The Magneto-Optical Response of Diluted Magnetic Semiconductor CdTe-Cd_{1-x}Mn_{x}Te Multi Quantum Wells in the Voigt Configuration

• Authors: M. Hidari , S. Farjami Shayesteh
• Languages of publication: EN

Abstracts

EN

We have calculated the s- and p-polarized far infrared magnetoplasmon spectra of doped CdTe-Cd_{1-x}Mn_{x}Te multi quantum wells in the presence of a static magnetic field up to 20 T parallel to the surface of the layers using a macroscopic model based on effective medium theory, using a novel approach which gives a good account of the data together with a clear physical interpretation of the various spectral features, such as the free carrier and optical phonon properties. The results show that the transverse optical modes (for the whole composition range, x = 0 to 1) are sensitive and change linearly with respect to the composition parameter. In p-polarized reflectivity the cyclotron resonance experiences a blue shift when the magnetic field strength increases. Also, the analysis of the dielectric tensor function and the Voigt dielectric function is used to determine the carriers' cyclotron effective masses (for both holes and electrons) as a function of composition. Furthermore, a modified random element iso-displacement approach has been extended for the multi layers to analyze the influence of the composition on the optical phonon response in the barrier layer.

Keywords

EN

78.30.Fs; 78.30.-j; 78.20.Ls; 73.21.Fg

Discipline

• 78.20.Ls: Magneto-optical effects(for magneto-optical devices, see 85.70.Sq)
• 73.21.Fg: Quantum wells
• 78.30.-j: Infrared and Raman spectra(for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.-x, respectively; for Raman spectra of superconductors, see 74.25.nd)
• 78.30.Fs: III-V and II-VI semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 2
• Pages: 232-237

Dates

published

2009-08

received

2009-06-01

(unknown)

2009-06-09

Contributors

author

M. Hidari

• Department of Physics, University of Guilan, P.O. Box. 1914, Rasht, Iran

author

S. Farjami Shayesteh

• Department of Physics, University of Guilan, P.O. Box. 1914, Rasht, Iran

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Identifiers

DOI

10.12693/APhysPolA.116.232