Munarin F F, Nelissen K, Ferreira W P, Farias G A, Peeters F M
Department of Physics, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Mar;77(3 Pt 1):031608. doi: 10.1103/PhysRevE.77.031608. Epub 2008 Mar 20.
The melting of a self-organized system composed of classical particles confined in a two-dimensional parabolic trap and interacting through a potential with a short-range attractive part and a long-range repulsive potential is studied. Different behaviors of the melting temperature are found depending on the strength (B) of the attractive part of the interparticle potential. The melting of a system consisting of small bubbles takes place through a two-step melting process. A reentrant behavior and a thermally induced structural phase transition are observed in a small region of the (B,kappa) space. A hysteresis effect in the configuration of the particles is observed as a function of temperature. This is a consequence of the presence of a potential barrier between different configurations of the system.
研究了由限制在二维抛物线势阱中并通过具有短程吸引部分和长程排斥势的势相互作用的经典粒子组成的自组织系统的熔化。根据粒子间势的吸引部分的强度（B），发现了熔化温度的不同行为。由小气泡组成的系统的熔化通过两步熔化过程发生。在（B，κ）空间的一个小区域中观察到了再入行为和热诱导结构相变。作为温度的函数，观察到粒子构型中的滞后效应。这是系统不同构型之间存在势垒的结果。
