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Theory of SIS tunnelling in cuprates

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posted on 31.03.2006 by A.S. Alexandrov, Chanun Sricheewin
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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121301 bytes

Publication date

2001

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This is a pre-print.

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en

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