Quasi-particle dephasing time in disordered d-wave superconductors

Details Quasi-particle dephasing time in disordered d-wave superconductors Quasi-particle dephasing time in disordered d-wave superconductors

2005-01-20

arxiv.org/abs/cond-mat/0501484v2

Phys. Rev. B 72, 104512 (2005)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.72.104512

We evaluate the low-temperature cutoff for quantum interference 1/tf induced in a d-wave superconductor by the diffusion enhanced quasiparticle interactions in the presence of disorder. We carry out our analysis in the framework of the non-linear sigma-model which allows a direct calculation of 1/tf, as the mass of the transverse modes of the theory. Only the triplet amplitude in the particle-hole channel and the Cooper amplitude with is pairing symmetry contribute to 1/tf. We discuss the possible relevance of our results to the present disagreement between thermal transport data in cuprates and the localization theory for d-wave quasiparticles.

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