Symmetry-selected electron-energy-loss scattering in diamond

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Abstract

Inelastic electron scattering using a two-beam channeling condition is used for the first time to create excitations having selectable even or odd symmetry relative to an atom column. The method is first established using plasmon and interband scattering in diamond. Next, for the carbon 1s absorption edge, scattering to modes having odd symmetry gives a strong exciton peak. Scattering to modes having even symmetry results in a depressed edge having no exciton peak in evidence.

Original languageEnglish (US)
Pages (from-to)1822-1825
Number of pages4
JournalPhysical review letters
Volume70
Issue number12
DOIs
StatePublished - Jan 1 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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