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首页> 外文期刊>International journal of nanoscience >BAND STRUCTURES OF CARBON NANOTUBES WITH NANOSCALE PERIODIC PORES DEPENDING ON THEIR CIRCUMFERENCES
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BAND STRUCTURES OF CARBON NANOTUBES WITH NANOSCALE PERIODIC PORES DEPENDING ON THEIR CIRCUMFERENCES

机译：碳纳米管的带状结构，纳米级的周期性孔取决于它们的圆周

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摘要

We theoretically evaluate the electronic band structures in carbon nanotubes with nanoscale periodic pores with a tight-binding approximation of IT electrons, and demonstrate that band gaps of the carbon nanotubes with nanoscale periodic pores differ significantly from those of conventional carbon nanotubes. The band gaps of the carbon nanotubes with nanoscale periodic pores depend strongly on the size of pores and inter-pore distances. In some carbon nanotubes with nanoscale periodic pores, band gaps are constant as a function of their circumferences. In other ones, band gaps have the exact periodicity of three as a function of their circumferences. Those behaviors can be explained by taking properties of nanoscale periodic porous graphite into consideration. In some carbon nanotubes with relatively large nanoscale periodic pores, flat bands appear, which may cause singular properties about magnetism in one-dimensional porous carbon nanotubes.
机译：我们在理论上用IT电子的紧密结合近似评估具有纳米级周期性孔的碳纳米管中的电子能带结构，并证明具有纳米级周期性孔的碳纳米管的带隙与常规碳纳米管的带隙显着不同。具有纳米级周期性孔的碳纳米管的带隙在很大程度上取决于孔的大小和孔间距离。在一些具有纳米级周期性孔的碳纳米管中，带隙是其周长的函数恒定。在另一些情况下，带隙的精确周期是其周长的三。这些行为可以通过考虑纳米级周期性多孔石墨的性质来解释。在一些具有相对较大的纳米级周期性孔的碳纳米管中，会出现扁平带，这可能导致一维多孔碳纳米管中的磁性具有奇异特性。

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