Circular dichroism in the angular distribution of core photoelectrons from Si(001): A photoelectron-diffraction analysis

A. P. Kaduwela, H. Xiao, S. Thevuthasan, C. S. Fadley, M. A. Van Hove

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Abstract

Circular dichroism has by now been observed experimentally in the angular distributions of core photoelectrons from both adsorbed molecules and atoms in single-crystal substrates. Photoelectron-diffraction theory provides a general method for predicting and analyzing such effects, as we demonstrate here by applying it to such dichroism in a nonmagnetic single crystal: Si 2s and 2p emission from Si(001), as studied experimentally by Daimon et al. [Jpn. J. Appl. Phys. 32, L1480 (1993)]. Our calculations correctly predict the apparent rotation of certain major diffraction features with right and left circularly polarized light, and also provide a more quantitative approach to analyzing such data than a previously proposed model based upon considerations of forward-scattering effects in photoelectron excitation.

Original languageEnglish
Pages (from-to)14927-14934
Number of pages8
JournalPhysical Review B
Volume52
Issue number20
DOIs
Publication statusPublished - 1995
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

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