Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
68 (1990), S. 4332-4334
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The results of far infrared reflectivity and Raman scattering spectra reported recently in Hg1−xMnxTe samples with low composition of Mn impurities are analyzed theoretically. The Kramers–Kronig analysis in the spectral range (50–350 cm−1 ) is employed to obtain the proper energetic positions of the two optical phonons and a weak peak near ∼98 cm−1 (above the longitudinal acoustic-phonon band of HgTe). Simple schemes, based on the so called "oscillator fit'' and modified random element isodisplacement models, are chosen with appropriate values of transition energies and strengths to reproduce the observed reflectivity spectra. A comprehensive calculation of the lattice dynamics in terms of semi-empirical Green's function theory has provided convincing arguments that the feature near 98 cm−1 is a gap mode of Mn in HgTe.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.346206
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