Exciton dynamics in individual semimagnetic (Zn,Mn)Te/(Zn,Mg)Te nanowires.

Dynamics and mechanisms of photocreated carriers decay in individual core/shell (Zn,Mn)Te/ (Zn,Mg)Te semimagnetic nanowires are studied with a high temporal resolution. Exciton lifetime determined to 44 6 5 ps is found to increase to 78 6 5 ps upon application of magnetic field of up to 10 T. A quantitative modeling attributes the effects observed in time-resolved and time-integrated micro-photoluminescence to the magnetic field induced quenching of exchange Auger type, non-radiative carrier recombination related to Mn2þ ions. The reported properties of the semimagnetic nanowires are promising for their implementation in high-speed devices exploiting light-induced conductivity. VC 2015 AIP Publishing LLC. [ABSTRACT FROM AUTHOR]