Eliashberg function in an amorphous simple metal alloy Sn1-xCux determined by electron tunneling. Academic Article uri icon

abstract

  • Superconducting tunneling measurements for amorphous Sn1-xCux (0.08x0.41) have been inverted to determine the Eliashberg function 2F() as the electron-phonon coupling parameter and the superconducting transition temperature Tc decrease from 1.8 to 1.0 and 6.87 K to 3.91 K, respectively, with the Cu content. The best fit to the experimental tunneling data was given with a linear dependence for 2F() at low frequencies for all compositions. This linear dependence is consistent with the model for phonon damping proposed by Belitz and Wybourne (following paper) which properly incorporates electronic damping but also includes a strong nonelectronic contribution. 1995 The American Physical Society.

published proceedings

  • Phys Rev B Condens Matter

author list (cited authors)

  • Watson, P. W., & Naugle, D. G.

complete list of authors

  • Watson, PW||Naugle, DG

publication date

  • January 1, 1995 11:11 AM