Density anomaly as a function of tetrahedrality and bond angle in Stillinger-Weber potential

Thermodynamic anomalies have been highly-debated topics over the last decades, especially in the water community. However, the anomalies appear in many systems of broad technological or biological interest that are constructed from tetrahedral building blocks. In this work we use molecular dynamics to study thermodynamic anomalies in Stillinger-Weber (SW) liquids. We employ a systematic approach to explore how the structure of the liquid changes the anomalous behaviour. We change the liquid structure continuously by varying specific parameters of the SW model in order to produce parametrisations that correspond to different real liquids (such as germanium, silicon, water or carbon). We monitor the progression of the anomalies and give an explanation for their progression