Data di Pubblicazione:
2008
Citazione:
Norm conserving pseudopotentials for iron with semicore states / L. Caramella, D. Tavella, G. Onida. ((Intervento presentato al 10. convegno Epioptics : international school of solid state physics tenutosi a Erice, Italy nel 2008.
Abstract:
Semicore states of transition metals such as iron are outside the reach of “stan-
dard” pseudopotential of DFT which, even when non linear core corrections
are adopted, include them in the frozen atomic core. In this work we present
an analysis of several pseudopotentials for iron generated in the Troullier Mar-
tins and Hamann scheme assuming both local density and generalized gradient
approximations (LDA, GGA) for the exchange–correlation functional and con-
sidering core-valence partitions with and without including semicore orbitals
among valence states. Non linear core corrections are considered and the pseu-
dopotential transferability has been checked. We calculate structural and elec-
tronic properties of the α phase of iron and we present a comparison between
calculated optical conductivity and experimental data.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Keywords:
optical conductivity ; pseudopotentials ; iron
Elenco autori:
L. Caramella, D. Tavella, G. Onida
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