Local density of states around a magnetic impurity in high-Tc superconductors based on the t-J model

Abstract

The local density of states (LDOS) around a magnetic impurity in high-Tc superconductors is studied using the two-dimensional t-J model with a realistic band structure. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. In sharp contrast with the nonmagnetic impurity case, the LDOS near the magnetic impurity shows two resonance peaks reflecting the presence of spin-dependent resonance states. It is also shown that these resonance states are approximately localized around the impurity. The present results have an large implication on the scanning tunneling spectroscopy observation of Bi_{2}Sr_{2}Ca(Cu_{1-x}Ni[Zn]_{x})_{2}O_{8+delta}.

4 pages, 3 figures, to appear in Phys. Rev. Lett

References in corpus (4)

• Imaging the Effects of Individual Zinc Impurity Atoms on Superconductivity in Bi2Sr2CaCu2O8+delta
• Impurity-Induced Bound Excitations on the Surface of Bi2Sr2CaCu2O8
• Quasiparticle properties around a nonmagnetic impurity in the superconducting state of the two-dimensional t-J model
• Impurity-induced spin polarization and NMR line broadening in underdoped cuprates

Cited by in corpus (29)

• Interplay of magnetism and high-Tc superconductivity at individual Ni impurity atoms in Bi2Sr2CaCu2O8+d
• Quasiparticle Scattering Interference in High Temperature Superconductors
• Impurity in a d-wave superconductor: Kondo effect and STM spectra
• Inhomogeneous d-wave superconducting state of a doped Mott insulator
• Kondo effect of impurity moments in d-wave superconductors: Quantum phase transition and spectral properties
• Tunneling conductance of normal metal / $d_{x^2-y^2}$-wave superconductor junctions in the presence of broken time reversal symmetry states near interfaces
• Effect of unitary impurities in non-STM-types of tunneling in high-T_c superconductors
• Quasi-Particle Bound States around Impurities in d-wave Superconductors
• Marginal Fermi liquid resonance induced by a quantum magnetic impurity in d-wave superconductors
• Impurity induced resonant state in a pseudogap state of a high temperature superconductor
• Two impurities in a d-wave superconductor:local density of states
• Local Quasiparticle States around an Anderson Impurity in a d-Wave Superconductor: Kondo Effects
• Quantum interference between non-magnetic impurities in d_x2-y2-wave superconductors
• Local Quasiparticle States near a Unitary Impurity with Induced Magnetic Moment in a d-Wave Superconductor
• Revisiting the vortex-core tunnelling spectroscopy in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• Inelastic Tunneling Spectroscopy in a D-wave Superconductor
• Influence of impurity scattering on tunneling conductance in normal metal- d -wave superconductor junctions
• Tunneling conductance in normal metal - high $T_C$ cuprate junctions in the presence of magnetic field
• Impurity Potential Renormalization by Strong Electron Correlation
• The Energy-dependent Checkerboard Patterns in Cuprate Superconductors
• Localized Bosonic Modes in Superconductors
• Interplay of quantum magnetic and potential scattering around Zn or Ni impurity ions in superconducting cuprates
• Magnetic polarization induced by nonmagnetic impurities in high Tc cuprates
• Electronic structure and spontaneous internal field around non-magnetic impurities in spin-triplet chiral p-wave superconductors
• Impurity Scattering Effects in STM Studies of High-T_c Superconductors
• Zeeman effects on the impurity-induced resonances in d-wave superconductors
• Microscopic origin of local moments in a zinc-doped high-$T_c$ superconductor
• Nanoscale Impurity Structures on the Surface of $d_{x^2-y^2}$-wave Superconductors
• The effects of Zn Impurity on the Properties of Doped Cuprates in the Normal State