Nickelates with Substantial Hole Dopings
• Low-energy electrodynamics of infinite-layer nickelates: evidence for d-wave superconductivity in the dirty limit
• Theory of Pressure Dependence of Superconductivity in Bilayer Nickelate La${}_3$Ni${}_2$O${}_7$
• Electronic Structure of Superconducting Infinite-Layer Lanthanum Nickelates
• Ultrafast Dynamics of Bilayer and Trilayer Nickelate Superconductors
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• Disorder-induced suppression of superconductivity in infinite-layer nickelates
• Self-doped Molecular Mott Insulator for Bilayer High-Temperature Superconducting La3Ni2O7

Cited by in corpus (7)

• Bulk superconductivity up to 96 K in pressurized nickelate single crystals
• Superconductivity and Electronic Structures of Nickelate Thin Film Superstructures
• Damage of bilayer structure in La3Ni2O7-d induced by high pO2 annealing
• Electronic layer decoupling driven by density-wave order in La${}_4$Ni${}_3$O${}_{10}$
• Progress of ambient-pressure superconductivity in bilayer nickelate thin films
• Spin Fluctuations in the Rare-Earth Doped Bilayer Nickelates
• Raman response in superconducting multiorbital systems with application to nickelates