|Title||$\beta$-NMR Study of a buried Mn $δ$-doped layer in a silicon host|
|Publication Type||Journal Article|
|Year of Publication||2014|
|Authors||Cortie, D, Buck, T, McFadden, RML, Xiao, J, Levy, CDP, Dehn, M, Pearson, M, Morris, GD, Dunsiger, SR, Kiefl, RF, Rueß, FJ, Fuhrer, A, MacFarlane, WA|
|Journal||J. Phys.: Conf. Ser.|
Low temperature growth methods were used to encapsulate a buried Mn δ-doping layer into a silicon host. A β -NMR investigation was performed of the magnetic properties in the temperature range 10 – 300 K using spin-polarized 8 Li + . A depth-dependent broadening and shift of the NMR resonance was detected that is consistent with internal fields distributed at depths of 10 – 30 nm beneath the surface. At low temperatures, a negative relative shift occurred and the resonance was significantly broadened. At 300 K the line-shape could be described by a single Gaussian line, however, at 10 K the line is best approximated by a two component Lorentzian shape consisting of a broad and narrow component as anticipated for a diluted magnetic alloy. The overall magnitude of the resonance shift at both temperatures is small suggesting a weak interaction between the 8 Li + and the magnetic Mn environment.