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Epitaxial Growth and Characterization of Zinc-blende CrAs/GaAs/MnAs/GaAs Multilayers
Journal of Magnetics, Volume 11, Number 1, 31 Mar 2006, Pages 1-4
Abstract
We report on the growth, structural and transport properties of zinc-blende CrAs/GaAs/MnAs/GaAs multilayers on GaAs(001) substrates. Structural analyses using in-situ reflection high-energy electron diffraction and exsitu cross-sectional transmission electron microscopy confirmed the realization of a zinc-blende crystal structure. Room temperature Hall measurements reveal that the as-grown multilayer exhibits p-type conductivity with a very low resistivity of 0.25 ωcm, a high carrier concentration of 6.2×1019 cm-3 and a Hall mobility of 1.8 cm2/Vs. We also observed a clear decrease of the resistivity in samples after low temperature annealing.
Keywords: half-metallic ferromagnets; zinc-blende multilayer; hall effect
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