Exciton Dynamics in ZnTe Based Semimagnetic Semiconductors and CdMnTe Quantum Wells

• Authors: Nguyen The Khoi , J. Gaj , G. Karczewski , T. Wojtowicz , J. Kossut , M. Demianiuk
• Languages of publication: EN

Abstracts

EN

Inelastic scattering of excitons on LO phonons in ZnTe based bulk semimagnetic semiconductors with low concentration of paramagnetic ions (Mn^{2+}, Fe^{2+} and Cr^{2+}) was studied. A polarization degree of the LO phonon Raman lines was measured as a function of the exciton splitting in a magnetic field, and allowed us to determine the polarization lifetime (polariton flight time). A similar method was used to investigate multiple Mn^{2+} spin-flip scattering in CdMnTe quantum well. The cascade model seems to be not adequate to interpret the dependence of the polarization degree on the order of scattering.

Keywords

EN

75.50.Pp; 78.66.Hf; 73.20.Dx

Discipline

• 78.66.Hf: II-VI semiconductors
• 75.50.Pp: Magnetic semiconductors

• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 5
• Pages: 899-902

Dates

published

1996-11

Contributors

author

Nguyen The Khoi

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

J. Gaj

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

G. Karczewski

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

author

T. Wojtowicz

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

author

J. Kossut

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

author

M. Demianiuk

• Institute of Technical Physics, Military Academy of Technology, Kaliskiego 2, 00-908 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.90.899