Tunneling of current carriers in niobium nitride junctions
Motulevich G.P. , Dzhuraev D.R. , Antonova E. A., Sukhov V. A.
The characteristics ae{V) and dae[V)/dV, where ae is the even part of the conductivity of a tunnel junction, are investigated for NbN-I-Pb and NbN-I-Ag (I is an Nb oxide) junctions in the voltage range V — (ANbN + APb)/e = 0-30 meV and V — Δ NbN /e = 0-31 meV, respectively (4№Ν and AVb are the superconducting energy gaps). The positions of peaks in the electron-phonon interaction (EPI) function are determined in the energy range 0-26 meV.