Tunneling measurements of the electron-phonon interaction in $\mathrm{B}{\mathrm{a}}_{1-\mathrm{x}}{\mathrm{K}}_{\mathrm{x}}\mathrm{Bi}{\mathrm{O}}_3$

P. Samuely, N. L. Bobrov, A. G. M. Jansen +3

The conductance curves of point-contact tunnel junctions between Ag and $\mathrm{B}{\mathrm{a}}_{1-\mathrm{x}}{\mathrm{K}}_{\mathrm{x}}\mathrm{Bi}{\mathrm{O}}_3$ ($x\simeq 0.4$) reveal a BCS behavior with low leakage current at zero voltage and so…