Theory of the non-equilibrium quasiparticle distribution induced by Kondo defects

Details Theory of the non-equilibrium quasiparticle distribution induced by Kondo defects Theory of the non-equilibrium quasiparticle distribution induced by Kondo defects

2001-04-09

arxiv.org/abs/cond-mat/0104151v1

Phys. Rev. Lett. 88, 176803 (2002).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.88.176803

It is shown that in resistive nanowires out of equilibrium containing either single- or two-channel Kondo impurities the distribution function $f(E,U)$ obeys scaling behavior in terms of the quasiparticle energy $E$ and the bias voltage $U$. The numerically calculated $f(E,U)$ curves explain quantitatively recent experiments on Cu and Au nanowires. The systematics of the impurity concentration c_{imp} extracted from the comparison between theory and results on various Cu and Au samples strongly suggests that in these systems the scaling arises from magnetic Kondo impurities.

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