Title of article :
Far-infrared analysis of lattice vibrations in ZnSe/ZnCdSe superlattices
Author/Authors :
Vodopyanov، نويسنده , , L.K. and Kozyrev، نويسنده , , S.P. and Sadofyev، نويسنده , , Yu.G. and Tarasov، نويسنده , , G.G. and Litvinchuk، نويسنده , , A.P.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Abstract :
The results of the first measurements of far-infrared lattice reflection spectra of ZnSe/ZnCdSe superlattices grown on a GaAs substrate by molecular-beam epitaxy are presented. It is shown by a dispersion analysis of the experimental spectra measured at temperatures 300 and 10 K that, in the superlattices under study, instead of two TO modes corresponding to two different layers ZnSe and ZnCdSe of the superlattice only one TO mode is observed which has a frequency between the frequencies of the two layers. The existence of a single transverse mode in the lattice reflectivity spectrum of the ZnSe/ZnCdSe superlattice has been explained by a convergence of the vibrational modes under the effect of internal elastic strains.
Keywords :
Quantum wells , Semiconductors , Spectroscopy
Journal title :
Solid State Communications
Journal title :
Solid State Communications