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Proceedings Paper

Spin Polarization Experimental Studies In Heusler Alloys
Author(s): C. Rau; A. R. Koymen
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Paper Abstract

Atomically clean and flat surfaces of poly- and single-crstalline metallic Ni and half-metallic NiMnSb and PtMnSb are studied by electron capture spectroscopy (ECS) and by magneto-optical Kerr effect (MOKE). Long-ranged ferromagnetic order is found at all surfaces.The measured ECS-data for the electron spin polarization are consistent with predictions from recent spin-polarized band structure calculations. MOKE data ob-tained at surfaces of the Heusler alloys PtMnSb and NiMnSb contrast strikingly to data measured at Ni surfaces. At surfaces of single-crystalline PtMnSb, the Kerr effect (Kerr rotation and ellipticity) is approximately 20 times stronger compared to single-crystalline Ni(100) surfaces. This dramatic effect is attributed to the peculiar band structure of PtMnSb.

Paper Details

Date Published: 1 January 1987
PDF: 5 pages
Proc. SPIE 0836, Optoelectronic Materials, Devices, Packaging, and Interconnects, (1 January 1987); doi: 10.1117/12.967515
Show Author Affiliations
C. Rau, Rice University (United States)
A. R. Koymen, Rice University (United States)


Published in SPIE Proceedings Vol. 0836:
Optoelectronic Materials, Devices, Packaging, and Interconnects
Theodore E. Batchman; Richard Franklin Carson; Robert L. Galawa; Henry J. Wojtunik, Editor(s)

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