Superconductivity near 80 Kelvin in single crystals of La3Ni2O7 under pressure

Abstract

High-transition-temperature (high-T_c) superconductivity in cuprates has been discovered for more than three decades, but the underlying mechanism remains a mystery. Cuprates are the only unconventional superconducting family that host bulk superconductivity with T_cs above the liquid nitrogen boiling temperature at 77 Kelvin. Here we report an observation of superconductivity in single crystals of La3Ni2O7 with a maximum T_c of 80 Kelvin at pressures between 14.0-43.5 gigapascals using high-pressure resistance and mutual inductive magnetic susceptibility measurements. The superconducting phase under high pressure exhibits an orthorhombic structure of Fmmm space group with the 3d_(x^2-y^2 ) and 3d_(z^2 ) orbitals of Ni cations strongly interacting with oxygen 2p orbitals. Our density functional theory calculations suggest the superconductivity emerges coincidently with the metallization of the σ-bonding bands under the Fermi level, consisting of the 3d_(z^2 ) orbitals with the apical oxygens connecting Ni-O bilayers. Thus, our discoveries not only reveal important clues for the high-T_c superconductivity in this Ruddlesden-Popper double-layered perovskite nickelates but also provide a new family of compounds to investigate the high-T_c superconductivity mechanism.

15 pages with extended data

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Cited by in corpus (299)

