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Angle-resolved photoemission spectroscopy study of Fe(1 1 0) single crystal: Many-body interactions between quasi-particles at the Fermi level |
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| Authors: | X.Y. Cui M. Hoesch H. Kato M. Higashiguchi H. Namatame |
| Affiliation: | a Graduate School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan b Hiroshima Synchrotron Radiation Center, Hiroshima University, Kagamiyama 2-313, Higashi-Hiroshima 739-0046, Japan c European Synchrotron Radiation Facility, 6 Rue Jules Horowitz BP220, 38043 Grenoble Cedex, France d Department of Physics, Faculty of Science, Hirosaki University, Bunkyo-Cho, Hirosaki, Aomori 036-8560, Japan e National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan |
| Abstract: | A high-resolution angle-resolved photoemission spectroscopy (ARPES) study of Fe(1 1 0) single crystal was conducted to elucidate many-body interactions between quasi-particles at the Fermi level at low-temperature. Two kink structures were observed in the energy-band dispersion at the binding energies of ∼40 meV and ∼270 meV for the bulk-derived band on the majority-spin Fermi surface around the Γ point. Based on analyses of the experimentally obtained real parts of the self-energy, these kink structures are derived from electron-phonon and electron-magnon interactions. |
| Keywords: | Angle-resolved photoemission spectroscopy Fe(1 1 0) Self-energy Electron-phonon interaction Electron-magnon interaction |
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