Abstract
We investigate the freezing behavior of particles interacting with a Yukawa potential using extensions of the Denton and Ashcroft modified weighted density approximation (MWDA) model of density functional theory [A. R. Denton and N. W. Ashcroft, Phys. Rev. A 39, 470 (1989)]. An attempt is made to incorporate properties of the static solid into the fluid-based MWDA model via our previous model for the crystallization of inverse nth-power fluids [D. C. Wang and A. P. Gast, J. Chem. Phys. 110, 2522 (1999)], as well as a model that includes the Einstein vibrations of the localized particles. Both extensions yield improvements over the MWDA model in terms of coexisting densities and the ability to stabilize a body-centered cubic solid compared with computer simulation data. The fractional change in density upon freezing also compares favorably with results from available simulation studies and those for the inverse nth-power system. Reasons for the differences in results obtained for freezing properties of the Yukawa system among computer simulation data, theoretical approaches, and experimental studies are discussed.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 8:38 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 10, 2024, 5:34 p.m.) |
Indexed | 1 year, 6 months ago (Feb. 10, 2024, 6:10 p.m.) |
Issued | 25 years, 6 months ago (Feb. 8, 2000) |
Published | 25 years, 6 months ago (Feb. 8, 2000) |
Published Print | 25 years, 6 months ago (Feb. 8, 2000) |
@article{Wang_2000, title={Crystallization of a Yukawa fluid via a modified weighted density approximation with a solid reference state}, volume={112}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.480857}, DOI={10.1063/1.480857}, number={6}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Wang, Dean C. and Gast, Alice P.}, year={2000}, month=feb, pages={2826–2833} }