Linear wave-vector dependence of an optical phonon frequency in Bi12GeO20 in the vicinity of the Brillouin zone center

1978 ◽  
Vol 28 (2) ◽  
pp. 211-216 ◽  
Author(s):  
W. Imaino ◽  
A.K. Ramdas ◽  
S. Rodriguez
Keyword(s):  
Brillouin Zone ◽  
Wave Vector ◽  
Optical Phonon ◽  
Phonon Frequency ◽  
Linear Wave ◽  
Optical Phonon Frequency ◽  
Brillouin Zone Center

Strain-Induced Shift of Optical Phonon Frequency in InGaP Layers Grown on GaAs Substrates

1987 ◽  
Vol 26 (Part 2, No. 10) ◽  
pp. L1597-L1600 ◽  
Author(s):  
Takamasa Kato ◽  
Takashi Matsumoto ◽  
Mitsuru Hosoki ◽  
Tetsuro Ishida
Keyword(s):  
Optical Phonon ◽  
Phonon Frequency ◽  
Gaas Substrates ◽  
Optical Phonon Frequency

Raman scattering on silicon nanowires: The thermal conductivity of the environment determines the optical phonon frequency

2006 ◽  
Vol 88 (23) ◽  
pp. 233114 ◽  
Author(s):  
H. Scheel ◽  
S. Reich ◽  
A. C. Ferrari ◽  
M. Cantoro ◽  
A. Colli ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Raman Scattering ◽  
Silicon Nanowires ◽  
Optical Phonon ◽  
Phonon Frequency ◽  
Optical Phonon Frequency

Application of the nonuniform-field treatment to the infrared properties of LiF

1969 ◽  
Vol 47 (1) ◽  
pp. 51-64 ◽  
Author(s):  
A. J. Beaulieu
Keyword(s):  
Thin Films ◽  
Optical Phonon ◽  
Phonon Frequency ◽  
Quantitative Agreement ◽  
Longitudinal Optical ◽  
Optical Frequency ◽  
Nonuniform Field ◽  
Optical Phonon Frequency ◽  
Experimental Values ◽  
Comparison Of The Results

The "nonuniform-field treatment" developed earlier for infinitely thick crystals is applied to the LiF crystal. Comparison with experimental results both at 45° and at small angles of incidence gives good quantitative agreement only when the ratio of the longitudinal optical frequency to the transverse optical frequency is assumed to be 1.7 instead of 2.2 as predicted by the Lyddane–Sach–Teller relation. An extension of the treatment to thin films is presented and the comparison of the results with Berreman's experimental values indicates that the asymmetry and the amplitude of the features which could not be explained before can be predicted in terms of the nonuniform-field treatment, again provided the optical phonon frequency ratio is 1.7.

Strong dispersion of the surface optical phonon of silicon carbide in the near vicinity of the surface Brillouin zone center

2006 ◽  
Vol 600 (14) ◽  
pp. 2886-2893 ◽  
Author(s):  
T. Balster ◽  
F.S. Tautz ◽  
V.M. Polyakov ◽  
H. Ibach ◽  
S. Sloboshanin ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Brillouin Zone ◽  
Optical Phonon ◽  
Surface Optical ◽  
Surface Brillouin Zone ◽  
Brillouin Zone Center
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