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Influence of plural scattering on the quantitative determination of spin and orbital moments in electron magnetic chiral dichroism measurements
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SYSNO ASEP 0437604 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of plural scattering on the quantitative determination of spin and orbital moments in electron magnetic chiral dichroism measurements Author(s) Rusz, Ján (FZU-D)
Lidbaum, H. (SE)
Rubino, S. (SE)
Hjörvarsson, B. (SE)
Oppeneer, P.M. (SE)
Eriksson, O. (SE)
Leifer, K. (SE)Source Title Physical Review B - ISSN 1098-0121
Roč. 83, č. 13 (2011), "132402-1"-"132402-4"Number of pages 4 s. Language eng - English Country US - United States Keywords EMCD experiments Subject RIV BM - Solid Matter Physics ; Magnetism CEZ AV0Z10100521 - FZU-D (2005-2011) UT WOS 000289191200001 EID SCOPUS 79961091458 DOI https://doi.org/10.1103/PhysRevB.83.132402 Annotation Recent quantitative measurements of the orbital to spin magnetic moment ratio m(L)/m(S) in electron magnetic circular dichroism (EMCD) experiments have given a m(L)/m(S) ratio that is larger than commonly accepted values. We demonstrate here that plural scattering may noticeably influence the m(L)/m(S) ratio. An equation is derived which describes its influence as a function of the spectral integrals of the plasmon scattering region and zero-loss peak. The influence of the electron-plasmon scattering can be removed when electron energy-loss spectra of the ionization edge are deconvoluted by the low-loss signal. For a bcc-Fe sample we obtain m(L)/m(S) = 0.04 after plasmon removal. We conclude that the plural scattering should be considered when extracting quantitative information from EMCD measurements. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2015
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