Imaging the effects of an impurity like Zn in high-T-c superconductors [Nature 61 (2000) 746] has rekindled interest in defect problems in the superconducting phase. This has prompted us here to re-examine the early work of March and Murray [Phys. Rev. 120 (1960) 830] on the linear response function in an initially translationally invariant Fermi gas. In particular, we present corresponding results for a superconductor at zero temperature, both in the s- and in the cl-wave case, and mention their direct physical relevance in the case when the impurity potential is highly localized.
Titolo: | Linear response function around a localized impurity in a superconductor |
Autori interni: | |
Data di pubblicazione: | 2003 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11769/1152 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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