Electrical transport properties of boron-doped single-walled carbon nanotubes

Electrical transport properties of boron-doped single-walled carbon nanotubes
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硼掺杂单壁碳纳米管的电传输特性

DOI:
10.1063/1.4790505
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发表时间:
2013-02
影响因子:
3.2
通讯作者:
R. Hatakeyama
R. Hatakeyama
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Y.F. Li;Y.Wang;S.M. Chen;H.F. Wang;T. Kaneko;R. Hatakeyama

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从实验和理论两方面研究了硼掺杂单壁碳纳米管的输运性质。实验发现,B掺杂后,单壁碳纳米管的半导体行为发生了显著的变化,在低温下观察到了异常的电流突变,这可能意味着B掺杂后单壁碳纳米管发生超导转变的可能性。利用密度泛函紧束缚计算,观察到B掺杂导致费米能级附近的态密度峰向价带区移动,表现出明显的电荷转移特性,这与实验观察相一致.
The transport properties of B-doped single-walled carbon nanotubes (SWNTs) are studied from both experimental and theoretical standpoints. Experimentally, it is found that the semiconducting behavior of SWNTs is drastically changed after B-doping, and the unusual abrupt current drops are observed at low temperatures, which may imply the possibility of superconducting transition in B-doped SWNTs. Using the density-functional tight-binding calculation, it is observed that B-doping induces the presence of density of state peaks near the Fermi level which shifts toward the valence band region, showing a clear charge-transfer characteristic, which agrees well with the experimental observations.
DOI: 10.1007/s003390051004
发表时间: 1999-09
期刊: Applied Physics A
影响因子: --
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