Theory of SIS tunnelling in cuprates

Details Theory of SIS tunnelling in cuprates Theory of SIS tunnelling in cuprates

2001-02-15

arxiv.org/abs/cond-mat/0102284v3

Physics

Condensed Matter

Superconductivity

10 pages, 2 figures

Scientific paper

10.1209/epl/i2002-00434-8

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.

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