Abstract
This chapter examines the effects of nonlinear screening of grains on liquid–solid phase transitions in colloidal plasmas, based upon the Yukawa model. In this context, the chapter takes a look at the properties of colloidal plasmas (CP), that is, the plasmas containing large number of colloidal (macro) particles. The chapter also discusses discuss the influence of nonlinear effects on melting curves within the Yukawa model. Based on the results, it is understood that there is a minimal charge asymmetry needed for crystallization of a Coulomb lattice and its value depends on the packing fraction of the colloidal component. The smaller packing fraction, the higher is the charge asymmetry, and, the stronger is the coupling required in colloidal component to reach the solid state. The chapter highlights the fact that due to the connection between the microscopic parameters of two-component asymmetric plasmas and the parameters of the Yukawa model, important qualitative conclusions can be obtained about a minimal charge asymmetry needed for formation of Coulomb lattices in CP.
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