Electronic band gaps and transport properties in graphene superlattices with one-dimensional periodic potentials of square barriers

Li Gang Wang*, Shi Yao ZHU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

153 Citations (Scopus)

Abstract

The electronic transport properties and band structures for the graphene-based one-dimensional (1D) superlattices with periodic potentials of square barriers are investigated. It is found that a new Dirac point is formed, which is exactly located at the energy which corresponds to the zero (volume) averaged wave number inside the 1D periodic potentials. The location of such a new Dirac point is robust against variations in the lattice constant, and it is only dependent on the ratio of widths of the potential barriers. The zero-averaged wave-number gap associated with the new Dirac point is insensitive to both the lattice constant and the structural disorder and the defect mode in the zero-averaged wave-number gap is weakly dependent on the incident angles of carriers.

Original languageEnglish
Article number205444
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number20
DOIs
Publication statusPublished - 27 May 2010

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Electronic band gaps and transport properties in graphene superlattices with one-dimensional periodic potentials of square barriers'. Together they form a unique fingerprint.

Cite this