Acoustic and breathing phonon modes in bilayer graphene with Moiré patterns

Jin Wu Jiang; Bing Shen Wang; Timon Rabczuk

doi:10.1063/1.4735246

Acoustic and breathing phonon modes in bilayer graphene with Moiré patterns

Jin Wu Jiang, Bing Shen Wang, Timon Rabczuk

Research output: Contribution to journal › Article › peer-review

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 language	English
Article number	023113
Journal	Applied Physics Letters
Volume	101
Issue number	2
DOIs	https://doi.org/10.1063/1.4735246
Publication status	Published - 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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title = "Acoustic and breathing phonon modes in bilayer graphene with Moir{\'e} patterns",

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.",

author = "Jiang, {Jin Wu} and Wang, {Bing Shen} and Timon Rabczuk",

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AU - Jiang, Jin Wu

AU - Wang, Bing Shen

AU - Rabczuk, Timon

N1 - 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).

PY - 2012/7/9

Y1 - 2012/7/9

N2 - 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.

AB - 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.

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Acoustic and breathing phonon modes in bilayer graphene with Moiré patterns

Abstract

Bibliographical note

ASJC Scopus subject areas

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