Nodeless superconductivity arising from strong (pi,pi) antiferromagnetism in the infinite-layer electron-doped cuprate Sr1-xLaxCuO2

Abstract

The asymmetry between electron and hole doping remains one of the central issues in high-temperature cuprate superconductivity, but our understanding of the electron-doped cuprates has been hampered by apparent discrepancies between the only two known families: Re2-xCexCuO4 and A1-xLaxCuO2. Here we report in situ angle-resolved photoemission spectroscopy measurements of epitaxially-stabilized films of Sr1-xLaxCuO2 synthesized by oxide molecular-beam epitaxy. Our results reveal a strong coupling between electrons and (pi,pi) antiferromagnetism that induces a Fermi surface reconstruction which pushes the nodal states below the Fermi level. This removes the hole pocket near (pi/2,pi/2), realizing nodeless superconductivity without requiring a change in the symmetry of the order parameter and providing a universal understanding of all electron-doped cuprates.

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Cited by in corpus (23)

• Photoferroelectric oxides
• Observation of small Fermi pockets protected by clean CuO2 sheets of a high-Tc superconductor
• Hole-pocket-driven superconductivity and its universal features in the electron-doped cuprates
• Direct visualization of ambipolar Mott transition in cuprate CuO2 planes
• Spin-charge interplay in antiferromagnetic La${}_{2-x}$Sr${}_x$CuO${}_4$ studied by the muons, neutrons, and ARPES techniques
• Doping evolution and polar surface reconstruction of the infinite-layer cuprate Sr${}_{1-x}$La${}_x$CuO${}_2$
• Direct observation of nodeless superconductivity and phonon modes in electron-doped copper oxide Sr${}_{1-x}$Nd${}_x$CuO${}_2$
• Bogoliubov Quasiparticle on the Gossamer Fermi Surface in Electron-Doped Cuprates
• Transport anomalies and quantum criticality in electron-doped cuprate superconductors
• Atomic Visualization of Copper Oxide Structure in Infinite-Layer Cuprate SrCuO2
• Gigantic-oxidative atomic-layer-by-layer epitaxy for artificially designed complex oxides
• High magnetic field evolution of the in-plane angular magnetoresistance of electron-doped Sr1-xLaxCuO2 in the normal state
• Optimal Tc for Electron-Doped Cuprate Realized under High Pressure
• Magnon interactions in a moderately correlated Mott insulator
• Anisotropic dressing of electrons in electron-doped cuprate superconductors
• Molecular beam epitaxy growth and surface structure of Sr1-xNdxCuO2 cuprate films
• Percolative Superconductivity in Electron-Doped Sr${}_{1-x}$Eu${}_x$CuO${}_{2+y}$ Films
• Electronic inhomogeneity and band structure on superstructural CuO2 planes of infinite-layer Sr0.94La0.06CuO2+y films
• Opening a nodal gap by fluctuating spin-density-wave in lightly doped La${}_{2-x}$Sr${}_x$CuO${}_4$
• Universal Chemical Formula Dependence of $Ab$ $Initio$ Low-Energy Effective Hamiltonian in Single-Layer Carrier Doped Cuprate Superconductors -- Study by Hierarchical Dependence Extraction Algorithm
• Topological phase transition from nodal to nodeless d-wave superconductivity in electron-doped cuprate superconductors
• Exploring charge and spin fluctuations in infinite-layer cuprate SrCuO${}_2$ from a phonon perspective
• Magnetic phases of electron-doped infinite-layer Sr${}_{1-x}$La${}_x$CuO${}_2$ from first-principles density functional calculations