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

Abstract

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.

10 pages (double column), 6 figures

References in corpus (1)

• Ab initio calculations of mean free paths and stopping powers

Cited by in corpus (2)

• Many-body and QED effects in electron-atom inelastic scattering in EELS
• Electron Energy Loss Spectroscopy of oriented targets and magnetic transitions