| Effect of low-frequency optical phonons on the thermal conductivity of 2H molybdenum disulfide | |
| Dong, Zuo-Yuan1,2; Zhou, Yan2; Chen, Xin-Qian1; Li, Wei-Jian2; Cao, Zi-Yu2; Luo, Chen1; Zhong, Guo-Hua3,4; Peng Q(彭庆)3,5; Wu, Xing1; Chen, Xiao-Jia2,3 | |
| 通讯作者 | Peng, Qing(pengqing@hit.edu.cn) |
| 发表期刊 | PHYSICAL REVIEW B
 |
| 2022-05-03 | |
| 卷号 | 105期号:18页码:10 |
| ISSN | 2469-9950 |
| 摘要 | Phonon engineering is a novel and effective approach to tailor the thermal conductivity for the thermoelectric performance and heat dissipation. In general, the acoustic phonons rather than the optical phonons are dominant in heating carriers. Here we report an unprecedented large contribution, 47% overall, from the low-frequency optical phonons to the in-plane thermal conductivity in 2H molybdenum disulfide, revealed by low-wave-number high-pressure Raman technology assisted with first-principles calculations. The analysis of phonon dispersion curves and Gr??neisen parameters of individual phonon modes reveals that the large contribution originates in a joint effect of the large group velocity of low-frequency optical phonons and their strong anharmonic effects. The joint effect is continuously maintained when pressure increases, up to 20 GPa. Our work provides new insights into the optical phonon transport, paving the way for the phonon engineering and thermal management. |
| DOI | 10.1103/PhysRevB.105.184301 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000804951600003 |
| 关键词[WOS] | RAMAN-SPECTRA ; MOS2 ; ANHARMONICITY ; TEMPERATURE ; MONOLAYER ; PRESSURE |
| WOS研究方向 | Materials Science ; Physics |
| WOS类目 | Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| 资助项目 | Shenzhen Science and Technology Program at HIT[KQTD20200820113045081] ; Basic Research Program of Shenzhen at HIT[JCYJ20200109112810241] ; National Natural Science Foundation of China at ECNU[62074057] ; Projects of Science and Technology Commission of Shanghai Municipality at ECNU[19ZR1473800] ; National Key R&D Program of China at HPSTAR[2018YFA0305900] |
| 项目资助者 | Shenzhen Science and Technology Program at HIT ; Basic Research Program of Shenzhen at HIT ; National Natural Science Foundation of China at ECNU ; Projects of Science and Technology Commission of Shanghai Municipality at ECNU ; National Key R&D Program of China at HPSTAR |
| 论文分区 | 二类 |
| 力学所作者排名 | 1 |
| RpAuthor | Peng, Qing |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/89520 |
| 专题 | 非线性力学国家重点实验室 |
| 作者单位 | 1.East China Normal Univ, Sch Commun & Elect Engn, Shanghai 200241, Peoples R China; 2.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China; 3.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China; 4.Chinese Acad Sci, Shenzhen Inst Adv Technol, Ctr Photon Informat & Energy Mat, Shenzhen 518055, Peoples R China; 5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Zuo-Yuan,Zhou, Yan,Chen, Xin-Qian,et al. Effect of low-frequency optical phonons on the thermal conductivity of 2H molybdenum disulfide[J]. PHYSICAL REVIEW B,2022,105,18,:10. |
| APA | Dong, Zuo-Yuan.,Zhou, Yan.,Chen, Xin-Qian.,Li, Wei-Jian.,Cao, Zi-Yu.,...&Chen, Xiao-Jia.(2022).Effect of low-frequency optical phonons on the thermal conductivity of 2H molybdenum disulfide.PHYSICAL REVIEW B,105(18),10. |
| MLA | Dong, Zuo-Yuan,et al."Effect of low-frequency optical phonons on the thermal conductivity of 2H molybdenum disulfide".PHYSICAL REVIEW B 105.18(2022):10. |
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