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Raman scattering by electrons in superconductors: Contribution of the surface region and Coulomb interaction effects

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
74
Issue
6
Identifiers
DOI: 10.1016/0038-1098(90)90338-c
Disciplines
  • Physics

Abstract

Abstract Raman scattering (RS) by electronic excitations of a superconductor (SC) is considered. In the presence of a normal to the SC boundary component of the incident or scattered electromagnetic fields a longitudinal electric field is induced in a metal within the depth of the order of the Coulomb screening length. It is shown for SC with an isotropic Fermi surface that the contribution to the RS cross-section given by longitudinal fields exceeds by several orders that in the previously considered case when only the transverse field component (penetrating into a metal at the skin-layer depth) was taken into account.

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