TY - GEN
T1 - Spectroscopy of confined LO phonons in superlattices
T2 - Proceedings of the 18th International Conference on Infrared and Millimeter Waves
AU - Vasilevskiy, M. I.
PY - 1993
Y1 - 1993
N2 - Spectroscopy of light scattering on LO phonons confined in short-periodical superlattices (SL) is known to be sensitive to disorders existing on the interfaces. The authors have developed a 1D lattice dynamics model providing mode shifts and the shape of the lines due to broadening of the interfaces. Results obtained show that alloys of constituent materials exhibits two mode behaviours. Using simple linear interpolation, models predict the monotonous increase of the shift with mode number in contradiction with experimental data. In conclusion, the improved 1D model has been fruitful in showing the features of the SL phonon modes and is applicable for analysing the effects of non-random composition distribution near the interfaces due to specific features of a technique used for SL fabrication.
AB - Spectroscopy of light scattering on LO phonons confined in short-periodical superlattices (SL) is known to be sensitive to disorders existing on the interfaces. The authors have developed a 1D lattice dynamics model providing mode shifts and the shape of the lines due to broadening of the interfaces. Results obtained show that alloys of constituent materials exhibits two mode behaviours. Using simple linear interpolation, models predict the monotonous increase of the shift with mode number in contradiction with experimental data. In conclusion, the improved 1D model has been fruitful in showing the features of the SL phonon modes and is applicable for analysing the effects of non-random composition distribution near the interfaces due to specific features of a technique used for SL fabrication.
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M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 819413925
VL - 2104
SP - 306
EP - 307
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Publ by Society of Photo-Optical Instrumentation Engineers
Y2 - 6 September 1993 through 10 September 1993
ER -