Zn-Neighbor Cu NQR in Zn-Substituted YBa2Cu3O7-d and YBa2Cu4O8

Abstract

We studied local electronic states near Zn in optimally doped YBa${}_2$(Cu${}_{1-x}$Zn_x)${}_3$O${}_{7-\delta }$ and underdoped YBa${}_2$(Cu${}_{1-x}$Zn_x)${}_4$O${}_8$ via satellite signals of plane-site Cu(2) nuclear quadrupole resonance (NQR) spectra. From the relative intensity of Cu NQR spectra, the satellite signals are assigned to Zn-neighbor Cu NQR lines. The Cu nuclear spin-lattice relaxation time of the satellite signal is shorter than that of the main signal, which indicates that the magnetic correlation is locally enhanced near Zn both for the underdoped and the optimally doped systems. The pure YBa${}_2$Cu${}_4$O${}_8$ is a stoichiometric, homogenous, underdoped electronic system; nevertheless, the Zn-induced inhomogeneous magnetic response in the CuO${}_2$ plane is more marked than that of the optimally doped YBa${}_2$Cu${}_3$O${}_{7-\delta }$.

9 pages including 8 figures, to be published in Phys. Rev. B

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Cited by in corpus (21)

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• Finite-temperature phase diagram of nonmagnetic impurities in high-temperature superconductors using a d=3 tJ model with quenched disorder
• Disordered Fulde-Ferrel-Larkin-Ovchinnikov State in d-wave Superconductors
• Superconducting Fluctuation and Pseudogap in Disordered Short Coherence Length Superconductor
• Muon Spin Rotation Measurements of Heterogeneous Field Response in Overdoped La2-xSrxCuO4
• Mechanism of metallization and superconductivity suppression in YBa${}_2($Cu${}_{0.97}$Zn${}_{0.03}{)}_3$O${}_{6.92}$ revealed by ${}^{67}$Zn NQR
• Emergence of Antiferromagnetic Correlation in LiTi2-xVxO4 via 7Li NMR
• Comment on "Localized behavior near the Zn impurity in YBa2Cu4O8 as measured by nuclear quadrupole resonance"
• Friedel oscillations in a two-band Hubbard model for CuO chains
• Microscopic origin of local moments in a zinc-doped high-$T_c$ superconductor
• Vortex State of Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$ via ${}^{205}$Tl NMR at 2 Tesla
• Frustrated Further-Neighbor Antiferromagnetic and Electron-Hopping Interactions in the d=3 tJ Model: Finite-Temperature Global Phase Diagrams from Renormalization-Group Theory
• Charge and spin density distributions around Zn impurities in cuprates
• Reply to "Localized Behavior near the Zn Impurity in YBa2Cu4O8 as Measured By Nuclear Quadrupole Resonance"
• Spectral Distribution of Cu Nuclear Spin-Lattice Relaxation Time in Superconducting Bi2Sr2CaCu2O8+d
• Why a local moment induces an antiferromagnetic ordering: An RVB picture
• Cu NQR and NMR Studies of Optimally Doped Ca2-xNaxCuO2Cl2
• Site-selective ${}^{63}$Cu NMR study of the vortex cores of Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$