Superconductivity in a quintuple-layer square-planar nickelate

Abstract

Since the discovery of high-temperature superconductivity in the copper oxide materials, there have been sustained efforts to both understand the origins of this phase and discover new cuprate-like superconducting materials. One prime materials platform has been the rare-earth nickelates and indeed superconductivity was recently discovered in the doped compound Nd${}_{0.8}$Sr${}_{0.2}$NiO${}_2$. Undoped NdNiO${}_2$ belongs to a series of layered square-planar nickelates with chemical formula Nd${}_{n+1}$Ni${}_n$O${}_{2n+2}$ and is known as the 'infinite-layer' ($n=\infty$) nickelate. Here, we report the synthesis of the quintuple-layer ($n=5$) member of this series, Nd${}_6$Ni${}_5$O${}_{12}$, in which optimal cuprate-like electron filling ($d^{8.8}$) is achieved without chemical doping. We observe a superconducting transition beginning at $\sim$13 K. Electronic structure calculations, in tandem with magnetoresistive and spectroscopic measurements, suggest that Nd${}_6$Ni${}_5$O${}_{12}$ interpolates between cuprate-like and infinite-layer nickelate-like behavior. In engineering a distinct superconducting nickelate, we identify the square-planar nickelates as a new family of superconductors which can be tuned via both doping and dimensionality.

21 pages, 4 figures

References in corpus (8)

• Orbital order and possible superconductivity in LaNiO3/LaMO3 superlattices
• A superconducting praseodymium nickelate with infinite layer structure
• Nickelate superconductivity without rare-earth magnetism: (La,Sr)NiO${}_2$
• Synthesis and characterization of bulk Nd1-xSrxNiO2 and Nd1-xSrxNiO3
• Isotropic Pauli-Limited Superconductivity in the Infinite Layer Nickelate Nd${}_{0.775}$Sr${}_{0.225}$NiO${}_2$
• Impact of Cation Stoichiometry on the Crystalline Structure and Superconductivity in Nickelates
• 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${}_{2n+2}$ ($n=4-6$)

Cited by in corpus (36)

• Superconductivity near 80 Kelvin in single crystals of La3Ni2O7 under pressure
• Superconductivity in pressurized trilayer La${}_4$Ni${}_3$O${}_{10-\delta }$ single crystals
• Visualization of Oxygen Vacancies and Self-doped Ligand Holes in La3Ni2O7-δ
• Evidence for charge and spin order in single crystals of La${}_3$Ni${}_2$O${}_7$ and La${}_3$Ni${}_2$O${}_6$
• Character of the "normal state" of the nickelate superconductors
• Superconductivity in infinite-layer nickelates
• Pressure-induced monotonic enhancement of Tc to over 30 K in the superconducting Pr0.82Sr0.18NiO2 thin films
• Electronic correlations and partial gap in the bilayer nickelate La${}_3$Ni${}_2$O${}_7$
• Intrinsic magnetism in superconducting infinite-layer nickelates
• Superconducting Instabilities in Strongly-Correlated Infinite-Layer Nickelates
• Reconstructing the polar interface of infinite-layer nickelate thin films
• Evidence for quasi-two-dimensional superconductivity in infinite-layer nickelates
• Optimizing superconductivity: from cuprates via nickelates to palladates
• Correlations turn electronic structure of finite-layer nickelates upside down
• Low Valence Nickelates: Launching the Nickel Age of Superconductivity
• Strain-induced enhancement of $T_c$ in infinite-layer Pr${}_{0.8}$Sr${}_{0.2}$NiO${}_2$ films
• Synthesis and physical properties of LaNiO${}_2$ crystals
• Synthesis of infinite-layer nickelates and influence of the capping-layer on magnetotransport
• Two-gap superconductivity and decisive role of rare-earth $d$ electrons in infinite-layer nickelates
• Geometric effects in the infinite-layer nickelates
• Role of Oxygen States in the Low Valence Nickelate La${}_4$Ni${}_3$O${}_8$
• Microscopic Theory of Superconducting Phase Diagram in Infinite-Layer Nickelates
• Correlated electronic structure of a quintuple-layer nickelate
• Strongly correlated superconductivity with long-range spatial fluctuations
• Topotactic-hydrogen forms chains in $AB$O${}_2$ nickelate superconductors
• Many-body electronic structure of $d^{9-\delta }$ layered nickelates
• Signatures of topotactic hydrogen in nickelate superconductors
• Synthesis and Properties of La${}_{1-x}$Sr${}_x$NiO${}_3$ and La${}_{1-x}$Sr${}_x$NiO${}_2$
• Atomic-scale mapping and quantification of local Ruddlesden-Popper phase variations
• Distinct electridelike nature of infinite-layer nickelates and the resulting theoretical challenges to calculate their electronic structure
• Charge ordering as the driving mechanism for superconductivity in rare-earth nickel oxides
• Electronic band structure of a superconducting nickelate probed by the Seebeck coefficient in the disordered limit
• Unusual Hole-doping-dependent Electronic Instability and Electron-Phonon Coupling in Infinite-layer Nickelates
• $GW$+EDMFT investigation of Pr${}_{1-x}$Sr${}_x$NiO${}_2$ under pressure
• Possible routes to superconductivity in the surface layers of V-doped Mg${}_{1-\delta }$Ti${}_2$O${}_4$ through multiple charge transfers and suppression of Jahn-Teller activity
• $\text{Ab initio}$ Materials Design of Superconductivity in $d^9$ Nickelates