| Phonon dynamics in 3D quasicrystals versus amorphous solids | |
Cao LL(曹琳莉)1,2; Zhao K(赵坤)1,2; Wang YJ(王云江)1,2
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| Corresponding Author | Wang, Yun-Jiang([email protected]) |
| Source Publication | JOURNAL OF APPLIED PHYSICS
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| 2025-02-07 | |
| Volume | 137Issue:5Pages:11 |
| ISSN | 0021-8979 |
| Abstract | Quasicrystals (QCs) possess a unique long-range quasi-periodic order distinct from both crystalline and amorphous solids. The vibrational properties of QCs remain poorly unexplored. Here, we employed classical molecular dynamics simulations to investigate the phonon dynamics of a 3D single-component icosahedral QC model and a Kob-Andersen (KA) glass model. By comparing the vibrational density of state (VDOS), phonon dispersion, and phonon lifetime, we elucidate the impact of structural order on the phonon dynamics. Although QC shows similar phonon dynamics to amorphous solid rather than crystals, our findings reveal significant differences between the two systems. The VDOS of the QC exhibits a double-peak feature and a "fake" boson peak compared to the KA glass. The phonon dispersion in the QC displays more pronounced elastic anisotropy, with well-defined transverse and longitudinal modes, unlike the more isotropic dispersion in the KA glass. Moreover, the correlation between the transverse phonon linewidth and the structure factor, observed in the KA glass, is absent in the QC. Phonon lifetimes in the QC are generally longer than in the KA glass, with a faster decay rate. This comparative study highlights the distinctive vibrational properties of 3D QCs, emphasizing the role of structural order in determining phonon behaviors in solids. |
| DOI | 10.1063/5.0245461 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001416711100001 |
| WOS Keyword | METALLIC GLASSES ; ATOMIC DYNAMICS ; MODES |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied |
| Funding Project | Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620103] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0510301] ; National Natural Science Foundation of China (NNSFC)[12472112] |
| Funding Organization | Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China (NNSFC) |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | 王云江 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/100069 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Cao LL,Zhao K,Wang YJ. Phonon dynamics in 3D quasicrystals versus amorphous solids[J]. JOURNAL OF APPLIED PHYSICS,2025,137,5,:11.Rp_Au:王云江 |
| APA | 曹琳莉,赵坤,&王云江.(2025).Phonon dynamics in 3D quasicrystals versus amorphous solids.JOURNAL OF APPLIED PHYSICS,137(5),11. |
| MLA | 曹琳莉,et al."Phonon dynamics in 3D quasicrystals versus amorphous solids".JOURNAL OF APPLIED PHYSICS 137.5(2025):11. |
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