Abstract:
Bulk samples, layers, quantum well, and quantum dot structures of
II-Mn-VI samples all show coexistence of slow and fast components of Mn2+
photoluminescence decay. Thus, fast photoluminescence decay cannot be re-
lated to low dimensionality of a host material. This also means that the
model of the so-called quantum confined atom is incorrect. Based on the
results of time-resolved photoluminescence and optically detected magnetic
resonance investigations we relate the observed lifetime decrease in Mn2+
intra-shell transition to spin dependent magnetic interactions between local-
ized spins of Mn2+ ions and between Mn2+ ions and spins/magnetic moments
of free carriers. The latter mechanism is enhanced in nanostructures.
