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Large effects of subtle electronic correlations on the energetics of vacancies in α-Fe
Abstract : We study the effect of electronic Coulomb correlations on the vacancy formation energy in para-magnetic α-Fe within ab initio dynamical mean-field theory. The calculated value for the formation energy is substantially lower than in standard density-functional calculations and in excellent agreement with experiment. The reduction is caused by an enhancement of electronic correlations at the nearest neighbors of the vacancy. This effect is explained by subtle changes in the corresponding spectral function of the d-electrons. The local lattice relaxations around the vacancy are substantially increased by many-body effects.
Cited literature [80 references]
https://hal-cea.archives-ouvertes.fr/cea-01341606
Contributor : Emmanuelle de Laborderie Connect in order to contact the contributor
Submitted on : Monday, July 4, 2016 - 2:50:06 PM
Last modification on : Monday, December 13, 2021 - 9:16:04 AM
Long-term archiving on: : Wednesday, October 5, 2016 - 3:33:15 PM
Contributor : Emmanuelle de Laborderie Connect in order to contact the contributor
Submitted on : Monday, July 4, 2016 - 2:50:06 PM
Last modification on : Monday, December 13, 2021 - 9:16:04 AM
Long-term archiving on: : Wednesday, October 5, 2016 - 3:33:15 PM
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1606.05121v1.pdf
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