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arXiv · 0904.2344

Renormalization of Bulk Magnetic Electron States at High Binding Energies

A. Hofmann·X. Y. Cui·J. Schaefer·S. Meyer·P. Hoepfner·C. Blumenstein·M. Paul·L. Patthey·E. Rotenberg·J. Buenemann·F. Gebhard·T. Ohm·W. Weber·R. Claessen
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Abstract

The quasiparticle dynamics of electrons in a magnetically ordered state is investigated by high-resolution angle-resolved photoemission of Ni(110) at 10 K. The self-energy is extracted for high binding energies reaching up to 500 meV, using a Gutzwiller calculation as a reference frame for correlated quasiparticles. Significant deviations exist in the 300 meV range, as identified on magnetic bulk bands for the first time. The discrepancy is strikingly well described by a self-energy model assuming interactions with spin excitations. Implications relating to different electron-electron correlation regimes are discussed.

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A. Hofmann, X. Y. Cui, J. Schaefer, S. Meyer, P. Hoepfner, C. Blumenstein, M. Paul, L. Patthey, E. Rotenberg, J. Buenemann, F. Gebhard, T. Ohm, W. Weber, R. Claessen. 2009-04-15. Renormalization of Bulk Magnetic Electron States at High Binding Energies. https://doi.org/10.1103/physrevlett.102.187204

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