Pressure-softening of zone-edge TA phonons and the fourfold to sixfold phase change

The observed tendency in tetrahedral solids for the pressure-induced softening of zone-edge TA phonons to correlate with the threshold pressure PT of the fourfold to sixfold phase change is examined for 25 materials. A strong correlation is found for an effective pressure shift obtained by using a s...

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Veröffentlicht in:	Physical review. B 2021-08, Vol.104 (5), p.1, Article 054105
1. Verfasser:	Weinstein, B. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Correlation Phase change Phase transitions Phonons Q factors Softening Stiffening
Online-Zugang:	Volltext
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