Electronic properties of monolayer graphene in the presence of the uniform magnetic and modulated electric fields

Y. C. Ou, Y. H. Chiu, M. F. Lin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The influence of modulated electric fields on low-energy Landau levels (LLs) of single-layer graphene is investigated by the Peierls tight-binding model. Such fields strongly affect the electronic properties of LLs, i.e., they split the LLs into the parabolic bands, produce the extra band-edge states, break the state degeneracy, and increase the dimensionality. The extra band-edge states make the density of states (DOS) exhibits many pairs constructed by the two square-root divergent peaks. The energy spacing between the pair peaks is proportional to the electric field strength (V0), and the peak intensity displays an inverse proportion to V0. However, DOS is independent of the modulated period. Furthermore, the dependence of the peak frequency on the electric field strength is also discussed in detail. The predicted results could be verified by the experimental measurements.

Original languageEnglish
Pages (from-to)604-607
Number of pages4
JournalDiamond and Related Materials
Volume19
Issue number5-6
DOIs
Publication statusPublished - 2010 May 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Materials Chemistry
  • Electrical and Electronic Engineering

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