Frequency dispersion caused in the conductivity of metal microcontacts by nonequilibrium-phonon relaxation
Kulik I. O.
There should be an appreciable frequency dispersion in the nonlinear component of the current-voltage characteristic of a point contact between normal metals in the "background region" (i.e., at bias voltages eV> 1fcoD). This dispersion would be caused by the relaxation of a nonequilibrium phonon gas. The observation of this effect will make it possible to directly determine the relaxation frequencies of the Debye phonons of a metal.