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Local Quasiparticle States around an Anderson Impurity in a d-Wave Superconductor: Kondo Effects
Jian-Xin Zhu, C. S. Ting
The Kondo effects of an Anderson impurity embedded into a d-wave superconductor is studied. Within the slave-boson mean-field approach, the derived Bogoliubov-de Gennes equations a…
Quasiparticle Localization in Disordered d-Wave Superconductors
Jian-Xin Zhu, D. N. Sheng, C. S. Ting
An extensive numerical study is reported on disorder effect in two-dimensional d-wave superconductors with random impurities in the unitary limit. It is found that a sharp resonant…
Effect of unitary impurities in non-STM-types of tunneling in high-T_c superconductors
Jian-Xin Zhu, C. S. Ting, Chia-Ren Hu
Based on an extended Hubbard model, we present calculations of both the local (i.e., single-site) and spatially-averaged differential tunneling conductance in d-wave superconductor…
Superconductivity in Ferromagnetic RuSr_2GdCu_2O_8
Jian-Xin Zhu, C. S. Ting, C. W. Chu
The phase diagram of temperature versus exchange field is obtained within a BCS model for d-wave superconductivity in CuO_2 layers which is coupled to ferromagnetic RuO_2 layers in…