When does ``like'' like ``like''? How does the repulsion-only assumption fail?

Details When does ``like'' like ``like''? How does the repulsion-only assumption fail? When does ``like'' like ``like''? How does the repulsion-only assumption fail?

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..519...78i&link_type=abstract

STATISTICAL PHYSICS: Third Tohwa University International Conference. AIP Conference Proceedings, Volume 519, pp. 78-86 (2000).

Physics

X-Ray Scattering, Polymers, Elastomers, And Plastics, Solid-Liquid Transitions, Microscopic Defects

Scientific paper

When dispersed particles or solute ions have high charge densities, macroscopically homogeneous systems become microscopically inhomogeneous. Examples are the two-state structure of ordered structures in disordered region without boundary and the void structures. When the charge density is increased, the reentrant phase (liquid-solid-liquid) transition is found, which is not explainable in terms of the repulsion-only assumption. Furthermore, for relatively small charge particles and at an early stage of crystallization, space-filling ordered states are first formed, disordered regions are then created inside the ordered domains, and crystal contraction thereafter takes place, causing the two-state structure. These may be explained by invoking a counterion-mediated attractive interaction between like-charged entities in addition to the widely accepted repulsion-only assumption. .

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