Journal of Low Temperature Physics

, Volume 66, Issue 1–2, pp 115–125 | Cite as

Excitation spectrum and the density of states for a superconducting bilayer composite

  • S. Yoksan
  • A. D. S. Nagi


The single-particle excitation spectrum and the density of states (DOS) for a superconducting bilayer composite are calculated by solving the Bogoliubov equations. The bilayer consists of two different superconducting films in contact. The superconducting order parameters of the films Δ1 and Δ2 are assumed constant. For various film thicknesses the dependence of the DOS on the ratio Δ12 is shown. This dependence is most prominent for states with excitation energy ɛ less than Δ2.


Magnetic Material Excitation Energy Excitation Spectrum Superconducting Order Parameter Bogoliubov Equation 
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Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • S. Yoksan
    • 1
  • A. D. S. Nagi
    • 1
  1. 1.Guelph-Waterloo Program for Graduate Work in Physics, Department of PhysicsUniversity of WaterlooWaterlooCanada

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