Optical properties of graphene in external fields

Y. H. Chiu, Y. C. Ou, Min-Fa Lin

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The generalized tight-binding model, with the exact diagonalization method, is developed to investigate optical properties of graphene in five kinds of external fields. The quite large Hamiltonian matrix is transferred into the band-like one by the rearrangement of many basis functions; furthermore, the spatial distributions of wave functions on distinct sublattices are utilized to largely reduce the numerical computation time. The external fields have a strong influence on the number, intensity, frequency, structure, and the selection rule of absorption peaks. The optical spectra in a uniform magnetic field exhibit plentiful symmetric absorption peaks and obey a specific selection rule. However, there are many asymmetric peaks and extra selection rules under the modulated electric field, the modulated magnetic field, the composite electric and magnetic fields, and the composite magnetic fields.

Original languageEnglish
Title of host publicationGraphene Science Handbook
Subtitle of host publicationElectrical and Optical Properties
PublisherCRC Press
Pages469-488
Number of pages20
ISBN (Electronic)9781466591325
ISBN (Print)9781466591318
Publication statusPublished - 2016 Apr 27

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

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  • Cite this

    Chiu, Y. H., Ou, Y. C., & Lin, M-F. (2016). Optical properties of graphene in external fields. In Graphene Science Handbook: Electrical and Optical Properties (pp. 469-488). CRC Press.