期刊
JOURNAL OF CHEMICAL PHYSICS
卷 119, 期 3, 页码 1365-1372出版社
AMER INST PHYSICS
DOI: 10.1063/1.1580805
关键词
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The thermodynamic potential for fixed charges in dielectric continua is given for arbitrary values of the polarization density. Minimization of the functional gives the equilibrium polarization density (equivalently image charges) and the electrostatic potential throughout the media. The functional, which in general involves volume integrals, for the case of piecewise uniform dielectrica is reduced to surface integrals of the constrained surface charge density at the dielectric discontinuities. A linear integral equation for the induced surface charge, which can be solved by iteration, is given. The conjugate thermodynamic force for the constrained surface charge is also given. The latter formulation is suitable for Car-Parrinello or Lagrangian molecular dynamics in complex geometries. (C) 2003 American Institute of Physics.
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