Universal correlation between boson peak and quasi-localized modes in solids
文献类型：期刊论文
| 作者 | Ding G(丁淦)2; Duan J(段军)2 ; Cai SL(蔡松林)2; Dai LH(戴兰宏)1,2; Jiang MQ(蒋敏强)1,2
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| 刊名 | JOURNAL OF NON-CRYSTALLINE SOLIDS
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| 出版日期 | 2025-10-15 |
| 卷号 | 666页码:6 |
| 关键词 | Debye model Low-temperature heat capacity Boson peak Soft potential model Quasilocalized modes |
| ISSN号 | 0022-3093 |
| DOI | 10.1016/j.jnoncrysol.2025.123668 |
| 通讯作者 | Jiang, M. Q.(mqjiang@imech.ac.cn) |
| 英文摘要 | The low-temperature specific heat capacity Cph of ideal crystals can be effectively described by the classical Debye T3 law. However, in amorphous solids and defective crystals, the reduced phonon heat capacity, Cph/T3, consistently deviates from the Debye model, exhibiting the well-known non-Debye excess anomaly, namely the boson peak (BP). In this work, we systematically study the low-temperature heat capacity Cp across a wide range of solids, finding that Cp can be accurately described by the soft potential model. The Cph/T3 of these solids begins to deviate from the Debye prediction near the characteristic temperature TC and displays a pronounced excess hump at TBP, which is the characteristic temperature of BP. We find that the reduced BP in both glasses and crystals exhibits a universal behavior, which can be described by an empirical function Delta*. Furthermore, a linear correlation between TC and TBP is observed among solids regardless of their topology, which reveals a universal connection between the BP and quasilocalized modes in solids. The result provides experimental support for the soft potential model, which may underpin the explanation of low-temperature anomalies and the formation of the BP in solids. |
| 分类号 | 二类/Q1 |
| WOS关键词 | TEMPERATURE HEAT-CAPACITY ; THERMAL-CONDUCTIVITY ; GLASSES ; SCATTERING ; ANOMALIES |
| 资助项目 | National Outstanding Youth Science Fund Project of National Natural Science Foundation of China (NSFC) ; NSFC[12302497] ; NSFC[12072327] ; CAS Project for Young Scientists in Basic Research ; China Postdoctoral Science Foundation ; [12125206] ; [11988102] ; [YSBR-096] ; [2023M743603] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001504845000002 |
| 资助机构 | National Outstanding Youth Science Fund Project of National Natural Science Foundation of China (NSFC) ; NSFC ; CAS Project for Young Scientists in Basic Research ; China Postdoctoral Science Foundation |
| 其他责任者 | 蒋敏强 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101805]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Ding G,Duan J,Cai SL,et al. Universal correlation between boson peak and quasi-localized modes in solids[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2025,666:6. |
| APA | 丁淦,段军,蔡松林,戴兰宏,&蒋敏强.(2025).Universal correlation between boson peak and quasi-localized modes in solids.JOURNAL OF NON-CRYSTALLINE SOLIDS,666,6. |
| MLA | 丁淦,et al."Universal correlation between boson peak and quasi-localized modes in solids".JOURNAL OF NON-CRYSTALLINE SOLIDS 666(2025):6. |
入库方式： OAI收割
来源：力学研究所
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