Sažetak sa skupa

Optical characteristics Hg₁₋ₓMnₓSe (x = 0.11)

Z. Popović ; Institute of Physics of the Socialist Republic of Serbia, Beograd
O. Žižić ; Faculty of Mechanical Engineering, Beograd
U. Mioč ; Institute of Physical Chemistry, Faculty Science, Beograd
G. Ćogurić ; • Institute of Physics of the Socialist Republic of Serbia, Beograd

Sažetak

In this paper the optical characteristics of the semimagnetic semiconductor Hg₁₋ₓMnₓSe in the range from the ultraviolet to the far infrared part of the spectrum of the electromagnetic radiation, at several temperatures in the interval from 10 K to 300 K were studied. In the wave range from 300–900 nm two maxima were observed in the reflection spectra: at 430 nm and 820.6 nm, stemming from the interband electron transitions in HgSe. The phonon modes at about 101 cm⁻¹ and 137 cm⁻¹ stem from the HgSe lattice vibration, and at 215 cm⁻¹ from the MnSe lattice. By the analysis of the reflection spectrum the dependence of the imaginary part of the dielectric permeability on the wave number, ε₂(ω), as well as the value of dielectric permeability at very high frequencies were determined. The temperature dependence of the reflection spectrum in the range from 50–600 cm⁻¹ shows the presence of a very strong plasmon-phonon interaction.

Ključne riječi

Hrčak ID:

339866

URI

https://hrcak.srce.hr/339866

Datum izdavanja:

20.12.1989.

Posjeta: 150 *