The superlattice thin films consisting of metallic ferromagnet MnAs and semiconducting GaAs were observed for an enhancement of both T c, magnetic anisotropy and the electric transport properties. The fact that the MnAs layer is hexagonal rather than zinc blends was indicated by the structural analysis. The highest T c and the largest magnetic anisotropy was shown by MnAs(5 nm)/GaAs(5 nm) superlattice. The temperature-dependent resistance of the sample exhibited magnetoresistance and semiconductor-like behavior was suggestive of an interplay between the charge carriers and the localized magnetic ions.
ASJC Scopus subject areas
- Physics and Astronomy(all)