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arXiv · 2312.16269

Comment on "Shot noise in a strange metal"

V. R. Shaginyan·A. Z. Msezane·G. S. Japaridze
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Abstract

The recent paper (Science 382, 907 (2023)) is devoted to measurements of shot noise to probe excitations in nanowires of the heavy fermion (HF) metal $\rm YbRh_2Si_2$. The authors observed that shot noise is strongly suppressed, and claim that the suppression cannot be attributed to either electron-phonon or electron-electron interactions in a Fermi liquid. Their observation suggests that the current is not carried by well-defined quasiparticles in the $\rm YbRh_2Si_2$, and calls for similar research into other strange metals. In this comment, we show that it is unlikely that the affected carriers in bulk $\rm YbRh_2Si_2$ would have undergone any fragmentation.

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V. R. Shaginyan, A. Z. Msezane, G. S. Japaridze. 2023-12-26. Comment on "Shot noise in a strange metal". https://arxiv.org/abs/2312.16269

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