Quasiparticle Bound States around Impurities in dx2−y2-Wave Superconductors
Stephan Haas, Kazumi Maki
DOI 10.1103/PhysRevLett.85.2172 · Physical Review Letters
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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 [S. H. Pan et al., Nature (London) 403, 746 (2000)] has provided high-resolution images of the local density of states around nonmagnetic 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∼Δ/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 dx2−y2-wave superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2212 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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