Melting of Dislocation Vector Systems in Two Dimensions
- 19 April 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 48 (16) , 1114-1117
- https://doi.org/10.1103/physrevlett.48.1114
Abstract
A Monte Carlo study of a system of interacting dislocation vectors reveals the possibility of two types of phase transitions. For a system with a large dislocation core energy, unbinding of dislocation pairs causes a continuous phase transition. With a small core energy a first-order transition is produced by formation of grain boundaries. This possibly resolves the discrepancy between the Kosterlitz-Thouless theory and previous computer experiments of atomistic systems.Keywords
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