Phonon structure in I-V characteristic of MgB${}_2$ point-contacts

I. K. Yanson, V. V. Fisun, N. L. Bobrov +5

The search of the phonon structure at the above-gap energies was carried out for $d^{2}V/d{I}^2(V)$ spectra of MgB${}_2$ point contacts with a normal metal. The two-band model is a…