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Quasi-Particle Bound States around Impurities in d-wave Superconductors

Stephan Haas·Kazumi Maki
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Abstract

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 d-wave superconductors. These pictures contain detailed information about the spinor wave functions u(r) and v(r) of bound states with energy E_0 \sim Delta/30, centered at the Zn-sites. We show that this type of wave function follows from the solutions of the Bogoliubov-de Gennes equations for d-wave superconductors.

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Stephan Haas, Kazumi Maki. 2000-04-22. Quasi-Particle Bound States around Impurities in d-wave Superconductors. https://doi.org/10.1103/physrevlett.85.2172

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