About the strength of correlation effects in the electronic structure of iron

Autor:	Sanchez-Barriga, J., Fink, J., Boni, V., Di Marco, I., Braun, J., Minar, J., Varykhalov, A., Rader, O., Bellini, V., Manghi, F., Ebert, H., Katsnelson, M. I., Lichtenstein, A. I., Eriksson, O., Eberhardt, W., Duerr, H. A.
Rok vydání:	2009
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Other Condensed Matter
Zdroj:	Phys. Rev. Lett. 103, 267203 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.103.267203
Popis:	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 non-local fluctuations. Comment: 4 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0910.4360 Zobrazit plný text záznamu View this record from Arxiv