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arXiv · 1710.03030

Charge Fractionalization in a Kondo Device

L. A. Landau·E. Cornfeld·E. Sela
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Abstract

We study nonequilibrium transport through a charge Kondo device realizing the two-channel Kondo critical point in a recent experiment by Iftikhar et al. By computing the current and shot noise at low voltages near the critical point, we obtain a universal Fano factor $e^*/e=1/2$. We identify elementary transport processes as weak scattering of emergent fermions carrying half-integer charge quantum numbers. This forms an experimental fingerprint for fractionalization in a non-Fermi liquid, which, compared to spin-Kondo devices, could be observed at elevated temperatures.

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L. A. Landau, E. Cornfeld, E. Sela. 2017-10-09. Charge Fractionalization in a Kondo Device. https://doi.org/10.1103/physrevlett.120.186801

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