Structural transitions for 2D systems with competing interactions in logarithmic traps
| Autor: | Z.H. Wang, X.B. Xu, X.N. Xu, Mingqiang Gu, Guiyin Fang |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Imagination Work (thermodynamics) 010304 chemical physics Logarithm media_common.quotation_subject General Physics and Astronomy Function (mathematics) 010402 general chemistry 01 natural sciences Molecular physics 0104 chemical sciences Homogeneous 0103 physical sciences Cluster (physics) Harmonic Physical and Theoretical Chemistry Particle density media_common |
| Zdroj: | The Journal of chemical physics. 152(5) |
| ISSN: | 1089-7690 |
| Popis: | We propose a confinement model and study numerically the structural properties of particles with competing interactions in logarithmic traps (i.e., the confinement potential is a logarithmic function). A rich variety of cluster structures are observed as a function of trap steepness, trap size, and particle density. In addition to the consistent results with previous studies for a harmonic confinement, we observe some new stable structures, including a hybrid cluster structure consisting of clumps surrounded by a circular stripe, parallel stripes, or homogeneous voids surrounded by a ringlike arrangement of clumps, and a gear-like cluster with fringed outer rims evenly arranged along the circumference. Our work reveals that such self-organized structures arise due to the radial density reconfiguration in a finite confined system corresponding to the unconstrained systems, which is controlled by the interplay between the long-range repulsions and the attractions to the minimum of the confinement potential. Such results are likely relevant in understanding the structural properties of confined mermaid systems. |
| Databáze: | OpenAIRE |
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