INVESTIGADORES
VEGA Daniel Alberto
artículos
Título:
Crystallization Dynamics on Curved Surfaces
Autor/es:
GARCIA NA; REGISTER RA; DA VEGA; LR GOMES
Revista:
PHYSICAL REVIEW E
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2013 vol. 88 p. 123061 - 123067
ISSN:
1539-3755
Resumen:
We study the evolution from a liquid to a crystal phase in two-dimensional curved space. At early times, whilecrystal seeds grow preferentially in regions of low curvature, the lattice frustration produced in regions withhigh curvature is rapidly relaxed through isolated defects. Further relaxation involves a mechanism of crystalgrowth and defect annihilation where regions with high curvature act as sinks for the diffusion of domain walls.The pinning of grain boundaries at regions of low curvature leads to the formation of a metastable structureof defects, characterized by asymptotically slow dynamics of ordering and activation energies dictated by thelargest curvatures of the system. These glassylike ordering dynamics may completely inhibit the appearance ofthe ground-state structures.
