期刊
NATURE COMMUNICATIONS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms8044
关键词
-
资金
- SciDAC Program on Excited State Phenomena in Energy Materials - US Department of Energy, Office of Basic Energy Sciences
- Advanced Scientific Computing Research at Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]
- National Science Foundation [DMR 10-1006184]
- Office of Science, Office of Basic Energy Sciences
- US Department of Energy [DE-AC02-05CH11231]
- Office of Science of the US Department of Energy
Hot carriers (HC) generated by surface plasmon polaritons (SPPs) in noble metals are promising for application in optoelectronics, plasmonics and renewable energy. However, existing models fail to explain key quantitative details of SPP-to-HC conversion experiments. Here we develop a quantum mechanical framework and apply first-principles calculations to study the energy distribution and scattering processes of HCs generated by SPPs in Au and Ag. We find that the relative positions of the s and d bands of noble metals regulate the energy distribution and mean free path of the HCs, and that the electron-phonon interaction controls HC energy loss and transport. Our results prescribe optimal conditions for HC generation and extraction, and invalidate previously employed free-electron-like models. Our work combines density functional theory, GW and electron-phonon calculations to provide microscopic insight into HC generation and ultrafast dynamics in noble metals.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据