Evolution of surface morphology and electronic structure of few layer graphene after low energy Ar ion irradiation

S. H. Al-Harthi, A. Karaa, T. Hysen, M. Elzain, A. T. Al-Hinai, M. T Z Myint

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Abstract

We report on co-existing dual anisotropy ripple formation, sp bonding transformation, and variation in the delocalized π electron system in 1 keV Ar+ ion irradiated few-layer graphene surfaces. Ripples in directions, perpendicular and parallel to the ion beam were found. The irradiation effect and the transition from the sp2-bonding to sp 3-hybridized state were analyzed from the deconvolution of the C (1s) peak and from the shape of the derivative of the Auger transition spectra. The results suggest a plausible mechanism for tailoring of few-layer graphene electronic band structure with interlayer coupling tuned by the ion irradiation.

Original languageEnglish
Article number213107
JournalApplied Physics Letters
Volume101
Issue number21
DOIs
Publication statusPublished - Nov 19 2012

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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