Disentangling Electron-Boson Interactions on the Surface of a Familiar Ferromagnet
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2022
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| Materias: | |
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| _version_ | 1866909076289486848 |
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| author | Røst, Håkon I. Mazzola, Federico Bakkelund, Johannes Åsland, Anna Cecilie Hu, Jinbang Cooil, Simon P. Polley, Craig M. Wells, Justin W. |
| author_facet | Røst, Håkon I. Mazzola, Federico Bakkelund, Johannes Åsland, Anna Cecilie Hu, Jinbang Cooil, Simon P. Polley, Craig M. Wells, Justin W. |
| contents | We report energy renormalizations from electron-phonon and electron-magnon interactions in spin minority surface resonances on Ni(111). The different interactions are identified, disentangled, and quantified from the characteristic signatures they provide to the complex self-energy and the largely different binding energies at which they occur. The observed electron-magnon interactions exhibit a strong dependence on momentum and energy band position in the bulk Brillouin zone. In contrast, electron-phonon interactions from the same bands appear to be relatively momentum- and symmetry-independent. Additionally, a moderately strong ($λ>0.5$) electron-phonon interaction is distinguished from a near-parabolic spin majority band not crossing the Fermi level. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_01431 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Disentangling Electron-Boson Interactions on the Surface of a Familiar Ferromagnet Røst, Håkon I. Mazzola, Federico Bakkelund, Johannes Åsland, Anna Cecilie Hu, Jinbang Cooil, Simon P. Polley, Craig M. Wells, Justin W. Materials Science We report energy renormalizations from electron-phonon and electron-magnon interactions in spin minority surface resonances on Ni(111). The different interactions are identified, disentangled, and quantified from the characteristic signatures they provide to the complex self-energy and the largely different binding energies at which they occur. The observed electron-magnon interactions exhibit a strong dependence on momentum and energy band position in the bulk Brillouin zone. In contrast, electron-phonon interactions from the same bands appear to be relatively momentum- and symmetry-independent. Additionally, a moderately strong ($λ>0.5$) electron-phonon interaction is distinguished from a near-parabolic spin majority band not crossing the Fermi level. |
| title | Disentangling Electron-Boson Interactions on the Surface of a Familiar Ferromagnet |
| topic | Materials Science |
| url | https://arxiv.org/abs/2211.01431 |