Determination of Optical Properties of Solids from Reflection Electron Energy Loss Spectroscopy Spectra

被引：0

作者：

Tokesi, K. ^{[1
]}

Li, Z. ^{[2
]}

Zhou, X. H. ^{[2
]}

Gong, J. M. ^{[2
]}

Zeng, R. G. ^{[3
]}

Ding, Z. J. ^{[2
]}

机构：

[1] Inst Nucl Res Atomk, Debrecen, Hungary

[2] Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China

[3] China Acad Engn Phys, Inst Mat, POB 9071, Jian you 621907, Sichuan, Peoples R China

来源：

JOURNAL OF SURFACE INVESTIGATION | 2024年 / 18卷 / 04期

关键词：

reverse Monte Carlo; reflection electron energy loss spectroscopy; optical property; MEAN-FREE-PATH; MONTE-CARLO; SCATTERING; MODEL;

D O I：

10.1134/S1027451024700575

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present high precision determination of electron energy loss functions and thereby the optical constants, n and k, of solids from the measured, high energy resolution reflection electron energy-loss spectroscopy (REELS) spectra, covering the spectral energy range from visible to vacuum ultraviolet. The calculations are based on our recently developed reverse Monte Carlo (RMC) method. The RMC method combines a Monte Carlo modelling of electron transportation for REELS spectrum simulation, including both the elastic and inelastic collisions, with a Markov chain Monte Carlo calculation of parameterized energy loss function, Im [-1/epsilon(omega)]. We found that our calculated optical data of elements fulfill the sum rules with very high accuracy; therefore, the use of this calculated optical data in material science and surface analysis is highly recommended for further applications.

引用

页码：864 / 873

页数：10

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