Studying time-dependent contribution of hot-electron versus lattice-induced thermal-expansion response in ultra-Thin Au-nanofilms

Peng Jui Wang, Chih Chiang Shen, Kuan Yu Chou, Mu Han Ho, Jinn Kong Sheu, Chi Kuang Sun

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

Through the femtosecond-Time-resolved study of photoacoustic pulse generation in ultra-Thin gold nanofilms, we observed a time delay of 0.5-0.7 ps in the formation of thermal-expansion pulses after photoexcitation. Our observation indicates that lattice anharmonicity dominates over hot electron pressure in the thermal expansion of Au nanofilms under ultrashort-pulsed photoexcitation.

原文English
文章編號154101
期刊Applied Physics Letters
117
發行號15
DOIs
出版狀態Published - 2020 十月 12

All Science Journal Classification (ASJC) codes

  • 物理與天文學(雜項)

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