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Metallic electrical transport in inter-graphitic planes of an individual tubular carbon nanocone

机译:单个管状碳纳米锥在石墨间平面内的金属电传输

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摘要

Tubular carbon cones (TCCs) with a herring-bone-like graphitic structure are synthesized on gold wire via the bias-assisted hot filament chemical vapor deposition (HFCVD) method. The electrical transport properties of an individual TCC are studied in the temperature range from 300 to 500 K by using a double probe scanning electron microscopy (DPSEM) in situ electrical measurement system. The high-resistance I-V characteristics of W-TCC-Au back-to-back double junctions show that electrons tunnel through the W-TCC junction, while thermoionic transport through the Au-TCC junction contributes to low-resistance properties. Temperature dependence of the electrical characteristics indicates that inter-graphitic-plane electrical transport in TCC is metallic.
机译:通过偏置辅助热丝化学气相沉积(HFCVD)方法在金线上合成了具有人字形石墨结构的管状碳锥(TCC)。通过使用双探针扫描电子显微镜(DPSEM)原位电测量系统,在300至500 K的温度范围内研究了单个TCC的电传输性质。 W-TCC-Au背靠背双结的高电阻I-V特性表明,电子通过W-TCC结隧穿,而热离子通过Au-TCC结的输运有助于降低电阻。电气特性的温度依赖性表明,TCC中的石墨层间电传输是金属的。

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