Conductance of metallic carbon nanotubes dipped into metal

Article

关键词: SCANNING TUNNELING MICROSCOPE;    ELECTRONIC-STRUCTURE;    CONTACT RESISTANCE;   

DOI  :  10.1103/PhysRevB.64.201401

来源: SCIE

【 摘 要 】

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 2e(2)/h. 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 (similar to1 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.

【 授权许可】

Free