Solid superheating observed in two-dimensional strongly-coupled dusty plasma

Abstract

It is demonstrated experimentally that strongly-coupled plasma exhibits solid superheating. A 2D suspension of microspheres in dusty plasma, initially self-organized in a solid lattice, was heated and then cooled rapidly by turning laser heating on and off. Particles were tracked using video microscopy, allowing atomistic-scale observation during melting and solidification. During rapid heating, the suspension remained in a solid structure at temperatures above the melting point, demonstrating solid superheating. Hysteresis diagrams did not indicate liquid supercooling in this 2D system.

9 pages text, 3 figures, in press Physical Review Letters 2008

References in corpus (4)

• Superdiffusion and non-Gaussian statistics in a driven-dissipative 2D dusty plasma
• Crystallization of a quasi-two-dimensional granular fluid
• Dynamic Glass Transition in Two Dimensions
• Phase separation in the crust of accreting neutron stars

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