Secondary emission from W(1 1 0) excited by spin-polarized electrons

Sergey Samarin, O.M. Artamonov, Anthony Sergeant, James Williams

    Research output: Contribution to journalArticle

    12 Citations (Scopus)

    Abstract

    Energy distribution curves (EDC) of secondary electrons from W(I 10) were measured for spin-up (I) and spin-down (I-) polarization of the incident beam. The intensity asymmetry, defined as A = (I+ - I-)/(I+ + I-), for a certain experimental geometry was measured as large as 7%. This asymmetry was explained in terms of a "spin-filter" effect. The model assumes that the secondary electrons excited by spin-polarized primary electrons are spin-polarized inside the solid. On the way to the vacuum they undergo spin-orbit interaction on the surface barrier that provides the spin-dependent and energy selective transmission through the surface. (c) 2005 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)166-174
    JournalSurface Science
    Volume579
    Issue number2-3
    DOIs
    Publication statusPublished - 2005

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