Reabsorption of nonequilibrium phonons at superconducting point contacts
Yanson I. K. , Fisun V. V. , Bobrov N. L. , Rybal'chenko L. G.
When there is a deviation from the inequality d < le {d is the contact diameter, and le is the energy relaxation length of the electrons), structural fea tures are produced on the current-voltage characteristics of S-c-N contacts at characteristic phonon energies because of the decrease in Δ. due to the accumulation of nonequilibrium phonons with low group velocities near the contact.