Gap function symmetry and spin dynamics in electron-doped cuprate superconductor

Abstract

An antiferromagnetic (AF) spin fluctuation induced pairing model is proposed for the electron-doped cuprate superconductors. It suggests that, similar to the hole-doped side, the superconducting gap function is monotonic d_{x^2-y^2}-wave and explains why the observed gap function has a nonmonotonic d_{x^2-y^2}-wave behavior when an AF order is taken into account. Dynamical spin susceptibility is calculated and shown to be in good agreement with the experiment. This gives a strong support to the proposed model.

5 RevTeX4 pages, 2 EPS figures

References in corpus (20)

• Doping dependence of an n-type cuprate superconductor investigated by ARPES
• The Spin Excitation Spectrum in Superconducting $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6.85}$
• Direct Observation of Non-Monotonic dx2-y2-Wave Superconducting Gap in Electron-Doped High-Tc Superconductor Pr0.89LaCe0.11CuO4
• Nonmonotonic d_{x^2-y^2} Superconducting Order Parameter in Nd_{2-x}Ce_xCuO_4
• Universal Dispersive Excitations in the High-Temperature Superconductors
• Commensurate spin dynamics in the superconducting state of an electron-doped cuprate superconductor
• Angle-Resolved Photoemission Spectroscopy of the Antiferromagnetic Superconductor Nd1.87Ce0.13CuO4: Anisotropic Spin-Correlation Gap, Pseudogap, and the Induced Quasiparticle Mass Enhancement
• Asymmetry of the electronic states in hole- and electron-doped cuprates: Exact diagonalization study of the t-t'-t''-J model
• Evolution of Superconductivity in Electron-Doped Cuprates: Magneto-Raman Spectroscopy
• Superfluid response in electron-doped cuprate superconductors
• High Energy Spin Excitations in Electron-Doped Superconducting Pr${}_{0.88}$LaCe${}_{0.12}$CuO${}_{4-\delta }$ with $T_c=21$ K
• Electronically competing phases and their magnetic field dependence in electron-doped nonsuperconducting and superconducting Pr0.88LaCe0.12CuO4
• Phase-sensitive order parameter symmetry test experiments utilizing Nd2-xCexCuO4-y/Nb zigzag junctions
• Nonmonotonic $d_{x^2-y^2}$ superconducting gap in electron-doped Pr${}_{0.89}$LaCe${}_{0.11}$CuO${}_4$: Evidence of coexisting antiferromagnetism and superconductivity?
• Fermi surface evolution in the antiferromagnetic state for the electron-doped t-t'-t''-J model
• Electronic inhomogeneity and competing phases in electron-doped superconducting Pr0.88LaCe0.12CuO4
• Nonmonotonic gap in the coexisting antiferromagnetic and superconducting state for electron-doped cuprate superconductors
• Theory of Raman scattering on electron-doped high-$T_c$ superconductor
• Spin dynamics in the antiferromagnetic phase for electron-doped cuprate superconductors
• Comment on: Nonmonotonic $d_{x^2-y^2}$ Superconducting Order Parameter in Nd${}_{2-x}$Ce${}_x$CuO${}_4$

Cited by in corpus (3)

• Upper critical field in electron-doped cuprate superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$: two-gap model
• Doping effect on the anomalous behavior of the Hall effect in electron-doped superconductor Nd${}_{2-x}$Ce${}_x$CuO${}_{4+\delta }$
• Superfluid density in the slave-boson theory