Electronic properties of bilayer AA-stacked zigzag nanographene ribbons

S. L. Chang, C. H. Tsai, W. S. Su, S. C. Chen, M. F. Lin

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

First-principles calculations within the generalized gradient approximation are employed to calculate the electronic properties of the bilayer AA-stacked zigzag nanographene ribbon. The AFM-AFM configuration (antiferromagnetic and antiferromagnetic configurations for the intralayer and interlayer spin arrangements, respectively) is predicted to be the most stable system. The interlayer interactions alter the band structure such as the modulation of energy dispersions, the generation of new band-edge states, and the state degeneracy. The energy gap is inversely proportional to the ribbon width. As compared with the monolayer zigzag nanographene ribbon, the density of states exhibits more asymmetric peaks, and some peaks at low energy are enhanced due to the state degeneracy. These predicted results can be identified by scanning tunneling spectroscopy (STS) or the measurements of optical spectra.

原文English
頁(從 - 到)505-508
頁數4
期刊Diamond and Related Materials
20
發行號4
DOIs
出版狀態Published - 2011 四月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 化學 (全部)
  • 機械工業
  • 材料化學
  • 電氣與電子工程

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