The phase behavior of substances is important for the understanding of the basic questions in supercooled liquids and material science. In this talk, I will present some of our studies on the critical phenomenon (polymorphism in liquid) associated with the anomalous behavior in water-like systems, as well as glass transformations (polyamorphism in glass) observed in bulk metallic systems. Our results based on the studies of the thermodynamic, dynamic, and structural properties of the model system are consistent with the experimental observations in water and provide a possible way for experiment to locate the liquid-liquid critical point buried in deep supercooled region.
References
[1] O. Mishima and H. E. Stanley, Nature 396, 329-335 (1998)
[2] L. Xu et al., Proc. Natl. Acad. Sci. 102, 16558-16562 (2005).
[3] L. Xu et. al, Nature Physics 5, 565-569 (2009).