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https://repositorio.ufba.br/handle/ri/13655
metadata.dc.type: | Artigo de Periódico |
Título : | Raman scattering of hght off a superconducting alloy containing paramagnetic impurities |
Otros títulos : | Physical Review B |
Autor : | Cuden, C. B. Ramos, A. da. S. |
metadata.dc.creator: | Cuden, C. B. Ramos, A. da. S. |
Resumen : | Raman scattering of light off a superconductor doped with a small concentration of paramagnetic impurities is discussed without recourse to the quasiparticle approximation. The scattering efficiency defined in terms of Kubo's nonlinear response theory in a form suitable for systematic diagrammatic expansion is used as the starting point. This is examined in the four-component Eliashberg-Gorkov space for the case of constant transition-matrix elements, in the limit of small momentum transfer (London limit), and in the Eliashberg approximation of neglecting the momentum dependence of the electronic self-energy. For the specific case of Fe impurities in quenched In films numerical calculations have been made for the ratio of the scattering efficiency in the superconducting and normal states as a function of the reduced frequency and temperature for different impurity concentrations. |
Editorial : | Physical Review B |
URI : | http://repositorio.ufba.br/ri/handle/ri/13655 |
Fecha de publicación : | 1979 |
Aparece en las colecciones: | Artigo Publicado em Periódico (FIS) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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88888888888888888888.pdf_3 | 646,21 kB | Adobe PDF | Visualizar/Abrir |
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