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Updated: Aug 24, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
Published on: May 28, 2016
Influence of a defect particle on the structure of a classical two-dimensional cluster
K Nelissen1, B Partoens, F M Peeters
1Departement Fysica, Universiteit Antwerpen (Campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerp, Belgium.
Abstract:
A system of classical charged particles interacting through a Coulomb repulsive potential which are confined in a two-dimensional parabolic trap is studied. We allow one or two particles, called defect particles, to have a different mass and/or charge than the other particles. The structure of the whole system depends on the mass and the charge of the defects and the total number of particles in the system. The ground state configurations are investigated and phase diagrams are constructed, which explain the recent experimental results of Phys. Rev. E 64, 11 603 (2001)]]. We found that several of the experimental configurations are metastable and that replacing the Coulomb interparticle potential by an inversely quadratic one has only a minor effect on the results.
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