The Magic Angle 'Mystery' in Electron Energy Loss Spectroscopy: Relativistic and Dielectric Corrections

Autor:	Sorini, A. P., Rehr, J. J., Levine, Z. H.
Rok vydání:	2007
Předmět:	Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.77.115126
Popis:	Recently it has been demonstrated that a careful treatment of both longitudinal and transverse matrix elements in electron energy loss spectra can explain the mystery of relativistic effects on the {\it magic angle}. Here we show that there is an additional correction of order $(Z\alpha)^2$ where $Z$ is the atomic number and $\alpha$ the fine structure constant, which is not necessarily small for heavy elements. Moreover, we suggest that macroscopic electrodynamic effects can give further corrections which can break the sample-independence of the magic angle. Comment: 10 pages (double column), 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0712.0843 Zobrazit plný text záznamu View this record from Arxiv