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Structural Transitions in a Classical Two-Dimensional Molecule System

W. P. Ferreira·G. A. Farias·H. A. Carmona·F. M. Peeters
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Abstract

The ground state of a classical two-dimensional (2D) system with finite number of charged particles, trapped by two positive impurities charges localized at a distance (zo) from the 2D plane and separated from each other by a distance xp are obtained. The impurities are allowed to carry more than one positive charge. This classical system can form a 2D-like classical molecule that exhibits structural transitions and spontaneous symmetry breaking as a function of the separation between the positive charges before it transforms into two independent 2D-like classical atoms. We also observe structural transitions as a function of the dielectric constant of the substrate which supports the charged particles, in addition to broken symmetry states and unbinding of particles.

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W. P. Ferreira, G. A. Farias, H. A. Carmona, F. M. Peeters. 2002-03-06. Structural Transitions in a Classical Two-Dimensional Molecule System. https://doi.org/10.1016/s0038-1098(02)00157-6

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