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DOI | 10.1126/science.aar2711 |
Observation of chiral phonons | |
Zhu, Hanyu1,2; Yi, Jun1; Li, Ming-Yang3; Xiao, Jun1; Zhang, Lifa4; Yang, Chih-Wen3; Kaindl, Robert A.2; Li, Lain-Jong3; Wang, Yuan1,2; Zhang, Xiang1,2 | |
2018-02-02 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 359期号:6375页码:579-581 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Saudi Arabia; Peoples R China |
英文摘要 | Chirality reveals symmetry breaking of the fundamental interaction of elementary particles. In condensed matter, for example, the chirality of electrons governs many unconventional transport phenomena such as the quantum Hall effect. Here we show that phonons can exhibit intrinsic chirality in monolayer tungsten diselenide. The broken inversion symmetry of the lattice lifts the degeneracy of clockwise and counterclockwise phonon modes at the corners of the Brillouin zone. We identified the phonons by the intervalley transfer of holes through hole-phonon interactions during the indirect infrared absorption, and we confirmed their chirality by the infrared circular dichroism arising from pseudoangular momentum conservation. The chiral phonons are important for electron-phonon coupling in solids, phonon-driven topological states, and energy-efficient information processing. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423795800043 |
WOS关键词 | EXCITON FORMATION ; MONOLAYER WSE2 ; SCATTERING ; MOS2 ; REALIZATION ; STATES ; MODEL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/197894 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Calif Berkeley, Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA; 2.Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA; 3.King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia; 4.Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhu, Hanyu,Yi, Jun,Li, Ming-Yang,et al. Observation of chiral phonons[J]. SCIENCE,2018,359(6375):579-581. |
APA | Zhu, Hanyu.,Yi, Jun.,Li, Ming-Yang.,Xiao, Jun.,Zhang, Lifa.,...&Zhang, Xiang.(2018).Observation of chiral phonons.SCIENCE,359(6375),579-581. |
MLA | Zhu, Hanyu,et al."Observation of chiral phonons".SCIENCE 359.6375(2018):579-581. |
条目包含的文件 | 条目无相关文件。 |
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