Quantum interference of a Zn impurity in d -wave superconductors

Hong Yi Chen, Lingyin Zhu, C. S. Ting

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Abstract

The local differential tunneling conductance on a Zn impurity in a disordered d -wave superconductor is studied. Quantum interference between many impurities leads to definitive quasiparticle spectra. We suggest that an elaborate analysis on impurity-induced spectra with quantum interference effects included may be able to pin down the sign and strength of the scattering potential of a Zn impurity in the low-density limit. Numerical simulations calculated with appropriately determined impurity parameters are in satisfactory agreement with the observations from scanning tunneling microscopy experiments even in subtle details.

Original languageEnglish
Article number172505
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number17
DOIs
Publication statusPublished - 2006 Jun 5

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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