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Acoustic and breathing phonon modes in bilayer graphene with Moire-acute patterns
- 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 observedThe 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.…
| Document Type: | Article |
|---|---|
| Author: | Jin-Wu Jiang, Bing-Shen Wang, Timon RabczukORCiDGND |
| DOI (Cite-Link): | https://doi.org/10.1063/1.4735246Cite-Link |
| Parent Title (English): | Applied Physics Letters |
| Language: | English |
| Date of Publication (online): | 2017/08/26 |
| Year of first Publication: | 2012 |
| Release Date: | 2017/08/26 |
| Publishing Institution: | Bauhaus-Universität Weimar |
| Institutes and partner institutions: | Fakultät Bauingenieurwesen / Institut für Strukturmechanik |
| GND Keyword: | Angewandte Mathematik; Strukturmechanik |
| Dewey Decimal Classification: | 600 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften |
| 500 Naturwissenschaften und Mathematik / 510 Mathematik / 519 Wahrscheinlichkeiten, angewandte Mathematik | |
| BKL-Classification: | 31 Mathematik / 31.80 Angewandte Mathematik |
| 50 Technik allgemein / 50.31 Technische Mechanik | |
| Licence (German): |  Copyright All Rights Reserved - only metadata |