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First-principles calculation of the thermal properties of silver

Authors
  • Xie, Jianjun
  • de Gironcoli, Stefano
  • Baroni, Stefano
  • Scheffler, Matthias
Type
Preprint
Publication Date
Jul 24, 1998
Submission Date
Jul 24, 1998
Identifiers
DOI: 10.1103/PhysRevB.59.965
arXiv ID: cond-mat/9807323
Source
arXiv
License
Unknown
External links

Abstract

The thermal properties of silver are calculated within the quasi-harmonic approximation, by using phonon dispersions from density-functional perturbation theory, and the pseudopotential plane-wave method. The resulting free energy provides predictions for the temperature dependence of various quantities such as the equilibrium lattice parameter, the bulk modulus, and the heat capacity. Our results for the thermal properties are in good agreement with available experimental data in a wide range of temperatures. As a by-product, we calculate phonon frequency and Grueneisen parameter dispersion curves which are also in good agreement with experiment.

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