Polymorphism in glassy silicon: Inherited from liquid-liquid phase transition in supercooled liquid

Combining molecular dynamics (MD) simulation and Voronoi polyhedral analyses, we discussed the microstructure evolution in liquid and glassy silicon during cooling by focusing on the fraction of various clusters. Liquid-liquid phase transition (LLPT) is detected in supercooled liquid silicon However...

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Bibliographic Details
Published in:Scientific reports 2015-02, Vol.5 (1), p.8590-8590, Article 8590
Main Authors: Zhang, Shiliang, Wang, Li-Min, Zhang, Xinyu, Qi, Li, Zhang, Suhong, Ma, Mingzhen, Liu, Riping
Format: Article
Language:English
Subjects:
119/118
639/301/119/1002
639/766/530/2795
Freezing
High density lipoprotein
Humanities and Social Sciences
Low density lipoprotein
Molecular dynamics
multidisciplinary
Phase transitions
Science
Silicon
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Summary:Combining molecular dynamics (MD) simulation and Voronoi polyhedral analyses, we discussed the microstructure evolution in liquid and glassy silicon during cooling by focusing on the fraction of various clusters. Liquid-liquid phase transition (LLPT) is detected in supercooled liquid silicon However, freezing the high-density liquid (HDL) to the glassy state is not achieved as the quenching rate goes up to 10 14  K/s. The polyamorphism in glassy silicon is found to be mainly associated with low-density liquid (LDL).
ISSN:2045-2322
2045-2322
DOI:10.1038/srep08590