Domain growth in the interacting adsorbate: Nonsymmetric particle jump model

Autor:	Stanislaw Krukowski, Łukasz A. Turski, Andrzej Łusakowski, Magdalena A. Załuska-Kotur
Rok vydání:	2007
Předmět:	Physics media_common.quotation_subject Order (ring theory) Condensed Matter Physics Asymmetry Electronic Optical and Magnetic Materials Domain (ring theory) Exponent Jump Statistical physics Time domain Anisotropy media_common Potts model
Zdroj:	Physical Review B. 75
ISSN:	1550-235X 1098-0121
DOI:	10.1103/physrevb.75.115412
Popis:	We show that an exponent of a powerlike time domain growth is determined not only by the conservation or nonconservation of the order parameter, but also by the asymmetry of single-particle jumps. Domains that have an anisotropic pattern, such as $(2\ifmmode\times\else\texttimes\fi{}1)$, have a tendency to grow faster in a certain direction than they do in others. The rate of expansion in different directions depends on the barriers for single-particle jumps. As a result, dynamical behavior of systems which start in the same configurations and eventually reach the same equilibrium states is completely different. We show how differences in microscopic dynamics in a one-dimensional Potts model lead to different rates of domain growth. We observe a similar effect for a two-dimensional $(2\ifmmode\times\else\texttimes\fi{}1)$ ordering by changing the way in which a barrier for a jump depends on the number of neighboring particles. We show examples of the domain power growth, which are characterized by different exponents.
Databáze:	OpenAIRE
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