Chin. Phys. Lett.  2016, Vol. 33 Issue (03): 037101    DOI: 10.1088/0256-307X/33/3/037101
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Splitting Phenomenon Induced by Magnetic Field in Metallic Carbon Nanotubes
Gui-Li Yu1**, Yong-Lei Jia2, Gang Tang1
1Department of Physics, China University of Mining and Technology, Xuzhou 221116
2College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000
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Gui-Li Yu, Yong-Lei Jia, Gang Tang 2016 Chin. Phys. Lett. 33 037101
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Abstract In the framework of the tight-binding model, the excitons states and linear absorption spectra are calculated in the metallic single-walled carbon nanotubes, with the axial magnetic field applied. From our calculations, it is found that for the $M_{11}$ and $M_{22}$ transitions, the exciton states are split into four separate column states by the applied magnetic field due to the symmetry breaking. More interesting is that the splitting can be directly reflected from the linear absorption spectra, which are dominated by four main absorption peaks. In addition, the splitting with increasing the axial magnetic field is also calculated, which increases linearly with the applied magnetic field. The obtained results are expected to be detected by the future experiments.
Received: 28 September 2015      Published: 31 March 2016
PACS:  71.35.-y (Excitons and related phenomena)  
  71.15.Qe (Excited states: methodology)  
  73.22.-f (Electronic structure of nanoscale materials and related systems)  
  78.67.Ch (Nanotubes)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/33/3/037101       OR      https://cpl.iphy.ac.cn/Y2016/V33/I03/037101
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Gui-Li Yu
Yong-Lei Jia
Gang Tang
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