Q F Xiao et al 2009 J. Phys.: Conf. Ser. 190 012101 doi:10.1088/1742-6596/190/1/012101
Q F Xiao1, S Kahwaji2, T L Monchesky2, R A Gordon1 and E D Crozier1
Show affiliationsDilute magnetic semiconductors combine both magnetic ordering and semiconducting behaviour, leading to potential spintronic applications. Silicon containing dilute Mn impurities is a potential dilute magnetic semiconductor. We have grown Mn delta-doped films by deposition of 0.7 of a monolayer of Mn on Si(001) by molecular beam epitaxy and capping the film with Si. The magnetic properties are likely sensitive to the distribution of Mn on substitutional or interstitial sites and the formation of metallic precipitates. We have used polarization-dependent XAFS to examine the local structure. We compare to a thicker MnSi film grown on Si(111) and also examine the influence of lead on the manganese environment when used as a surfactant in the growth process.
68.55.Ln Defects and impurities: doping, implantation, distribution, concentration, etc.
75.70.Ak Magnetic properties of monolayers and thin films
81.15.Hi Molecular, atomic, ion, and chemical beam epitaxy
75.50.Pp Magnetic semiconductors
Condensed matter: electrical, magnetic and optical
Issue 1 (2009)
Q F Xiao et al 2009 J. Phys.: Conf. Ser. 190 012101
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