Phonon and structural changes in deformed Bernal stacked bilayer graphene

Details Phonon and structural changes in deformed Bernal stacked bilayer graphene Phonon and structural changes in deformed Bernal stacked bilayer graphene

2012-02-08

arxiv.org/abs/1202.1648v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

21 pages, 7 figures

Scientific paper

We present the first Raman spectroscopic study of Bernal bilayer graphene flakes under uniaxial tension. Apart from a purely mechanical behavior in flake regions where both layers are strained evenly, certain effects stem from inhomogeneous stress distribution across the layers. These phenomena such as the removal of inversion symmetry in bilayer graphene may have important implications in the band-gap engineering providing an alternative route to induce the formation of a band-gap.

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