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Paper   IPM / Nano-Sciences / 8129
School of Nano Science
  Title:   Electronic spectra of extended Zn impurities in d-wave superconductors
1.  Rostam Moradian
2.  James Annett
3.  Balazs Gy�rffy
  Status:   Published
  Journal: Phys. Rev. B
  No.:  17
  Vol.:  70
  Year:  2004
  Pages:   4
  Publisher(s):   The American Physical Society
  Supported by:  IPM
We study a simple tight binding model of Zn impurities in d-wave superconductors. In addition to a change of the site energy on the impurities site our model allows for a change in the hopping integrals between the impurities and the host atoms. We find that the latter gives rise to a shift of spectral weight from the nearestneighbor sites to the impurity site thereby resolving the conflict between interpretation of experiments and previous calculations.

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