Absolute determination of optical constants by reflection electron energy loss spectroscopy

被引：34
|
作者：
Xu, H. [1 ,2 ,3 ]
Da, B. [4 ]
Toth, J. [5 ]
Tokesi, K. [5 ,6 ]
Ding, Z. J. [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Key Lab Strongly Coupled Quantum Matter Phys, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
[3] Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China
[4] Natl Inst Mat Sci, Ctr Mat Res Informat Integrat, Tsukuba, Ibaraki 3050047, Japan
[5] Hungarian Acad Sci ATOMKI, Inst Nucl Res, POB 51, Debrecen, Hungary
[6] ELI HU Nonprofit Ltd, ELI ALPS, Dugon Ter 13, H-6720 Szeged, Hungary
来源：
PHYSICAL REVIEW B | 2017年 / 95卷 / 19期
基金：
匈牙利科学研究基金会; 中国国家自然科学基金;
关键词：
MEAN FREE PATHS; SURFACE EXCITATION; QUANTITATIVE-ANALYSIS; SCATTERING DATA; LOSS SPECTRA; SELF-ENERGY; PHOTOELECTRONS; METALS; REELS; SIO2;
D O I：
10.1103/PhysRevB.95.195417
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present an absolute extraction method of optical constants of metal from the measured reflection electron energy loss spectroscopy spectra with the help of a recently developed reverse Monte Carlo technique. The method is based on a direct physical modeling of electron transportation with an optimization procedure of the energy loss function (ELF). The optical constants and the electron inelastic mean free path were obtained after verifying the accuracy of the derived ELF with the f- and ps-sum rules. This approach provides a valid and universal tool to investigate intrinsic properties of metals by using the electron energy loss spectroscopy technique.
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页数：7
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