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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.09920 |
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| _version_ | 1866909626741555200 |
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| author | Cheng, Di Jiang, Tao Zhang, Feng Gu, Genda Luo, Liang Huang, Chuankun Song, Boqun Mootz, Martin Khatri, Avinash Park, Joong-Mok Li, Qiang Yao, Yongxin Wang, Jigang |
| author_facet | Cheng, Di Jiang, Tao Zhang, Feng Gu, Genda Luo, Liang Huang, Chuankun Song, Boqun Mootz, Martin Khatri, Avinash Park, Joong-Mok Li, Qiang Yao, Yongxin Wang, Jigang |
| contents | We explore the Fano resonance in ZrTe5, using Raman scattering measurements. We identified two closely spaced B2g phonon modes, B2g I and B2g II, around 9 meV and 10 meV, respectively. Interestingly, only B2g I exhibited the Fano resonance, an outcome of quantum interference between discrete phonon modes and continuous electronic excitations. This is consistent with the much stronger electron-phonon coupling of B2g I mode demonstrated by first-principles calculations. Additionally, temperature-dependent measurements highlight an enhanced Fano asymmetry at elevated temperatures, contributed by the thermal renormalization of the band structure and electron-phonon coupling. This study offers insights into the complex interrelation of electron-phonon coupling, thermal effects, and Fano resonances in ZrTe5. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_09920 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Revealing Fano Resonance in Dirac Materials ZrTe5 through Raman Scattering Cheng, Di Jiang, Tao Zhang, Feng Gu, Genda Luo, Liang Huang, Chuankun Song, Boqun Mootz, Martin Khatri, Avinash Park, Joong-Mok Li, Qiang Yao, Yongxin Wang, Jigang Materials Science We explore the Fano resonance in ZrTe5, using Raman scattering measurements. We identified two closely spaced B2g phonon modes, B2g I and B2g II, around 9 meV and 10 meV, respectively. Interestingly, only B2g I exhibited the Fano resonance, an outcome of quantum interference between discrete phonon modes and continuous electronic excitations. This is consistent with the much stronger electron-phonon coupling of B2g I mode demonstrated by first-principles calculations. Additionally, temperature-dependent measurements highlight an enhanced Fano asymmetry at elevated temperatures, contributed by the thermal renormalization of the band structure and electron-phonon coupling. This study offers insights into the complex interrelation of electron-phonon coupling, thermal effects, and Fano resonances in ZrTe5. |
| title | Revealing Fano Resonance in Dirac Materials ZrTe5 through Raman Scattering |
| topic | Materials Science |
| url | https://arxiv.org/abs/2410.09920 |