1. Competing structures in a minimal double-well potential model of condensed matter
- Author
-
Cartwright, Julyan H. E., Escribano, Bruno, Roldán-Vargas, Sándalo, and Sainz-Díaz, C. Ignacio
- Subjects
Condensed Matter - Materials Science ,Condensed Matter - Disordered Systems and Neural Networks ,Condensed Matter - Statistical Mechanics - Abstract
The microscopic structure of several amorphous substances often reveals complex patterns such as medium- or long-range order, spatial heterogeneity, and even local polycrystallinity. To capture all these features, models usually incorporate a refined description of the particle interaction which includes an ad hoc design of the inside of the system constituents. We show that all these features can emerge from a minimal two-dimensional model where particles interact isotropically by a double-well potential, and have an excluded volume and a maximum coordination number. The rich variety of structural patterns shown by this simple model apply to a wide catalogue of real systems including water, silicon, and different amorphous materials., Comment: 5 pages, 5 figures
- Published
- 2024