Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/77029
Title: Two-dimensional melting of polydisperse hard-disk system with pinning
Authors: Hu, Guoyu
Keywords: DRNTU::Engineering::Materials
Issue Date: 2019
Abstract: The melting transition of the two-dimensional system is one of the famous unresolved questions in phase transformations that attract physicists’ attention continuously. One unique feature of two-dimensional melting is the hexatic phase formed predicted by Kosterlitz-Thouless-Halperin-Nelson-Young (KTHNY) theory. However, the stability region of the hexatic phase is very small and it can hardly be observed in most systems. Recently, two methods, increasing polydispersity and random pinning a small fraction of particles, showed promising effects of enlarging the hexatic region. In this study, we implemented a modified Event-Chain Monte Carlo method to study the combined effects of these two factors on a hard-disk system. The phase diagram is calculated, and the transition points are significantly shifted that results in a stable hexatic phase over a wide range of density.
URI: http://hdl.handle.net/10356/77029
Rights: Nanyang Technological University
Fulltext Permission: embargo_restricted_20210408
Fulltext Availability: With Fulltext
Appears in Collections:MSE Student Reports (FYP/IA/PA/PI)

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