Observation of chiral phonons
Abstract
Chirality is associated with the breaking of symmetry, often described as left- or right-handed behavior. Such asymmetry can be seen, for example, in the electronic responses of particular materials or the reactions between particular chemical species. Zhu et al. observed a chiral phonon mode in a monolayer of the transition metal dichalcogenide WSe 2 , detected spectroscopically as the circular dichroism of the phonon-assisted transition of holes. Phonon chirality could be used to control the electron-phonon coupling and/or the phonon-driven topological states of solids.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 02, 2018
- Source ID
- 10.1126/science.aar2711
Entities
People
- Chih-wen Yang
- Hanyu Zhu
- Jun Xiao
- Jun Yi
- Lain-Jong Li
- Lifa Zhang
- Ming-Yang Li
- Robert A Kaindl
- Xiang Zhang
- Yuan Wang
Organizations
- China Scholarship Council
- King Abdullah University of Science and Technology
- Lawrence Berkeley National Laboratory
- Nanjing Normal University
- National Natural Science Foundation of China
- Office of Naval Research
- United States Department of Energy