Acoustic phonon excitation in gold probed by time-resolved photoemission electron microscopy

被引：1

作者：

Jiang, Pengzuo ^{[1
,2
]}

Zhang, Linfeng ^{[1
,2
]}

Zheng, Wei ^{[1
,2
]}

Wang, Yang ^{[1
,2
]}

Liu, Yu ^{[1
,2
]}

Xiao, Jingying ^{[1
,2
]}

Li, Yaolong ^{[1
,2
]}

Medvedev, Nikita ^{[3
,4
]}

Ischenko, Anatoly ^{[5
]}

Kang, Zexin ^{[1
,2
]}

Liu, Yunquan ^{[1
,2
,6
,7
]}

Li, Zheng ^{[1
,2
,6
,7
]}

Wu, Chengyin ^{[1
,2
,6
,7
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Sch Phys, Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

[3] Czech Acad Sci, Inst Phys, Na Slovance 1999-2, Prague 8, Czech Republic

[4] Czech Acad Sci, Inst Plasma Phys, Za Slovankou 3, Prague 8, Czech Republic

[5] RTU MIREA Russian Technol Univ, Lomonosov Inst Fine Chem Technol, Vernadskii Ave 86, Moscow 119571, Russia

[6] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China

[7] Peking Univ, Yangtze Delta Inst Optoelect, Nantong 226010, Jiangsu, Peoples R China

来源：

JOURNAL OF CHEMICAL PHYSICS | 2024年 / 161卷 / 02期

基金：

北京市自然科学基金; 国家重点研发计划; 中国国家自然科学基金;

关键词：

OPTICAL PHONONS; TEMPERATURE; RADIATION; EMISSION; FIELD; AU;

D O I：

10.1063/5.0213237

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electron-phonon coupling is an important energy transfer mechanism in solids after ultrafast laser excitation. In this study, we present an extreme ultraviolet (EUV) and infrared (IR) pump-probe photoemission experiment to investigate the electron-phonon coupling in nonequilibrium gold. The energy of IR-laser-emitted photoelectrons is shifted due to the EUV photoemission and oscillates with a similar to 4THz frequency. Such oscillation is considered as the effective excitation of the longitudinal acoustic phonon mode in gold through the spectral-dependent electron-phonon coupling. Our study showcases the capability of time-resolved photoemission electron microscopy to monitor the non-equilibrium lattice vibrations with ultrahigh spatial and temporal resolution.

引用

页数：7

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