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Peter Dowben Publications
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Document Type
Article
Date of this Version
March 2002
Abstract
The composition in the surface region of the Heusler alloy NiMnSb has been studied using angle-resolved X-ray photoemission spectroscopy, low-energy electron diffraction and spin-polarized inverse photoemission. The results are consistent with a generally Mn-Sb terminal layer, though the surface composition is very sensitive to preparation. The surface composition has a critical influence on the polarization near the Fermi level in spin-polarized inverse photoemission. Under some conditions, the polarization at the Fermi level for normal incidence inverse photoemission can reach values very close to 100% above background.
Comments
Published by EDP Sciences; Europhysics Letters 49 (2000) 624-630. Copyright 2000. Permission to use.