One-dimensional energy dispersion of single-walled carbon nanotubes by resonant electron scattering.
One-dimensional energy dispersion of single-walled carbon nanotubes by resonant electron scattering.
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通过共振电子散射实现单壁碳纳米管的一维能量色散。
DOI：
10.1103/physrevlett.88.066804
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发表时间：
2001
影响因子：
8.6
通讯作者：
Charles M. Lieber
中科院分区：
文献类型：
--
作者：
O. Min;Jinlin Huang;Charles M. Lieber
我们用低温扫描隧道显微镜表征了单壁碳纳米管费米能级附近的能带色散。分析能量依赖的驻波振荡，这是由于量子干涉的电子共振散射的缺陷，产生一个线性的能量色散E（F）附近，并指出宇称散射扶手椅单壁碳纳米管的重要性。此外，这些数据提供的紧束缚重叠积分和费米波矢量的值，在良好的协议与以前的工作，但表明，电子相干长度大大缩短。
We characterized the energy band dispersion near the Fermi level in single-walled carbon nanotubes using low-temperature scanning tunneling microscopy. Analysis of energy-dependent standing wave oscillations, which result from quantum interference of electrons resonantly scattered by defects, yields a linear energy dispersion near E(F), and indicates the importance of parity in scattering for armchair single-walled carbon nanotubes. Additionally, these data provide values of the tight-binding overlap integral and Fermi wave vector, in good agreement with previous work, but indicate that the electron coherence length is substantially shortened.