Defects and particle motions in the nonuniform melting of a two-dimensional Coulomb cluster

Ying Ju Lai, I. Lin

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

The defect excitation and nonuniform melting of a two-dimensional Coulomb cluster with 300 charged particles (interacting with (Formula presented) type force) in a uniform neutralizing background are studied numerically. Intrinsic defects exist around the outer circular shells surrounding the inner triangular lattice. They are the source regions for anisotropic particle thermal vibrations and then cyclic hoppings with the increasing temperature. It leads to the nonuniform melting associated with the thermal motion of intrinsic defects, and then the thermal excitation of dislocation pairs and disclinations. The intrinsic defect free center core has the highest melting temperature. It shows the sequential losses of translational and then orientational orders.

原文???core.languages.en_GB???
頁(從 - 到)4
頁數1
期刊Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
64
發行號1
DOIs
出版狀態已出版 - 2001

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