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No.1(pp.1-59)

Home > Issues > Volume 11 (2006) > No.1(pp.1-59)

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

W.H. Wang*

(Research Consortium for Synthetic Nano-Function Materials Project(SYNAF), Nanotechnology Research Institute(NRI), National Institute of Advanced Industrial Science and Technology(AIST)), T. Manago(Research Consortium for Synthetic Nano-Function Materials Project(SYNAF), Nanotechnology Research Institute(NRI), National Institute of Advanced Industrial Science and Technology(AIST)), H. Akinaga(Research Consortium for Synthetic Nano-Function Materials Project(SYNAF), Nanotechnology Research Institute(NRI), National Institute of Advanced Industrial Science and Technology(AIST))

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 6.2×10¹⁹cm^-3and 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

DOI:

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