Linking chiral indices and transport properties of double-walled carbon nanotubes.
Linking chiral indices and transport properties of double-walled carbon nanotubes.
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DOI：
10.1103/physrevlett.89.155501
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发表时间：
2002-09
影响因子：
8.6
通讯作者：
Mathieu Kociak;Kazu Suenaga;K. Hirahara;Y. Saito;Takanori Nakahira;Sumio Iijima
中科院分区：
文献类型：
--
作者：
Mathieu Kociak;Kazu Suenaga;K. Hirahara;Y. Saito;Takanori Nakahira;Sumio Iijima
我们在透射电子显微镜（TEM）下对单个双壁碳纳米管（DWNT）进行了原位传输测量。采用选择面积电子衍射法，通过与理论的仔细比较，确定了构成DWNTs的两个管的手性指数。我们讨论了两管在半填充状态下有间隙并在费米能级上显示出有限离域态密度的低密度纳米管的情况。手性指数的精确测定应该可以在任何输运测量实验中使用允许TEM表征的样品。
We performed in situ transport measurements in a transmission-electron microscope (TEM) on individual double-walled carbon nanotubes (DWNT). Using selected-area electron diffraction, the chiral indices of the two tubes constituting the DWNTs were determined through careful comparison with theory. We discuss the case of a DWNT whose two tubes have a gap at half filling and show a finite density of delocalized state at the Fermi level. The exact determination of chiral indices should be reachable in any transport-measurement experiment with samples that allow TEM characterization.