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首页> 外文期刊>Comptes rendus. Physique >Coupled study by TEM/EELS and STM/STS of electronic properties of C- and CN_x-nanotubes
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Coupled study by TEM/EELS and STM/STS of electronic properties of C- and CN_x-nanotubes

机译:通过TEM / EELS和STM / STS进行的C-和CN_x-纳米管电子特性的耦合研究

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摘要

Carbon nanotubes are the focus of considerable research efforts due to their fascinating physical properties. They provide an excellent model system for the study of one-dimensional materials and molecular electronics. The chirality of nanotubes can lead to very different electronic behaviour, either metallic or semiconducting. Their electronic spectrum consists of a series of Van Hove singularities defining a bandgap for semiconducting tubes and molecular orbitals at the corresponding energies. A promising way to tune the nanotubes electronic properties for future applications is to use doping by heteroatoms. Here we report on the experimental investigation of the role of many-body interactions in nanotube bandgaps, the visualization in direct space of the molecular orbitals of nanotubes and the properties of nitrogen doped nanotubes using scanning tunneling microscopy and transmission electron microscopy as well as electron energy loss spectroscopy.
机译:碳纳米管因其迷人的物理特性而成为大量研究工作的重点。它们为一维材料和分子电子学的研究提供了一个极好的模型系统。纳米管的手性可以导致非常不同的电子行为,无论是金属的还是半导体的。它们的电子光谱由一系列Van Hove奇点组成,这些奇点为半导体管和相应能量的分子轨道定义了带隙。调整纳米管电子性能以用于未来应用的一种有前途的方法是使用杂原子掺杂。在这里,我们通过扫描隧道显微镜和透射电子显微镜以及电子能,对多体相互作用在纳米管带隙中的作用,纳米管分子轨道的直接空间可视化以及氮掺杂纳米管的特性进行实验研究的报告损耗光谱法。

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