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.

arXiv comment8 pages, 6 figures

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Cited by in corpus (3)

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• Anisotropic Sliding Dynamics, Peak Effect, and Metastability in Stripe Systems
• Structural transitions in vertically and horizontally coupled parabolic channels of Wigner crystals