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

Journal Article · Mon Sep 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4929822· OSTI ID:22494843

Gałkowski, K.; Papierska, J.; Sawicki, K.; Kossacki, P.; Wojnar, P.; Janik, E. ^[1]

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1. Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw (Poland)

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 ± 5 ps is found to increase to 78 ± 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 Mn{sup 2+} ions. The reported properties of the semimagnetic nanowires are promising for their implementation in high-speed devices exploiting light-induced conductivity.

• OSTI ID: 22494843
• Journal Information: Journal of Applied Physics, Vol. 118, Issue 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARRIERS
COMPUTERIZED SIMULATION
DECAY
EXCITONS
MAGNETIC FIELDS
MANGANESE IONS
MANGANESE TELLURIDES
NANOWIRES
PHOTOLUMINESCENCE
RECOMBINATION
TIME RESOLUTION
VISIBLE RADIATION
ZINC TELLURIDES