Electronic Band Structure Matching for Half- and Full-Heusler Alloys
Journal of magnetism and magnetic materials(2010)
Abstract
We explore the lattice and the electronic band structures matching between the half-metallic Heusler alloys (half-Heusler NiMnSb and full-Heusler Co2MnSi) and several hypothetical non-magnetic Heusler alloys by using first principle calculations. The lattice and band structure matching are almost perfectly satisfied between the two materials of similar crystal structures: (i) NiMnSb and XYSb and (ii) Co2MnSi and X2YSi, where X, Y=Ni or Cu. Owing to the high interface spin scattering asymmetry, these materials are promising to realize a high giant magnetoresistance at room temperature.
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Key words
Band structure,Giant magnetoresistance,First principle,Heusler alloy,Spacer
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