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代替タイトル: Extended Mermin Method for Calculating the Electron Inelastic Mean Free Path

説明:

We propose an improved method for calculating electron inelastic mean free paths (IMFPs) in solids from experimental energy-loss functions (ELFs) based on the Mermin dielectric function. The “extended Mermin” method is much simpler over a wide energy range than the traditional approach. We employ negative oscillators to obtain accurate ELFs; these naturally preserve two important sum rules when extending to infinite momentum transfer. Excellent agreement is found between calculated IMFPs for Cu and experimental measurements from elastic peak electron spectroscopy. Notably improved fits to x-ray absorption fine structure measurements of Cu and Mo at low energy illustrate the method’s strength.

権利情報:

• In Copyright
  

キーワード: inelastic mean free path, Mermin method

刊行年月日: 2014-08-07

出版者: American Physical Society (APS)

掲載誌:

• PHYSICAL REVIEW LETTERS (ISSN: 00319007) vol. 113 issue. 6 p. 63201-63201

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.3879

公開URL: https://doi.org/10.1103/PhysRevLett.113.063201

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更新時刻: 2024-01-05 22:13:51 +0900

MDRでの公開時刻: 2023-04-10 16:00:29 +0900