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Atomic correlations in itinerant ferromagnets: quasi-particle bands of nickel

J. Buenemann·F. Gebhard·T. Ohm·R. Umstaetter·S. Weiser·W. Weber·R. Claessen·D. Ehm·A. Harasawa·A. Kakizaki·A. Kimura·G. Nicolay·S. Shin·V. N. Strocov
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Abstract

We measure the band structure of nickel along various high-symmetry lines of the bulk Brillouin zone with angle-resolved photoelectron spectroscopy. The Gutzwiller theory for a nine-band Hubbard model whose tight-binding parameters are obtained from non-magnetic density-functional theory resolves most of the long-standing discrepancies between experiment and theory on nickel. Thereby we support the view of itinerant ferromagnetism as induced by atomic correlations.

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J. Buenemann, F. Gebhard, T. Ohm, R. Umstaetter, S. Weiser, W. Weber, R. Claessen, D. Ehm, A. Harasawa, A. Kakizaki, A. Kimura, G. Nicolay, S. Shin, V. N. Strocov. 2002-04-05. Atomic correlations in itinerant ferromagnets: quasi-particle bands of nickel. https://doi.org/10.1209/epl%2Fi2003-00128-3

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