Influence of internal stress on electron-phonon interaction inn-type germanium and silicon at low temperatures

1978 ◽  
Vol 18 (10) ◽  
pp. 5625-5636 ◽  
Author(s):  
Mahiradhwaj Singh ◽  
G. S. Verma
Keyword(s):  
Internal Stress ◽  
Low Temperatures ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

The Effects of the Electron-Phonon Interaction on the Vibrational Anomalies and Polymorphism in Titanium

1997 ◽  
Vol 491 ◽  
Author(s):  
J. L. Gavartin ◽  
D. J. Bacon
Keyword(s):  
Molecular Dynamics ◽  
Low Temperatures ◽  
Tight Binding ◽  
Phonon Interaction ◽  
Frequency Shifts ◽  
Electron Phonon Interaction ◽  
Electron Density Of States ◽  
Ω Phase ◽  
Molecular Dynamics Methods ◽  
Lattice Distortions

AbstractWe apply the frozen phonon and molecular dynamics methods within the semiempirical orthogonal tight-binding framework to study the anomalous behaviour of the (0001) optical longitudinal (LO) and transverse (TO) phonons in the low temperature hep phase of Ti, and the ⅔[111]L and ½[110]T1 phonons in the high temperature bec phase. We demonstrate that, in agreement with previous findings in Zr, the anomalous thermal frequency shifts in hep Ti are related to the strong coupling of the electron density of states (DOS) to the particular lattice distortions. The distortions along the bec ⅔[111]L and ½[110]T1 phonons also significantly affect the DOS, resulting in the instability of these modes at low temperatures and triggering the bcc-hep and bcc-ω phase transformations.

The simulation of the electron-phonon interaction in silicon

2018 ◽  
Vol 30 (12) ◽  
pp. 3-16
Author(s):  
A. Berezin ◽  
◽  
Yu. Volkov ◽  
M. Markov ◽  
I. Tarakanov ◽  
...  
Keyword(s):  
Phonon Interaction ◽  
Electron Phonon Interaction
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