Volume 61, Number 5, March 2003
|Page(s)||667 - 673|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 February 2003|
Atomic correlations in itinerant ferromagnets: Quasi-particle bands of nickel
Oxford University, Physics and Theoretical Chemistry Laboratory Oxford OX1 3QZ, UK
2 Fachbereich Physik, Philipps-Universität Marburg - D-35032 Marburg, Germany
3 Institut für Physik, Universität Dortmund - D-44221 Dortmund, Germany
4 Experimentalphysik II, Universität Augsburg - D-86135 Augsburg, Germany
5 Experimentalphysik, Universität des Saarlandes - D-66041 Saarbrücken, Germany
6 Institute for Solid-State Physics, University of Tokyo Kashiwa, Chiba 277-8581, Japan
7 Department of Physical Sciences, Hiroshima University Higashi, Hiroshima 739-8526, Japan
Accepted: 12 December 2002
The Gutzwiller theory is demonstrated to resolve most of the long-standing discrepancies between experiment and theory on the quasi-particle bands of ferromagnetic nickel. This is confirmed by new angle-resolved photoelectron spectroscopy data along various high-symmetry lines of the bulk Brillouin zone obtained under full control of the three-dimensional momentum. Our findings support the view of itinerant ferromagnetism as a consequence of atomic correlations.
PACS: 71.20.Be – Transition metals and alloys / 71.10.Fd – Lattice fermion models (Hubbard model, etc.) / 71.10.Ay – Fermi-liquid theory and other phenomenological models
© EDP Sciences, 2003
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