Quantum-mechanical simulation of attosecond streaked photoemission from Mg-covered W(110) surfaces

29th International Conference on Photonic, Electronic, and Atomic Collisions

Liao, Qing^1 ; Thumm, Uwe^1

Department of Physics, Kansas State University, Manhattan

KS

66506, United States^1

关键词: Electron mean free path;    Energy dependent;    Extreme ultraviolet pulse;    Metal surfaces;    Photo-electron emission;    Photoelectron energy;    Quantum mechanical model;    Quantum mechanical simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/10/102002/pdf
DOI  :  10.1088/1742-6596/635/10/102002

来源: IOP

【 摘 要 】

We apply a quantum-mechanical model to simulate infrared-streaked photoelectron emission by an ultrashort extreme ultraviolet pulse from adsorbate-covered metal surfaces. Incorporating effects of energy- dependent electron mean-free paths, the properties of initial states, photoelectron energy dispersion, and the screening of the streaking field, this model is able to reproduce recently measured photoelectron spectrograms and adsorbate-thickness-dependent photoemission time delays.