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• Possible $S_{\pm }$-wave superconductivity in La${}_3$Ni${}_2$O${}_7$
• The s${}^{\pm }$-Wave Pairing and the Destructive Role of Apical-Oxygen Deficiencies in La${}_3$Ni${}_2$O${}_7$ Under Pressure
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• Bilayer $t$-$J$-$J_{\perp }$ Model and Magnetically Mediated Pairing in the Pressurized Nickelate La${}_3$Ni${}_2$O${}_7$
• Effective bi-layer model Hamiltonian and density-matrix renormalization group study for the high-Tc superconductivity in La${}_3$Ni${}_2$O${}_7$ under high pressure
• Electronic structure, dimer physics, orbital-selective behavior, and magnetic tendencies in the bilayer nickelate superconductor La${}_3$Ni${}_2$O${}_7$ under pressure
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• Signature of superconductivity in pressurized La${}_4$Ni${}_3$O${}_{10}$
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• Charge and spin instabilities in superconducting La${}_3$Ni${}_2$O${}_7$
• Effect of Rare-earth Element Substitution in Superconducting R${}_3$Ni${}_2$O${}_7$ Under Pressure
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• Resolving the Electronic Ground State of La3Ni2O7-δ Films
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• DFT+DMFT study of correlated electronic structure in the monolayer-trilayer phase of La${}_3$Ni${}_2$O${}_7$
• Evidence for the Meissner effect in the nickelate superconductor La3Ni2O7-delta single crystal using diamond quantum sensors
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• Superconducting phase diagram of finite-layer nickelates Nd${}_{n+1}$Ni${}_n$O${}_{2n+2}$
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• Distinct orbital contributions to electronic and magnetic structures in La${}_4$Ni${}_3$O${}_{10}$
• Strong-coupling theory of bilayer plasmon excitations
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• Electronic layer decoupling driven by density-wave order in La${}_4$Ni${}_3$O${}_{10}$
• Pressure-Induced Metal-Insulator and Paramagnet-Altermagnet Transitions in Rutile OsO2 Single Crystals
• Fermi-surface diagnosis for topological superconductivity with $s$-wave-like pairing symmetries
• Theoretical study of the electronic correlation and superconducting pairing in La${}_{2.85}$Pr${}_{0.15}$Ni${}_2$O${}_7$ film grown on SrLaAlO${}_4$
• Enhanced superconductivity via layer differentiation in trilayer Hubbard model
• Weak electronic correlations in the cobalt oxychalcogenide superconductor Na2CoSe2O
• Quantum science with arrays of metastable helium-3 atoms
• Pressure and doping effects on the electronic structure and magnetism of the single-layer nickelate La${}_2$NiO${}_4$
• Superconductivity in the spin-state crossover materials: Nickelates with planar-coordinated low-spin Ni${}^{2+}$ ions
• The $s\pm$ pairing symmetry in the pressured La${}_3$Ni${}_2$O${}_7$ from electron-phonon coupling
• Introduction to High-Temperature Superconductivity for Solid State Chemists
• Emergence of interfacial magnetism in strongly-correlated nickelate-titanate superlattices
• Superconducting phase diagram of multi-layer square-planar nickelates
• Progress of ambient-pressure superconductivity in bilayer nickelate thin films
• Non-Fermi liquid behavior in La${}_3$Ni${}_2$O${}_7$ thin films under hydrostatic pressure
• Pairing mechanism and superconductivity in 1313 phase La${}_3$Ni${}_2$O${}_7$
• Expanding the trilayer Ruddlesden-Popper nickelate family: Synthesis and characterization of Sm${}_4$Ni${}_3$O${}_{10-\delta }$ single crystals
• Emergence and tunability of Fermi-pocket and electronic instabilities in layered Nickelates
• Dopant pairing in a disordered magnetic spin ladder
• Structural stability, electronic structure, and magnetic properties of the single-layer trilayer La3Ni2O7 polymorph
• `Interaction annealing' to determine effective quantized valence and orbital structure: an illustration with ferro-orbital order in WTe${}_2$
• Impact of multiband effects on non-Fermi-liquid transport phenomena in bilayer nickelates
• Unconventional Pressure Dependent Interorbital and Interlayer Doping in Superconducting Nickelates
• Flat Surface State with Octupole Moment in an $e_g$ Orbital System on a Simple Cubic Lattice
• Enhancement of superconductivity on thin film of Sn under high pressure
• Structural design and multiple magnetic orderings of the intergrowth compound Eu${}_2$CuMn${}_2$P${}_3$
• Pressure-induced exciton formation and superconductivity in platinum-based mineral Sperrylite
• Multiorbital character of the density wave in trilayer nickelate superconductors
• Floating zone growth at high oxygen pressures in Ruddlesden-Popper bilayer nickelate Y${}_y$Sr${}_{3-y}$Ni${}_{2-x}$Al${}_x$O${}_{7-\delta }$
• Weak coupling theory of nickel-based 327 superconductors
• Unveiling the critical role of interfacial strain in adjusting electronic phase transitions in correlated vanadium dioxide
• Unconventional superconductivity emerging along with the strange-metal behavior in UAs2 under pressure
• Effect of doping on the electronic structure, orbital-dependent renormalizations, and magnetic correlations in bilayer La${}_3$Ni${}_2$O${}_7$
• Magnetically Mediated Cross-Layer Pairing in Pressurized Trilayer Nickelate La${}_4$Ni${}_3$O${}_{10}$
• Bosonization solution of the Kondo lattice in a Luttinger liquid
• Valency, charge-transfer, and orbital-dependent correlation in bilayer nickelates Nd3Ni2O7
• Non-Fermi Liquid Behavior of the $t$-$J$ Model in the Strange Metal Phase: $U(1)$ Gauge Theory Consistent with Local Constraints
• Pauli-limited upper critical field and anisotropic depairing effect of La2.82Sr0.18Ni2O7 superconducting thin film
• Spin Fluctuations in the Rare-Earth Doped Bilayer Nickelates
• Raman response in superconducting multiorbital systems with application to nickelates
• $L{a}_{3}P{d}_{2}Na{O}_9$: A High-Valent Insulating Palladate
• Sublattice polarization and filamentary superconductivity in strained graphene
• Observation of correlated plasmons in low-valence nickelates
• Strain-triggered high-temperature superconducting transition in two-dimensional carbon allotrope
• Evolution of Correlated Electrons in $\mathrm{L}{\mathrm{a}}_3\mathrm{N}{\mathrm{i}}_2{\mathrm{O}}_7$ at Ambient Pressure: a Study of Double-Counting Effect
• Charge disproportionation as a possible mechanism towards polar antiferromagnetic metal in molecular orbital crystal
• Layer-Resolved Impurity States Reveal Competing Pairing Mechanisms in Trilayer Nickelate Superconductor La${}_4$Ni${}_3$O${}_{10}$
• Unusual antiferromagnetic order and fluctuations in RbMn${}_6$Bi${}_5$
• Intertwined Charge and Spin Density Waves in Trilayer Nickelate La${}_4$Ni${}_3$O${}_{10}$ Revealed by ${}^{139}$La NQR
• Layer controlled orbital selective Mott transition in monolayer nickelate
• Crystal growth and characterization of a hole-doped iron-based superconductor Ba(Fe${}_{0.875}$Ti${}_{0.125}$)${}_2$As${}_2$
• Magnetic field tuned superconducting and normal phase magnetism in CeCo${}_{0.5}$Rh${}_{0.5}$In${}_5$
• Interplay of orbital-selective Mott criticality and flat-band physics in La${}_3$Ni${}_2$O${}_6$
• Multimagnon and multispinon $L_3$-edge RIXS spectra of an effective ${\tilde{J}}_1-{\tilde{J}}_2-{\tilde{J}}_3$ square lattice Heisenberg model
• Absence of two-orbital superconductivity in cuprate family: A DFT+DMFT perspective
• Origin of the tiny energy gap and Dirac points in monoclinic trilayer nickelate La${}_4$Ni${}_3$O${}_{10}$
• Superconductivity in the pressure-amorphized topological insulator CrP${}_4$
• Bridging ambient- and high-pressure superconductivity in La${}_2$LnNi${}_2$O${}_7$ films