| Correlation between vibrational anomalies and emergent anharmonicity of the local potential energy landscape in metallic glasses | |
Yang ZY(杨增宇) ; Wang YJ(王云江); Zaccone,Alessio
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| Corresponding Author | Wang, Yun-Jiang([email protected]) |
| Source Publication | PHYSICAL REVIEW B
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| 2022-01-12 | |
| Volume | 105Issue:1Pages:11 |
| ISSN | 2469-9950 |
| Abstract | The boson peak (BP) is a universal feature in the Raman and inelastic scattering spectra of both disordered and crystalline materials. Here, through a set of atomistically resolved characterizations of metallic glasses, we uncover a robust inverse proportionality between the intensity of the boson peak and the activation energy of excitations in the potential energy landscape (PEL). Larger boson peaks are linked with shallower basins and lower activation barriers and, consequently, with emergent anharmonic sectors of the PEL. Numerical evidence from atomistic simulations indicates that THz atomic vibrations contributing the most to the BP in atomic glasses are strongly correlated with such emergent anharmonicity of the PEL, as evidenced through very large values of the atomic- and mode-resolved Gruneisen parameter found for the atomic vibrations that constitute the BP. These results provide a direct bridge between the vibrational spectrum and the topology of the PEL in amorphous solids. |
| DOI | 10.1103/PhysRevB.105.014204 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000752506500001 |
| WOS Keyword | BOSON-PEAK ; COOPERATIVE MOTION ; RAMAN-SCATTERING ; DYNAMICS ; CRYSTALS ; SOUND ; CONDUCTIVITY ; ATTENUATION ; RELAXATION ; ELASTICITY |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| Funding Project | National Natural Science Foundation of China[12072344] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017025] ; U.S. Army Research Office[W911NF-19-2-0055] |
| Funding Organization | National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; U.S. Army Research Office |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Wang, Yun-Jiang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/88582 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Yang ZY,Wang YJ,Zaccone,Alessio. Correlation between vibrational anomalies and emergent anharmonicity of the local potential energy landscape in metallic glasses[J]. PHYSICAL REVIEW B,2022,105,1,:11.Rp_Au:Wang, Yun-Jiang |
| APA | 杨增宇,王云江,&Zaccone,Alessio.(2022).Correlation between vibrational anomalies and emergent anharmonicity of the local potential energy landscape in metallic glasses.PHYSICAL REVIEW B,105(1),11. |
| MLA | 杨增宇,et al."Correlation between vibrational anomalies and emergent anharmonicity of the local potential energy landscape in metallic glasses".PHYSICAL REVIEW B 105.1(2022):11. |
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| Jp2022FA557_2022_Cor（2143KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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