1 research outputs found
Spin Splitting Anisotropy in Single Diluted Magnetic Nanowire Heterostructures
We study the impact of the nanowire
shape anisotropy on the spin splitting of excitonic photoluminescence.
The experiments are performed on individual ZnMnTe/ZnMgTe core/shell
nanowires as well as on ZnTe/ZnMgTe core/shell nanowires containing
optically active magnetic CdMnTe insertions. When the magnetic field
is oriented parallel to the nanowire axis, the spin splitting is several
times larger than for the perpendicular field. We interpret this pronounced
anisotropy as an effect of mixing of valence band states arising from
the strain present in the core/shell geometry. This interpretation
is further supported by theoretical calculations which allow to reproduce
experimental results