0 Quasi - Particle Bound States around Impurities in d x 2 − y 2 - wave
نویسنده
چکیده
Zn and Ni impurities in the hole-doped high-temperature superconductors are known to have strong effects on thermodynamic and transport properties. A recent scanning tunneling microscope study of Zn-doped Bi2212 (Pan et al., Nature 403, 746 (2000)) has provided high-resolution images of the local density of states around non-magnetic impurities in dx2−y2-wave superconductors. These pictures contain detailed information about the spinor wave functions u(r) and v(r) of bound states with energy E0 ∼ ∆/30, centered at the Znsites. We show that this type of wave function follows from the solutions of the Bogoliubov-de Gennes equations for dx2−y2-wave superconductors. Typeset using REVTEX
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