Theoretical 2D Raman band of strained graphene

Valentin N. Popov, P. Lambin

    Research output: Contribution to journalArticlepeer-review


    We study the 2D Raman band of in-plane uniaxially strained graphene within a nonorthogonal tight-binding model. At nonzero strain, the obtained 2D band splits into two subbands at strain angles 0 and 30 or into three subbands at intermediate angles. The evolution of the 2D subbands is calculated systematically in the range of the accessible strains from -1% to 3% and for the commonly used laser photon energy from 1.5 to 3.0 eV. The strain rate and dispersion rate of the 2D subbands are derived and tabulated. In particular, these two quantities show large variations up to 50%. The results on the 2D subbands can be used for detecting and monitoring strain in graphene for nanoelectronics applications.
    Original languageEnglish
    Article number155425
    Number of pages7
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Issue number15
    Publication statusPublished - 19 Apr 2013

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