scholarly journals Anharmonic phonon frequency shift inMgB2

2003 ◽  
Vol 68 (22) ◽  
Author(s):  
Michele Lazzeri ◽  
Matteo Calandra ◽  
Francesco Mauri
Keyword(s):  
Frequency Shift ◽  
Phonon Frequency

Raman Scattering Spectroscopy of GeSi/Si Strained Layer Superlattice

1993 ◽  
Vol 298 ◽  
Author(s):  
Zhang Rong ◽  
Zheng Youdou ◽  
Gu Shulin ◽  
Hu Liqun
Keyword(s):  
Raman Scattering ◽  
Frequency Shift ◽  
Raman Spectra ◽  
Strain Distribution ◽  
Phonon Frequency ◽  
New Method ◽  
Raman Scattering Spectroscopy ◽  
Scattering Measurements ◽  
Optic Phonon ◽  
Strained Layer Superlattice

AbstractRaman scattering measurements have been carried out on Si1-xGex/Si SLS. It is found that the Ge–Ge optic phonon frequency shift is proportional to strain in the SiGe film, and the Ge–Ge strain shift coefficient is 408cm−1. Based on these study a new method for analyzing the Raman spectra of SiGe/Si SLS has been proposed. Using the new method we can obtain the composition of the alloy sublayers as well as the strain in SLS. The strain distribution in the SiGe/Si SLS has been discussed, and strain in both SiGe and Si sublayers of the SLS have been calculated.

Observation of the correlation between the phonon frequency and long-range magnetic ordering on a MnW octacyanide molecule–based magnet

2021 ◽  
Author(s):  
Hiroko Tokoro ◽  
Naotaka Maeda ◽  
Kenta Imoto ◽  
Koji Nakabayashi ◽  
Kouji Chiba ◽  
...  
Keyword(s):  
Phase Transition ◽  
Frequency Shift ◽  
Long Range ◽  
Magnetic Phase Transition ◽  
Phonon Frequency ◽  
Magnetic Phase ◽  
Magnetic Ordering ◽  
Anomalous Change

We show an anomalous change in the phonon frequency at the magnetic phase transition on a cyanide-bridged bimetal assembly, Mn3[W(CN)8]2(pyrimidine)4·6H2O. This compound shows a frequency shift in the CN stretching...

Phonon frequency shift and attenuation in a compressible Ising magnet

1976 ◽  
Vol 58 (3) ◽  
pp. 197-198 ◽  
Author(s):  
G.K. Roy ◽  
B.K. Chakrabarti
Keyword(s):  
Frequency Shift ◽  
Phonon Frequency ◽  
Ising Magnet
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