Haas S, Maki K. Quasiparticle bound states around impurities in d(x(2)-y(2))-wave superconductors.
PHYSICAL REVIEW LETTERS 2000;
85:2172-2175. [PMID:
10970490 DOI:
10.1103/physrevlett.85.2172]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2000] [Indexed: 05/23/2023]
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 d(x(2)-y(2))-wave superconductors. These pictures contain detailed information about the spinor wave functions u(r) and v(r) of bound states with energy E0 approximately 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(x(2)-y(2))-wave superconductors.
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