Acoustic and breathing phonon modes in bilayer graphene with Moiré patterns

Jin Wu Jiang, Bing Shen Wang, Timon Rabczuk

Research output: Contribution to journalArticle

17 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

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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