Structural properties of alkali metals (Li, Na and K) in the generalized gradient approximation
SCIE
SCOPUS
- Title
- Structural properties of alkali metals (Li, Na and K) in the generalized gradient approximation
- Authors
- Kang, JH; Lee, SH; Kang, MH
- Date Issued
- 1998-07
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- We have studied the structural properties and the phase stability of the alkali metals (Li, Na, and K) by using the pseudopotential density-functional total-energy calculation scheme within the recently proposed generalized-gradient approximation (GGA) of Perdew, Burke, and Ernzerhof. The present GGA calculations predict the lattice constants, the bulk moduli, and the cohesive energies of the alkali metals more accurately than the local-density approximation calculations! but the order of the crystal energy at zero temperature is E-hcp < E-fcc < E-bcc for all these metals, irrespective of the exchange-correlation functionals used.
- Keywords
- GROUND-STATE; DENSITY FUNCTIONALS; PHASE-STABILITY; HIGH-PRESSURE; PSEUDOPOTENTIALS; LITHIUM; SOLIDS; EXCHANGE; ATOMS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/20715
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 33, no. 1, page. 76 - 80, 1998-07
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- There are no files associated with this item.
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