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The force constant of a bijellic interface
Author(s) -
Streitenberger P.,
Ziesche P.,
Nafari N.
Publication year - 1989
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221520112
Subject(s) - constant (computer programming) , equivalence (formal languages) , force constant , physics , mathematical analysis , classical mechanics , mathematics , quantum mechanics , pure mathematics , computer science , molecule , programming language
Abstract The equivalence of different expressions for the force constant of a bijellic interface is shown. Within the local density approximation of the universal functional, G [ n ], the force constant can be expressed solely in terms of bulk quantities. The Thomas‐Fermi‐Dirac approximation is applied and the results are compared with other ones obtained recently within the gradient expansion method.