Direct observation of a Riedel peak at a YBaCuO end-type Josephson junction
Constantinian K. Y., Amatuni L. E., Martirosyan R. M.
The frequency dependence of the amplitude of the oscillatory current 7](Ω) of intrinsic Josephson generation at a single YBaCuO end-type junction has been measured by a direct nonresonant method. The current-voltage characteristic of the junction has the shape characteristic of contacts with a direct conductivity. A significantly broadened Riedel peak is observed. An estimate of the attenuation coefficient of the energy gap, δ~ 1.6χ 10-3, is insufficiently low.