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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2406.01516 |
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| _version_ | 1866911900762112000 |
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| author | Böhm, Thomas U. Sirica, Nicholas S. Jang, Bo Gyu Liu, Yu Bauer, Eric D. Huang, Yue Homes, Christopher C. Zhu, Jian-Xin Ronning, Filip |
| author_facet | Böhm, Thomas U. Sirica, Nicholas S. Jang, Bo Gyu Liu, Yu Bauer, Eric D. Huang, Yue Homes, Christopher C. Zhu, Jian-Xin Ronning, Filip |
| contents | The optical conductivity $σ(ω,T)$ of CeRhSn was studied by broadband infrared spectroscopy. Temperature-dependent spectral weight transfer occurs over high energy ($0.8\,$eV) and temperature (${\sim}500\,$K) scales, classifying CeRhSn as a mixed valent compound. The optical conductivity reveals a substantial anisotropy in the electronic structure. Renormalization of $σ(ω,T)$ occurs as a function of temperature to a coherent Kondo state with concomitant effective mass generation. Associated spectroscopic signatures were reproduced remarkably well by the combination of density functional theory and dynamical mean field theory using a momentum-independent self energy. The theory shows that the anisotropy for energies $>10\,$meV is mainly driven by the bare three-dimensional electronic structure that is renormalized by local electronic correlations. The possible influence of magnetic frustration and quantum criticality is restricted to lower energies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_01516 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anisotropic hybridization in CeRhSn Böhm, Thomas U. Sirica, Nicholas S. Jang, Bo Gyu Liu, Yu Bauer, Eric D. Huang, Yue Homes, Christopher C. Zhu, Jian-Xin Ronning, Filip Strongly Correlated Electrons The optical conductivity $σ(ω,T)$ of CeRhSn was studied by broadband infrared spectroscopy. Temperature-dependent spectral weight transfer occurs over high energy ($0.8\,$eV) and temperature (${\sim}500\,$K) scales, classifying CeRhSn as a mixed valent compound. The optical conductivity reveals a substantial anisotropy in the electronic structure. Renormalization of $σ(ω,T)$ occurs as a function of temperature to a coherent Kondo state with concomitant effective mass generation. Associated spectroscopic signatures were reproduced remarkably well by the combination of density functional theory and dynamical mean field theory using a momentum-independent self energy. The theory shows that the anisotropy for energies $>10\,$meV is mainly driven by the bare three-dimensional electronic structure that is renormalized by local electronic correlations. The possible influence of magnetic frustration and quantum criticality is restricted to lower energies. |
| title | Anisotropic hybridization in CeRhSn |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2406.01516 |