Theoretical investigation of superconductivity in trilayer square-planar nickelates

Abstract

The discovery of superconductivity in Sr-doped NdNiO${}_2$ is a crucial breakthrough in the long pursuit for nickel oxide materials with electronic and magnetic properties similar to those of the cuprates. NdNiO${}_2$ is the infinite-layer member of a family of square-planar nickelates with general chemical formula R${}_{n+1}$Ni${}_n$O${}_{2n+2}$ (R = La, Pr, Nd, $n=2,3,...\infty$). In this letter, we investigate superconductivity in the trilayer member of this series (R${}_4$Ni${}_3$O${}_8$) using a combination of first-principles and $t-J$ model calculations. R${}_4$Ni${}_3$O${}_8$ compounds resemble cuprates more than RNiO${}_2$ materials in that only Ni-$d_{x^2-y^2}$ bands cross the Fermi level, they exhibit a largely reduced charge transfer energy, and as a consequence superexchange interactions are significantly enhanced. We find that the superconducting instability in doped R${}_4$Ni${}_3$O${}_8$ compounds is considerably stronger with a maximum gap about four times larger than that in Sr${}_{0.2}$Nd${}_{0.8}$NiO${}_2$.

16 pages, 7 figures

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Cited by in corpus (29)

• Superconductivity near 80 Kelvin in single crystals of La3Ni2O7 under pressure
• Superconductivity in a quintuple-layer square-planar nickelate
• Superconductivity in pressurized trilayer La${}_4$Ni${}_3$O${}_{10-\delta }$ single crystals
• Superconductivity in infinite-layer nickelates
• Multiorbital processes rule the Nd${}_{1-x}$Sr${}_x$NiO${}_2$ normal state
• Strong Superexchange in a $d^{9-\delta }$ Nickelate Revealed by Resonant Inelastic X-Ray Scattering
• Calculated Exchange Interactions and Sensitivity of Ni Two-Hole Spin State to Hund's Coupling in Doped NdNiO2
• Superconductivity in nickel based 112 systems
• Preparation of superconducting thin films of infinite-layer nickelate Nd${}_{0.8}$Sr${}_{0.2}$NiO${}_2$
• Comparative Many-Body Study of Pr${}_4$Ni${}_3$O${}_8$ and NdNiO${}_2$
• Magnetic exchange coupling in cuprate-analog $d^9$ nickelates
• 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
• Low Valence Nickelates: Launching the Nickel Age of Superconductivity
• Soft X-ray Spectroscopy of Low-Valence Nickelates
• Limits to the strain engineering of layered square-planar nickelate thin films
• Contrasting physical properties of the trilayer nickelates Nd${}_4$Ni${}_3$O${}_{10}$ and Nd${}_4$Ni${}_3$O${}_8$
• Negligible oxygen vacancies, low critical current density, electric-field modulation, in-plane anisotropic and high-field transport of a superconducting Nd0.8Sr0.2NiO2/SrTiO3 heterostructure
• 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
• Epitaxial growth of Ruddlesden-Popper neodymium nickelates Nd${}_{n+1}$Ni${}_n$O${}_{3n+1}$ ($n$ = 1-5)
• Emergent flat-band physics in $d^{9-\delta }$ multilayer nickelates
• Screening in a two-band model for superconducting infinite-layer nickelate
• Many-body electronic structure of $d^{9-\delta }$ layered nickelates
• Single-layer T'-type nickelates: Ni${}^{1+}$ is Ni${}^{1+}$
• Electronic character of charge order in square planar low valence nickelates
• Proposal to improve Ni-based superconductors via enhanced charge transfer
• Observation of correlated plasmons in low-valence nickelates