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arXiv · 0707.1498

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

F. F. Munarin·K. Nelissen·W. P. Ferreira·G. A. Farias·F. M. Peeters
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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 ($κ$) 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 ($κ,B$)-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.

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F. F. Munarin, K. Nelissen, W. P. Ferreira, G. A. Farias, F. M. Peeters. 2007-07-10. Hysteresis and re-entrant melting of a self-organized system of classical particles confined in a parabolic trap. https://doi.org/10.1103/physreve.77.031608

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