Displaced Drude peak from $π$-ton vertex corrections
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915260152152064 |
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| author | Krsnik, J. Simard, O. Werner, P. Kauch, A. Held, K. |
| author_facet | Krsnik, J. Simard, O. Werner, P. Kauch, A. Held, K. |
| contents | Correlated electron systems often show strong bosonic fluctuations, e.g., of antiferromagnetic nature, around a large wave vector such as $\mathbf{q}=(π,π\ldots)$. These fluctuations can give rise to vertex corrections to the optical conductivity through the (transversal) particle-hole channel, coined $π$-ton contributions. Previous numerical results differed qualitatively on how such vertex corrections alter the optical conductivity. Here, we clarify that $π$-ton vertex corrections lead to a displaced Drude peak for correlated metals. The proximity and enhancement of the effect when approaching a phase transition of, e.g., antiferromagnetic nature can be utilized for discriminating $π$-tons in experiments from other physics leading to a displaced Drude peak. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_16104 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Displaced Drude peak from $π$-ton vertex corrections Krsnik, J. Simard, O. Werner, P. Kauch, A. Held, K. Strongly Correlated Electrons Correlated electron systems often show strong bosonic fluctuations, e.g., of antiferromagnetic nature, around a large wave vector such as $\mathbf{q}=(π,π\ldots)$. These fluctuations can give rise to vertex corrections to the optical conductivity through the (transversal) particle-hole channel, coined $π$-ton contributions. Previous numerical results differed qualitatively on how such vertex corrections alter the optical conductivity. Here, we clarify that $π$-ton vertex corrections lead to a displaced Drude peak for correlated metals. The proximity and enhancement of the effect when approaching a phase transition of, e.g., antiferromagnetic nature can be utilized for discriminating $π$-tons in experiments from other physics leading to a displaced Drude peak. |
| title | Displaced Drude peak from $π$-ton vertex corrections |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2402.16104 |