Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/8203 https://doi.org/10.1002/qua.20321 |
Resumo: | Surface energies of some simple metals (Be, Al, Mg, Li, and Na) were calculated within density functional theory. Various approximations for the exchange and correlation were tested: local density approximation (LDA), generalized gradient approximations (GGA), and meta-generalized gradient approximation (MGGA). We used the Crystal98 code to calculate slabs with one to 10 layers using both all-electron and pseudopotential approaches. The extraction of the surface energy from the series of slab energies was done by the linear-fitting method. Our LDA and GGA results agree reasonably well with those from other authors. The MGGA values are, in general, close to LDA and higher than GGA ones, a pattern also observed in the jellium model. They also agree reasonably well with the experimental data. © 2004 Wiley Periodicals, Inc. Int J Quantum Chem, 2005 |
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Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionalsSurface energies of some simple metals (Be, Al, Mg, Li, and Na) were calculated within density functional theory. Various approximations for the exchange and correlation were tested: local density approximation (LDA), generalized gradient approximations (GGA), and meta-generalized gradient approximation (MGGA). We used the Crystal98 code to calculate slabs with one to 10 layers using both all-electron and pseudopotential approaches. The extraction of the surface energy from the series of slab energies was done by the linear-fitting method. Our LDA and GGA results agree reasonably well with those from other authors. The MGGA values are, in general, close to LDA and higher than GGA ones, a pattern also observed in the jellium model. They also agree reasonably well with the experimental data. © 2004 Wiley Periodicals, Inc. Int J Quantum Chem, 20052005info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/8203http://hdl.handle.net/10316/8203https://doi.org/10.1002/qua.20321engInternational Journal of Quantum Chemistry. 101:6 (2005) 645-650FIOLHAIS, Carlos ; ALMEIDA, Luís M. ; FIOLHAIS, Carlos – Surface energies of simple metals from slabs : comparison of exchange-correlation density functionals. International Journal of Quantum Chemistry. New York : John Wiley. ISSN 0020-7808. Vol. 101, n.º 6 (2005), p. 645-650Fiolhais, CarlosAlmeida, L. M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-05-29T09:42:14Zoai:estudogeral.uc.pt:10316/8203Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:59:58.883036Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals |
title |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals |
spellingShingle |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals Fiolhais, Carlos |
title_short |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals |
title_full |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals |
title_fullStr |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals |
title_full_unstemmed |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals |
title_sort |
Surface energies of simple metals from slabs: Comparison of exchange-correlation density functionals |
author |
Fiolhais, Carlos |
author_facet |
Fiolhais, Carlos Almeida, L. M. |
author_role |
author |
author2 |
Almeida, L. M. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Fiolhais, Carlos Almeida, L. M. |
description |
Surface energies of some simple metals (Be, Al, Mg, Li, and Na) were calculated within density functional theory. Various approximations for the exchange and correlation were tested: local density approximation (LDA), generalized gradient approximations (GGA), and meta-generalized gradient approximation (MGGA). We used the Crystal98 code to calculate slabs with one to 10 layers using both all-electron and pseudopotential approaches. The extraction of the surface energy from the series of slab energies was done by the linear-fitting method. Our LDA and GGA results agree reasonably well with those from other authors. The MGGA values are, in general, close to LDA and higher than GGA ones, a pattern also observed in the jellium model. They also agree reasonably well with the experimental data. © 2004 Wiley Periodicals, Inc. Int J Quantum Chem, 2005 |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/8203 http://hdl.handle.net/10316/8203 https://doi.org/10.1002/qua.20321 |
url |
http://hdl.handle.net/10316/8203 https://doi.org/10.1002/qua.20321 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Quantum Chemistry. 101:6 (2005) 645-650 FIOLHAIS, Carlos ; ALMEIDA, Luís M. ; FIOLHAIS, Carlos – Surface energies of simple metals from slabs : comparison of exchange-correlation density functionals. International Journal of Quantum Chemistry. New York : John Wiley. ISSN 0020-7808. Vol. 101, n.º 6 (2005), p. 645-650 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133890103738369 |