Interpretation of the tunnel characteristics of HTSC cuprates in the model of superconducting K-pairing

Within the framework of the model of superconducting pairing with a large total momentum (K-pairing model) we interpret the shape “peak-dip-hump” and the asymmetry of the tunnel spectra of HTSC cuprates. The line of minima of quasiparticle energy does not coincide with the Fermi contour. This fact manifests itself in the asymmetry of the tunnel spectra. The existence of the zero-line of the order parameter results in the hump or the dip. The “peak-dip-hump” structure gets sharper as the distance between the Fermi contour and the zero-line of the order parameter decreases.