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

Abstract

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.

4 pages, 2 figures

References in corpus (3)

• The Kondo effect in quantum dots at high voltage: Universality and scaling
• Is the quantum dot at large bias a weak-coupling problem?
• Nonequilibrium Electron Distribution in Presence of Kondo Impurities

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