Strong compensation of the quantum fluctuation corrections in clean superconductor

Details Strong compensation of the quantum fluctuation corrections in clean superconductor Strong compensation of the quantum fluctuation corrections in clean superconductor

2000-01-30

arxiv.org/abs/cond-mat/0001433v1

Physics

Condensed Matter

7 pages 2 figures

Scientific paper

10.1103/PhysRevB.62.8675

The theory of fluctuation conductivity for an arbitrary impurity concentration including ultra-clean limit is developed. It is demonstrated that the formal divergency of the fluctuation density of states contribution obtained previously for the clean case is removed by the correct treatment of the non-local ballistic electron scattering. We show that in the ultra-clean limit ($T\tau \gg \sqrt{\frac{T_c}{T-T_c}}$) the density-of-states quantum corrections are canceled by the Maki-Thompson term and only quasi-classical paraconductivity remains.

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