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- Sanchez-Barriga, J., et al.
(författare)
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Strength of Correlation Effects in the Electronic Structure of Iron
- 2009
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 103:26, s. 267203-
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Tidskriftsartikel (refereegranskat)abstract
- The strength of electronic correlation effects in the spin-dependent electronic structure of ferromagnetic bcc Fe(110) has been investigated by means of spin and angle-resolved photoemission spectroscopy. The experimental results are compared to theoretical calculations within the three-body scattering approximation and within the dynamical mean-field theory, together with one-step model calculations of the photoemission process. This comparison indicates that the present state of the art many-body calculations, although improving the description of correlation effects in Fe, give too small mass renormalizations and scattering rates thus demanding more refined many-body theories including nonlocal fluctuations.
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