%0 Journal Article %1 Katsnelson1999 %A Katsnelson, M. I. %A Lichtenstein, A. I. %D 1999 %J Journal of Physics: Condensed Matter %K imported %N 4 %P 1037--1048 %T LDA++ approach to the electronic structure of magnets: correlation effects in iron %V 11 %X A novel approach to the investigation of correlation effects in the electronic structure of magnetic crystals which takes into account a frequency dependence of the self-energy (the so-called `LDA++ approach') is developed. The fluctuation-exchange approximation is generalized to the spin-polarized multi-band case and a local version of it is proposed. As an example, we calculate the electronic quasiparticle spectrum of ferromagnetic iron. It is shown that the Fermi-liquid description of the bands near the Fermi level is reasonable, while the quasiparticle states beyond approximately the 1 eV range are strongly damped, in agreement with photoemission data. The result of the spin-polarized thermoemission experiment is explained satisfactorily. The problem of satellite structure is discussed.

@article{Katsnelson1999, abstract = {A novel approach to the investigation of correlation effects in the electronic structure of magnetic crystals which takes into account a frequency dependence of the self-energy (the so-called `LDA++ approach') is developed. The fluctuation-exchange approximation is generalized to the spin-polarized multi-band case and a local version of it is proposed. As an example, we calculate the electronic quasiparticle spectrum of ferromagnetic iron. It is shown that the Fermi-liquid description of the bands near the Fermi level is reasonable, while the quasiparticle states beyond approximately the 1 eV range are strongly damped, in agreement with photoemission data. The result of the spin-polarized thermoemission experiment is explained satisfactorily. The problem of satellite structure is discussed.}, added-at = {2009-09-09T17:55:18.000+0200}, author = {Katsnelson, M. I. and Lichtenstein, A. I.}, biburl = {https://www.bibsonomy.org/bibtex/2915129c7aaf1e2156dacccdd1df715d4/pbuczek}, file = {Katsnelson1999.pdf:Katsnelson1999.pdf:PDF;Katsnelson1999.pdf:Katsnelson1999.pdf:PDF}, interhash = {7c0e6126d636d8cf25b1f2a43d8a1323}, intrahash = {915129c7aaf1e2156dacccdd1df715d4}, issn = {0953-8984}, journal = {Journal of Physics: Condensed Matter}, keywords = {imported}, number = 4, owner = {pbuczek}, pages = {1037--1048}, refid = {0953-8984-11-4-011}, timestamp = {2009-09-09T17:55:35.000+0200}, title = {LDA++ approach to the electronic structure of magnets: correlation effects in iron}, volume = 11, year = 1999 }