Suppression of the antiferromagnetic pseudogap in the electron-doped high-temperature superconductor by "protect annealing"

Abstract

In the hole-doped cuprates, a small amount of carriers suppresses antiferromagnetism and induces superconductivity. In the electron-doped cuprates, on the other hand, superconductivity appears only in a narrow range of high electron concentration ($\sim$ doped Ce content) after reduction annealing, and strong antiferromagnetic (AFM) correlation persists in the superconducting phase. Recently, Pr${}_{1.3-x}$La${}_{0.7}$Ce${}_x$CuO${}_4$ (PLCCO) bulk single crystals annealed by a "protect annealing" method showed a high $T_c$ of $\sim$ 27 K for small Ce content down to $x\sim 0.05$. By angle-resolved photoemission spectroscopy (ARPES) measurements of PLCCO crystals, we observed a sharp quasi-particle peak on the entire Fermi surface without signature of an AFM pseudogap unlike all the previous work, indicating a dramatic reduction of AFM correlation length and/or of magnetic moments. The superconducting state was found to extend over a wide electron concentration range. The present ARPES results fundamentally change the long-standing picture on the electronic structure in the electron-doped regime.

23 pages, 7 figures

References in corpus (11)

• Charge ordering in the electron-doped superconductor Nd2-xCexCuO4
• Spin correlations in the electron-doped high-transition-temperature superconductor Nd{2-x}Ce{x}CuO{4+/-delta}
• Microscopic annealing process and its impact on superconductivity in T'-structure electron-doped copper oxides
• Electronic Structure of Electron-doped Sm1.86Ce0.14CuO4: Strong `Pseudo-Gap' Effects, Nodeless Gap and Signatures of Short Range Order
• Paramagnon-induced dispersion anomalies in the cuprates
• Angle-resolved photoemission spectroscopy of electron-doped cuprate superconductors: Isotropic electron-phonon coupling
• Weak coupling Bardeen-Cooper-Schrieffer suerconductivity in the Electron-Doped Cuprate Superconductors
• Antiferromagnetism-superconductivity competition in electron-doped cuprates triggered by oxygen reduction
• Local tunneling spectroscopy of the electron-doped cuprate Sm1.85Ce0.15CuO4
• Momentum anisotropy of the scattering rate in cuprate superconductors
• Effects of chemical pressure on the Fermi surface and band dispersion in the electron-doped high-Tc superconductors

Cited by in corpus (54)

• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Exact critical exponents for the antiferromagnetic quantum critical metal in two dimensions
• Exceptional band touching for strongly correlated systems in equilibrium
• Hole-pocket-driven superconductivity and its universal features in the electron-doped cuprates
• Evolution of charge order topology across a magnetic phase transition in cuprate superconductors
• Strong electron correlation behind the superconductivity in Ce-free and Ce-underdoped high-Tc T'-cuprates
• Band Structure of Overdoped Cuprate Superconductors: Density Functional Theory Matching Experiments
• Novel Electronic State and Superconductivity in the Electron-Doped High-Tc T'-Superconductors
• Electronic Structure of Ce-Doped and -Undoped Nd${}_2$CuO${}_4$ Superconducting Thin Films Studied by Hard X-ray Photoemission and Soft X-ray Absorption Spectroscopy
• The Valence Transition Model of Pseudogap, Charge-Order and Superconductivity in Electron- and Hole-Doped Copper Oxides
• Angle-resolved photoemission spectroscopy of the low-energy electronic structure of superconducting Pr${}_2$CuO${}_4$ driven by oxygen non-stoichiometry
• Superfluid stiffness in cuprates: Effect of Mott transition and phase competition
• Evolution of remnant Fermi surface state in lightly-doped correlated spin-orbit insulator Sr${}_{2-x}$La${}_x$IrO${}_4$
• Extended superconducting dome of electron-doped cuprates after protect annealing revealed by ARPES
• Transport anomalies and quantum criticality in electron-doped cuprate superconductors
• Staggered Flux State in Two-Dimensional Hubbard Models
• Superconductivity-insensitive order at $q$~1/4 in electron doped cuprates
• $d$-wave superconducting gap observed in protect-annealed electron-doped cuprate superconductors Pr${}_{1.3-x}$La${}_{0.7}$Ce${}_x$CuO${}_4$
• Ce-doping and reduction annealing effects on electronic states in Pr${}_{2-x}$Ce${}_x$CuO${}_4$ studied by Cu $K$-edge X-ray absorption spectroscopy
• Disorder-sensitive pump-probe measurements on Nd${}_{1.83}$Ce${}_{0.17}$CuO${}_{4\pm \delta }$ films
• Band-Renormalization Effects and Predominant Antiferromagnetic Order in Two-Dimensional Hubbard Model
• Autocorrelation of quasiparticle spectral intensities and its connection with quasiparticle scattering interference in cuprate superconductors
• Doping dependence of charge order in electron-doped cuprate superconductors
• Metal-insulator transition in copper oxides induced by apex displacements
• Pseudogap in electron-doped cuprates: Strong correlation leading to band splitting
• Vortex Dynamics and Phase Diagram in the Electron Doped Cuprate Superconductor Pr${}_{0.87}$LaCe${}_{0.13}$CuO${}_4$
• Anomalous normal state gap in an electron-doped cuprate
• Anisotropic dressing of electrons in electron-doped cuprate superconductors
• Pressure tuning of structure, superconductivity and novel magnetic order in the Ce-underdoped electron-doped cuprate T'-Pr_1.3-xLa_0.7Ce_xCuO_4 (x = 0.1)
• Superconductivity induced by structural reorganization in the electron-doped cuprate Nd${}_{2-x}$Ce${}_x$CuO${}_4$
• Low-temperature T-linear resistivity in the strange metal phase of overdoped cuprate superconductors due to umklapp scattering from a spin excitation
• Disorder effects on hot spots in electron-doped cuprates
• Resilient Fermi liquid and strength of correlations near an antiferromagnetic quantum critical point
• Electron-Doping Effect on Tc in the Undoped (Ce-Free) Superconductor T'-La1.8Eu0.2CuO4 Studied by the Fluorine Substitution for Oxygen
• Oxide Fermi liquid universality revealed by electron spectroscopy
• Suppression of Antiferromagnetism in Electron-Doped Cuprate $T^{\prime }$-${\mathrm{La}}_{2-x}{\mathrm{Ce}}_x{\mathrm{CuO}}_{4\pm \delta }$
• Influence of impurities on electronic structure in cuprate superconductors
• Post-growth annealing effects on charge and spin excitations in Nd${}_{2-x}$Ce${}_x$CuO${}_4$
• Nature of carrier doping in T'-La1.8-xEu0.2SrxCuO4 studied by X-Ray Photoemission and Absorption Spectroscopy
• ARPES autocorrelation in electron-doped cuprate superconductors
• Muon spin relaxation study of the spin correlation in the overdoped regime of electron-doped high-Tc cuprate superconductors
• Oxygen on-site Coulomb energy in Pr${}_{1.3-x}$La${}_{0.7}$Ce${}_x$CuO${}_4$ and Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ and its relation with Heisenberg exchange
• DMFT study on the electron-hole asymmetry of the electron correlation strength in the high Tc cuprates
• Distinct variation of electronic states due to annealing in La${}_{1.8}$Eu${}_{0.2}$CuO${}_4$ and Nd${}_2$CuO${}_4$
• Ambipolar doping of a charge-transfer insulator in the Emery model
• Simplification of the local full vertex in the impurity problem in DMFT and its applications for the nonlocal correlation
• Correlation between the strength of low-temperature T-linear normal-state resistivity and $T_{\mathrm{c}}$ in overdoped electron-doped cuprate superconductors
• Inhomogeneous reduction-annealing effects on the electron-doped cuprate superconductor revealed by micro-focused angle-resolved photoemission spectroscopy
• Unusual electronic structure in underdoped cuprate superconductors
• Asymmetric doping dependence of superconductivity between hole- and electron-doped triangular-lattice superconductors
• Cu-spin Correlation in the Electron-overdoped High-Tc Cuprate Thin Films of La_2-x_Ce_x_CuO_4_ Probed by Low-energy Muons
• Impurity-Scattering Assisted Umklapp Scattering as the Origin of Low-Temperature Resistivity in the Normal-State of Cuprate Superconductors
• Renormalization of dispersion in electron-doped bilayer cuprate superconductors
• Electronic State of T'-Pr${}_{1.3-x}$La${}_{0.7}$Ce${}_x$CuO${}_4$ ($x=0.10$) Studied by Compton Scattering