Effect of low-frequency optical phonons on the thermal conductivity of 2H molybdenum disulfide
文献类型：期刊论文
| 作者 | Dong, Zuo-Yuan4,5; Zhou, Yan4; Chen, Xin-Qian5; Li, Wei-Jian4; Cao, Zi-Yu4; Luo, Chen5; Zhong, Guo-Hua2,3; Peng, Qing1,3 ; Wu, Xing5; Chen, Xiao-Jia3,4
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2022-05-03 |
| 卷号 | 105期号:18页码:10 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.105.184301 |
| 通讯作者 | Peng, Qing(pengqing@hit.edu.cn) |
| 英文摘要 | 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. |
| WOS关键词 | RAMAN-SPECTRA ; MOS2 ; ANHARMONICITY ; TEMPERATURE ; MONOLAYER ; PRESSURE |
| 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] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000804951600003 |
| 资助机构 | 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 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/89519]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Peng, Qing |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Shenzhen Inst Adv Technol, Ctr Photon Informat & Energy Mat, Shenzhen 518055, Peoples R China 3.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China 4.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China 5.East China Normal Univ, Sch Commun & Elect Engn, Shanghai 200241, 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. |
入库方式： OAI收割
来源：力学研究所
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