Observation of Wigner cusps in a metallic carbon nanotube

B. T. Blue; R. Tsuchikawa; A. Ahmadi; Z. Zhang; D. Heligman; S. D. Lough; J. Hone; E. R. Mucciolo; M. Ishigami

doi:10.1016/j.ssc.2022.114834

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arXiv · 2303.17687

Observation of Wigner cusps in a metallic carbon nanotube

B. T. Blue·R. Tsuchikawa·A. Ahmadi·Z. Zhang·D. Heligman·S. D. Lough·J. Hone·E. R. Mucciolo·M. Ishigami

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Abstract

Previous gate-dependent conductance measurements of metallic carbon nanotubes have revealed unexplainable conductance suppressions, occurring at two different gate voltages. These were previously attributed to the gate-dependency of contact resistance. Our gate-dependent conductivity measurements on a metallic nanotube with known chirality show that these bimodal conductance suppressions are the manifestations of Wigner cusps, often seen in atomic and nuclear physics experiments.

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B. T. Blue, R. Tsuchikawa, A. Ahmadi, Z. Zhang, D. Heligman, S. D. Lough, J. Hone, E. R. Mucciolo, M. Ishigami. 2023-03-30. Observation of Wigner cusps in a metallic carbon nanotube. https://doi.org/10.1016/j.ssc.2022.114834

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