Acoustic and breathing phonon modes in bilayer graphene with Moiré patterns

Jin Wu Jiang, Bing Shen Wang, Timon Rabczuk

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    29 Citations (Scopus)

    Abstract

    The lattice dynamics properties are investigated for twisting bilayer graphene. There are big jumps for the inter-layer potential at twisting angle θ 0 ° and 60°, implying the stability of Bernal-stacking and the instability of AA-stacking structures, while a long platform in [8,55]° indicates the ease of twisting bilayer graphene in this wide angle range. Significant frequency shifts are observed for the z breathing mode around θ 0 ° and 60°, while the frequency is a constant in a wide range [8,55]°. Using the z breathing mode, a mechanical nanoresonator is proposed to operate on a robust resonant frequency in terahertz range.

    Original languageEnglish
    Article number023113
    JournalApplied Physics Letters
    Volume101
    Issue number2
    DOIs
    Publication statusPublished - 2012 Jul 9

    Bibliographical note

    Funding Information:
    We thank Professor J.-S. Wang at NUS for helpful discussions. The work is supported in part by the Grant Research Foundation (DFG).

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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