Elucidation of the electronic structure of semiconducting single-walled carbon nanotubes by electroabsorption spectroscopy.
Elucidation of the electronic structure of semiconducting single-walled carbon nanotubes by electroabsorption spectroscopy.
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通过电吸收光谱阐明半导体单壁碳纳米管的电子结构。
DOI：
10.1103/physrevlett.98.166805
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发表时间：
2007
影响因子：
8.6
通讯作者：
S. Mazumdar
中科院分区：
文献类型：
--
作者：
Hongbo Zhao;S. Mazumdar
我们报告了半导体单壁碳纳米管的电吸收的基准计算，为在这些系统上进行电吸收测量提供了动力。我们表明，电吸收可以检测到不同的能量流形的连续带。因此，直接测定较高流形中激子的结合能成为可能。我们还发现，电吸收可以提供第二激子和最低连续带态之间的Fano型耦合的证据。
We report benchmark calculations of electroabsorption in semiconducting single-walled carbon nanotubes that provide motivation to perform electroabsorption measurement on these systems. We show that electroabsorption can detect the continuum bands in different energy manifolds. Direct determination of the binding energies of excitons in higher manifolds thereby becomes possible. We also find that electroabsorption can provide evidence for Fano-type coupling between the second exciton and the lowest continuum band states.