Reducing the strain required for ambient-pressure superconductivity in bilayer nickelates

Abstract

The remarkable discovery of high temperature superconductivity in bulk bilayer nickelates under high pressure has prompted the conjecture that epitaxial compressive strain might mimic essential aspects of hydrostatic pressure. The successful realization of superconductivity in films on SrLaAlO4 (001) (SLAO) supports this correspondence, yet it remains unclear whether the rich pressure-temperature phase diagram of bilayer nickelates can be systematically mapped (and studied at ambient pressure) as a function of epitaxial strain. To this end, experimental access near the elusive edge of the superconducting phase boundary would provide invaluable insight into the nature of the superconducting state and the ground state from which it emerges. It would also offer a benchmark for theoretical models. Here we report superconducting bilayer nickelates grown on LaAlO3 (001) (LAO), where the compressive strain required for ambient-pressure superconductivity is nearly halved to -1.2%. These films exhibit a superconducting onset above 10 K and reach zero resistance at 3 K, with normal-state transport properties differing from those of films grown on SLAO. Our results offer a new opportunity to probe emergent phenomena near the superconducting phase boundary in the strain-temperature phase diagram of bilayer nickelates.

arXiv comment16 pages, 4 figures, 1 table, 42 references, 6 supplementary figures, 1 supplementary table

References in corpus (24)

• Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor
• Quantum Criticality
• Universality of the Mott-Ioffe-Regel limit in metals
• Heat Transport in a Strongly Overdoped Cuprate: Fermi Liquid and Pure d-wave BCS Superconductor
• Interlayer Coupling Driven High-Temperature Superconductivity in La${}_3$Ni${}_2$O${}_7$ Under Pressure
• Origins of bad metal conductivity and the insulator-metal transition in the rare-earth nickelates
• Bilayer $t$-$J$-$J_{\perp }$ Model and Magnetically Mediated Pairing in the Pressurized Nickelate La${}_3$Ni${}_2$O${}_7$
• Electronic structure, dimer physics, orbital-selective behavior, and magnetic tendencies in the bilayer nickelate superconductor La${}_3$Ni${}_2$O${}_7$ under pressure
• Pressure-induced superconductivity in polycrystalline La3Ni2O7
• Tuning bad metal and non-Fermi liquid behavior in a Mott material: rare earth nickelate thin films
• Superconductivity in nickelate and cuprate superconductors with strong bilayer coupling
• Identification of the superconductivity in bilayer nickelate La${}_3$Ni${}_2$O${}_7$ upon 100 GPa
• Angle-resolved photoemission spectroscopy of superconducting (La,Pr)3Ni2O7/SrLaAlO4 heterostructures
• Dirty Superconductivity in the Electron-Doped Cuprate PCCO: a Tunneling Study
• Iron-based superconductivity extended to the novel silicide LaFeSiH
• A stability bound on the $T$-linear resistivity of conventional metals
• Superconductivity and Electronic Structures of Nickelate Thin Film Superstructures
• Superconducting gap structure and bosonic mode in La2PrNi2O7 thin films at ambient pressure
• Multi-band description of the upper critical field of bulk FeSe
• Nodeless superconducting gap and electron-boson coupling in (La,Pr,Sm)${}_3$Ni${}_2$O${}_7$ films
• Electronic structure of compressively strained thin film La${}_2$PrNi${}_2$O${}_7$
• Resolving Structural Origins for Superconductivity in Strain-Engineered La${}_3$Ni${}_2$O${}_7$ Thin Films
• Fermi-liquid transport beyond the upper critical field in superconducting La${}_2$PrNi${}_2$O${}_7$ thin films
• Electronic structures across superconductor-insulator transition in Ruddlesden-Popper bilayer nickelate films

Cited by in corpus (4)

• Weakly anisotropic superconductivity of Pr4Ni3O10 single crystals
• Compressive Strain Turns $s^{\pm }$ into $d$-Wave Pairing in One-unit-cell La${}_3$Ni${}_2$O${}_7$ Thin Film Via Substrate-Induced Hole Doping
• Pauli-limited upper critical field and anisotropic depairing effect of La2.82Sr0.18Ni2O7 superconducting thin film
• Superconducting weak links at substrate steps in bilayer nickelate films