Structural Parameter of Orientational Order to Predict the Boson Vibrational Anomaly in Glasses
文献类型：期刊论文
| 作者 | Yang J ; Wang YJ(王云江); Ma E; Zaccone A; Dai LH(戴兰宏); Jiang MQ(蒋敏强)
|
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2019-01-04 |
| 卷号 | 122期号:1页码:AR15501 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.122.015501 |
| 英文摘要 | It has so far remained a major challenge to quantitatively predict the boson peak, a THz vibrational anomaly universal for glasses, from features in the amorphous structure. Using molecular dynamics simulations of amodel Cu50Zr50 glass, we decompose the boson peak to contributions from atoms residing in different types of Voronoi polyhedra. We then introduce a microscopic structural parameter to depict the "orientational order," using the vector pointing from the center atom to the farthest vertex of its Voronoi coordination polyhedron. This order parameter represents the most probable direction of transverse vibration at low frequencies. Its magnitude scales linearly with the boson peak intensity, and its spatial distribution accounts for the quasilocalized modes. This correlation is shown to be universal for different types of glasses. |
| 分类号 | 一类 |
| WOS关键词 | LIGHT-SCATTERING ; SIMULATION ; LIQUID ; PEAK ; DYNAMICS ; PHONONS |
| WOS研究方向 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000455065000007 |
| 资助机构 | NSFC [11522221, 11790292, 11672299] ; Strategic Priority Research Program [XDB22040303] ; Key Research Program of Frontier Sciences [QYZDJSSW-JSC011] ; Youth Innovation Promotion Association of CAS [2017025] ; US-NSF-DMR [1505621] |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/78429]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.{Yang, J、Wang, Yun-Jiang、Dai, LH、Jiang, MQ} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.{Yang, J、Wang, Yun-Jiang、Dai, LH、Jiang, MQ} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 3.{Ma, E} Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA 4.{Zaccone, A} Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB2 3RA, England 5.{Zaccone, A} Univ Cambridge, Cavendish Lab, Cambridge CB3 9HE, England 6.{Zaccone, A} Univ Milan, Dept Phys, Via Celoria 16, I-20133 Milan, Italy |
| 推荐引用方式 GB/T 7714 | Yang J,Wang YJ,Ma E,et al. Structural Parameter of Orientational Order to Predict the Boson Vibrational Anomaly in Glasses[J]. PHYSICAL REVIEW LETTERS,2019,122(1):AR15501. |
| APA | Yang J,王云江,Ma E,Zaccone A,戴兰宏,&蒋敏强.(2019).Structural Parameter of Orientational Order to Predict the Boson Vibrational Anomaly in Glasses.PHYSICAL REVIEW LETTERS,122(1),AR15501. |
| MLA | Yang J,et al."Structural Parameter of Orientational Order to Predict the Boson Vibrational Anomaly in Glasses".PHYSICAL REVIEW LETTERS 122.1(2019):AR15501. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。