2000/12/31 by Jian-Xin Zhu, Jian‐Xin Zhu, C. S. Ting · 1 citation
Engineering · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #Superconductivity in MgB2 and Alloys #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.64.060501
4 pages, 3 ps figures, reference updated, typos removed
arxiv created 2001/01/11 · openalex publication_date 2001/07/18 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The local quasiparticle density of states around a very strong nonmagnetic impurity with a Kondo-like magnetic moment induced at its nearest neighbors in a d-wave superconductor is studied. We show that the interference between the strong impurity potential scattering and the Kondo effect leads to novel quasiparticle spectra around the impurity, which are strikingly different from the case of a single unitary or magnetic impurity. The recent STM image of the local differential tunneling conductance around the Zn impurity in a high-Tc cuprate can be explained if the blocking effect of BiO surface layer between the tip and probed CuO2 plane is taken into account.