Ginzburg-Landau theory for the solid-liquid interface of bcc elements. II. Application to the classical one-component plasma, the Wigner crystal, and He4
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 4761-4766 |
Journal / Publication | Physical Review A |
Volume | 39 |
Issue number | 9 |
Publication status | Published - 1989 |
Externally published | Yes |
Link(s)
Abstract
We extend our previously developed Ginzburg-Landau theory for calculating the crystal-melt interfacial tension of bcc elements to treat the classical one-component plasma (OCP), the charged fermion system, and the Bose crystal. For the OCP, a direct application of the theory of Shih et al. [Phys. Rev. A 35, 2611 (1987)] yields for the surface tension =1.12×10-3(Z2e2/a3), where Ze is the ionic charge and a is the radius of the ionic sphere. For the fermion system, the absence of reliable correlation functions near the coexistence line makes it difficult to estimate the surface tension. We treat the Bose crystal-melt interface by a quantum extension of the classical density-functional theory, using the Feynman formalism to estimate the relevant correlation functions. The theory is applied to the metastable He4 solid-superfluid interface at T=0, with a resulting surface tension 0.085 erg/cm2, in reasonable agreement with the value extrapolated from the measured surface tension of the bcc solid in the range 1.46 1.76 K. These results suggest that the density-functional approach is a satisfactory mean-field theory for estimating the equilibrium properties of liquid-solid interfaces, given knowledge of the uniform phases. © 1989 The American Physical Society.
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Citation Format(s)
Ginzburg-Landau theory for the solid-liquid interface of bcc elements. II. Application to the classical one-component plasma, the Wigner crystal, and He4. / Zeng, X. C.; Stroud, D.
In: Physical Review A, Vol. 39, No. 9, 1989, p. 4761-4766.
In: Physical Review A, Vol. 39, No. 9, 1989, p. 4761-4766.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review