Abstract
The magnetic properties, crystal structure, and topography at the (110) surface of the ferromagnetic half-Heusler alloy NiMnSb have been investigated by means of magneto-optical Kerr effect, spin-resolved appearance potential spectroscopy, low-energy electron diffraction, and atomic force microscopy. A standard sputter-anneal cleaning procedure leads to a nanostructuring of the surface with consequences for the magnetic properties. This finding sheds light on the reduced spin polarization measured by surface-sensitive techniques on NiMnSb surfaces.
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