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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2312.12706 |
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| _version_ | 1866911056301916160 |
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| author | Xie, Chendi Smith, Adam D. Yan, Haoran Chen, Wei-Chih Wang, Yao |
| author_facet | Xie, Chendi Smith, Adam D. Yan, Haoran Chen, Wei-Chih Wang, Yao |
| contents | Metallic hydrogen and hydride materials stand as promising avenues to achieve room-temperature superconductivity. Characterized by their high phonon frequencies and moderate coupling strengths, several high-pressure hydrides were theoretically predicted to exhibit transition temperatures ($T_c$) exceeding 250\,K, a claim further substantiated by experimental evidence. In an effort to push $T_c$ beyond room temperature, we introduce a dynamical method that involves stimulating hydrides with mid-infrared lasers. Employing Floquet first-principles simulations, we observe that in a nonequilibrium state induced by light, both the electronic density of states and the coupling to high-energy phonons see notable enhancements. These simultaneous improvements collectively result in an estimated 20\%-30\% rise in $T_c$ in practical pump conditions. Our theoretical investigation, therefore, offers a novel strategy to potentially raise the $T_c$ of hydrides above room temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_12706 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Dynamical Approach to Realize Room-Temperature Superconductivity in LaH$_{10}$ Xie, Chendi Smith, Adam D. Yan, Haoran Chen, Wei-Chih Wang, Yao Superconductivity Metallic hydrogen and hydride materials stand as promising avenues to achieve room-temperature superconductivity. Characterized by their high phonon frequencies and moderate coupling strengths, several high-pressure hydrides were theoretically predicted to exhibit transition temperatures ($T_c$) exceeding 250\,K, a claim further substantiated by experimental evidence. In an effort to push $T_c$ beyond room temperature, we introduce a dynamical method that involves stimulating hydrides with mid-infrared lasers. Employing Floquet first-principles simulations, we observe that in a nonequilibrium state induced by light, both the electronic density of states and the coupling to high-energy phonons see notable enhancements. These simultaneous improvements collectively result in an estimated 20\%-30\% rise in $T_c$ in practical pump conditions. Our theoretical investigation, therefore, offers a novel strategy to potentially raise the $T_c$ of hydrides above room temperature. |
| title | Dynamical Approach to Realize Room-Temperature Superconductivity in LaH$_{10}$ |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2312.12706 |