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.
Rok vydání:	2020
Předmět:	Physics - Plasma Physics
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
Externí odkaz:	http://arxiv.org/abs/2004.00213 Zobrazit plný text záznamu View this record from Arxiv