Unusual Force Constants Guided Distortion-Triggered Loss of Long-Range Order in Phase Change Materials
Unusual force constants originating from the local charge distribution in crystalline GeTe and Sb<sub>2</sub>Te<sub>3</sub> are observed by using the first-principles calculations. The calculated stretching force constants of the second nearest-neighbor Sb-Te and Ge-Te bonds...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
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| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/13/3514 |