Origin of Ultrafast Component of Photoluminescence Decay in Nanostructures Doped with Transition Metal or Rare-Earth Ions

• Authors: M. Godlewski , S. Yatsunenko , V. Ivanov , A. Khachapuridze , K. Świątek , E. Goldys , M. Phillips , P. Klar , W. Heimbrodt
• Languages of publication: EN

Abstracts

EN

Bulk samples, layers, quantum well, and quantum dot structures of II-Mn-VI samples all show coexistence of slow and fast components of Mn^{2+} photoluminescence decay. Thus, fast photoluminescence decay cannot be related 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 Mn^{2+} intra-shell transition to spin dependent magnetic interactions between localized spins of Mn^{2+} ions and between Mn^{2+} ions and spins/magnetic moments of free carriers. The latter mechanism is enhanced in nanostructures.

Keywords

EN

71.55.Gs; 76.30.Fc; 76.70.Hb; 78.55.Et

Discipline

• 78.55.Et: II-VI semiconductors
• 76.30.Fc: Iron group (3d) ions and impurities (Ti-Cu)
• 71.55.Gs: II-VI semiconductors
• 76.70.Hb: Optically detected magnetic resonance (ODMR)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 1
• Pages: 65-74

Dates

published

2005-01

received

2004-08-22

Contributors

author

M. Godlewski

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

author

S. Yatsunenko

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

author

V. Ivanov

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

author

A. Khachapuridze

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

author

K. Świątek

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

author

E. Goldys

• Div. of Information and Communication Sciences, Macquarie Univ., Sydney, Australia

author

M. Phillips

• Microstructural Analysis Unit, UTS, Sydney, Australia

author

P. Klar

• Dept. of Physics and Materials Sciences Center, Phillips-University of Marburg, Renthof 5, 35032 Marburg, Germany

author

W. Heimbrodt

• Dept. of Physics and Materials Sciences Center, Phillips-University of Marburg, Renthof 5, 35032 Marburg, Germany

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Identifiers

DOI

10.12693/APhysPolA.107.65