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Dielectric Theory of High Resolution Electron Energy Loss Spectroscopy
이종현,이명복,이종희 경북대학교 전자기술연구소 2001 電子技術硏究誌 Vol.22 No.1
The dielectric theory (DT) of high resolution electron energy loss spectroscopy (HREELS) in the specular reflection geometry is reviewed to discuss both the characteristic feature of the HREEL spectra and how to better reproduce the experimental data. In terms of effective dielectric function of the system, a much used to calculate the vibrational spectra of the bulk and thin crystalline Al₂O₃ films on metal substrates. In order to give much mopre satisfactory explanation of some typical HREEL spectra, a theoretical model based on the Thomas-Fermi screening length is proposed and discussed.