Single-walled carbon nanotube weak links: from Fabry-Pérot to Kondo regime

2008/09/19 by Fan Wu, F. Wu, Wu, F. +13
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Atomic and Subatomic Physics Research #FOS: Physical sciences #Quantum and electron transport phenomena #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.0809.3386

4 pages, 4 figures

openalex publication_date 2008/09/19 · arxiv created 2008/09/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We have investigated proximity-induced supercurrents in single-walled carbon nanotubes in the Kondo regime and compared them with supercurrents obtained on the same tube with Fabry-Pérot resonances. Our data display a wide distribution of Kondo temperatures T_K = 1 - 14 K, and the measured critical current I_CM vs. T_K displays two distinct branches; these branches, distinguished by zero-bias splitting of the normal-state Kondo conductance peak, differ by an order of magnitude at large values of T_K. Evidence for renormalization of Andreev levels in Kondo regime is also found.

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