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Conductance of metallic carbon nanotubes dipped into a metal

N. Mingo·Jie Han
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Abstract

We calculate the conductance variation of several metallic carbon nanotubes as their end is being dipped into a liquid metal electrode, where experiments have shown an achievable conductance close to 1 quantum of conductance. The calculated conductance for a (40,40) nanotube indicates that the current flows almost entirely through the pi mode, and not the pi* mode. The calculation also predicts that for narrower nanotubes (~1 nm in diameter), in a 'weak coupling' regime, the saturation of both pi and pi* modes should be observable. An experiment is proposed to verify this point.

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N. Mingo, Jie Han. 2001-10-11. Conductance of metallic carbon nanotubes dipped into a metal. https://doi.org/10.1103/physrevb.64.201401

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