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Experimental Quasi‐Harmonic and Leading‐Order Anharmonic Coefficients of Ag, Al, Au, Cu, Fe
Author(s) -
Quareni F.,
Mulargia F.
Publication year - 1991
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.2221670215
Subject(s) - anharmonicity , aluminium , copper , third order , hamiltonian (control theory) , harmonic , order (exchange) , harmonic oscillator , thermodynamics , chemistry , materials science , physics , condensed matter physics , mathematics , metallurgy , quantum mechanics , mathematical optimization , philosophy , theology , finance , economics
The recently developed procedure of estimating the leading order anharmonic coefficients (third and fourth order in the Hamiltonian) from available thermodynamic data is applied to five metals: silver, aluminium, gold, copper, and iron. Stable estimates are obtained, yielding that the leading order anharmonic contributions are comparable with the electronic ones. The quasi‐harmonic coefficients are also estimated.