Experimental observation of a first order phase transition in a complex plasma mono-layer crystal
Autor: | Hariprasad, M. G., Bandyopadhyay, P., Arora, Garima, Sen, A. |
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Rok vydání: | 2020 |
Předmět: | |
Zdroj: | Phys. Rev. E 101, 043209 (2020) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevE.101.043209 |
Popis: | The formation and melting of a mono-layered charged dust particle crystal in a DC glow discharge Argon plasma is studied. The nature of the melting/formation process is established as a first order phase transition from the nature of the variations in the Coulomb coupling parameter, the dust temperature, the structural order parameter and from the existence of a hysteresis behavior. Our experimental results are distinctly different from existing theoretical predictions for 2D crystals based on the KTHNY mechanism or the Grain boundary induced melting and indicate a novel mechanism that is akin to a fluctuation induced first order phase transition that has not been observed before in complex plasmas. Comment: The manuscript contains 6 pages, 5 figures. This manuscript is accepted for publication in PRE, 2020 |
Databáze: | arXiv |
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