Theory of SIS tunnelling in cuprates

Abstract

We show that the single-particle polaron Green's function describes SIS tunnelling in cuprates, including the absence of Ohm's law at high voltages, the dip/hump features in the first derivative of the current, a substantial incoherent spectral weight beyond quasiparticle peaks and unusual shape of the peaks. The theory allows us to determine the characteristic phonon frequencies, normal and superconducting gaps, impurity scattering rate, and the electron-phonon coupling from the tunnelling data.

10 pages, 2 figures

References in corpus (2)

• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Quasiparticle lifetimes in the charged Bose gas and the cuprates

Cited by in corpus (1)

• Angle-resolved photoemission spectroscopy of band tails in lightly doped cuprates