Quasiparticle scattering time in niobium superconducting films

@inproceedings{Leo2011QuasiparticleST,
  title={Quasiparticle scattering time in niobium superconducting films},
  author={Antonio Leo and Gaia Grimaldi and Roberta Citro and Angela Nigro and Sandro Pace and Rudolf Peter Huebener},
  year={2011}
}
We study the quasiparticle energy relaxation processes in superconducting Nb films of different thicknesses corresponding to different electron mean-free paths in a nonequilibrium state; that is, the highly dissipative flux-flow state driven up to the instability point. From the measured current-voltage curves we derive the vortex critical velocity v∗ and the quasiparticle energy relaxation time τ for several temperatures within the Larkin-Ovchinnikov model. Numerical calculations of the… CONTINUE READING

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