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Minigap in a SN junction with paramagnetic impurities

B. Crouzy·E. Bascones·D. A. Ivanov
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Abstract

We study the effect of spin-flip scattering on the density of states in a long diffusive S-N junction with transparent interface. We calculate the critical value of the spin-flip scattering rate at which the minigap closes and give the dependence of the minigap on the spin-flip rate. For the system we consider, the minigap and the critical spin-flip rate have the scale of the Thouless energy, and not of the superconducting gap.

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B. Crouzy, E. Bascones, D. A. Ivanov. 2005-06-20. Minigap in a SN junction with paramagnetic impurities. https://doi.org/10.1103/physrevb.72.092501

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