Absence of volume metastability in bcc copper
- 15 February 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 41 (5), 2699-2703
- https://doi.org/10.1103/physrevb.41.2699
Abstract
A previous pseudopotential total-energy calculation on bcc copper revealed a structural metastability in the form of a double-well total-energy curve with two local minima (at 6% compression and 7% dilation relative to the observed equilibrium volume of the fcc structure), separated by a barrier. This was explained in terms of a symmetry breaking in the nonspherical components of the valence-electron charge density upon volume change. Our present all-electron calculation shows no such metastability; analysis of the response of the valence-electron charge density to volume deformations indeed shows no cause for such a metastability.Keywords
This publication has 15 references indexed in Scilit:
- First-principles determination of the bulk phase diagram for body-centered-tetragonal copper: Application to epitaxial growth of Cu on Fe{100}Physical Review B, 1989
- Electronic and structural properties of elemental copper: A pseudopotential–local-orbital calculationPhysical Review B, 1988
- Real-space formulation of the mixed-basis pseudopotential method: Bulk structural properties of elemental copperPhysical Review B, 1987
- Electronic theory of the alloy phase stability of Cu-Ag, Cu-Au, and Ag-Au systemsPhysical Review B, 1987
- Linearized augmented-plane-wave calculation of the electronic structure and total energy of tungstenPhysical Review B, 1985
- New approach for solving the density-functional self-consistent-field problemPhysical Review B, 1982
- Cohesive properties of metallic compounds: Augmented-spherical-wave calculationsPhysical Review B, 1979
- Self-Consistent Equations Including Exchange and Correlation EffectsPhysical Review B, 1965
- Inhomogeneous Electron GasPhysical Review B, 1964
- On the Interaction of Electrons in MetalsPhysical Review B, 1934