Observation of an underlying relativistic effect in the valence bands of Pt

We have measured the photoelectron spin polarization emitted by unpolarized UV radiation from the valence-bands of the well ordered Pt(0 0 1)-(5 × 1) surface and the disordered surface destroyed by Ar ions bombardment. Almost identical spin polarizations have been observed in both cases. This observ...

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Veröffentlicht in:Surface science 2007-12, Vol.601 (23), p.L127-L131
Hauptverfasser: Yu, S.-W., Tobin, J.G.
Format: Artikel
Sprache:eng
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Zusammenfassung:We have measured the photoelectron spin polarization emitted by unpolarized UV radiation from the valence-bands of the well ordered Pt(0 0 1)-(5 × 1) surface and the disordered surface destroyed by Ar ions bombardment. Almost identical spin polarizations have been observed in both cases. This observation suggests that the electron spin polarization in photoemission caused by unpolarized light is determined by a short-range order of atoms. This finding has an obvious implication that the electron spin polarization in photoemission caused by unpolarized light can be used to study the bulk electronic structure of the nonmagnetic materials.
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2007.07.034