Hysteresis and re-entrant melting of a self-organized system of classical particles confined in a parabolic trap

Abstract

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 long-range repulsive part is studied as function of temperature. The influence of the competition between the short-range attractive part of the inter-particle potential and its long-range repulsive part on the melting temperature is studied. Different behaviors of the melting temperature are found depending on the screening length ($\kappa$) and the strength ($B$) of the attractive part of the inter-particle potential. A re-entrant behavior and a thermal induced phase transition is observed in a small region of ($\kappa ,B$)-space. A structural hysteresis effect is observed as a function of temperature and physically understood as due to the presence of a potential barrier between different configurations of the system.

8 pages, 6 figures

References in corpus (3)

• Partial Clustering in Binary Two-Dimensional Colloidal Suspensions
• Local Symmetries and Order-Disorder Transitions in Small Macroscopic Wigner Islands
• Induced order and reentrant melting in classical two-dimensional binary clusters

Cited by in corpus (1)

• Structural transitions in vertically and horizontally coupled parabolic channels of Wigner crystals