Superconductivity in atom-intercalated quaternary hydrides under ambient pressure
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915446896197632 |
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| author | Yao, Bo-Wen Ouyang, Zhenfeng Han, Xiao-Qi Wu, Chang-Jiang Guo, Peng-Jie Gao, Ze-Feng Lu, Zhong-Yi |
| author_facet | Yao, Bo-Wen Ouyang, Zhenfeng Han, Xiao-Qi Wu, Chang-Jiang Guo, Peng-Jie Gao, Ze-Feng Lu, Zhong-Yi |
| contents | Hydrogen-rich materials are the most promising candidates for high-temperature conventional superconductors under ambient pressure. Multinary hydrides have abundant structural configurations and are more promising to find high-temperature superconductors at ambient pressure, but searching for multinary materials in complex phase space is a great challenge. In this work, we used our developed AI search engine (InvDesFlow) to perform extensive investigations regarding ambient stable superconducting hydrides. Several quaternary hydrides with high superconducting temperature~($T_c$) are predicted. In particular, the superconducting $T_c$ of K$_2$GaCuH$_6$ and K$_2$LiCuH$_6$ are calculated to be 68~K and 53~K under ambient pressure, respectively, which shows a significant enhancement in comparison with that of K$_2$CuH$_6$~($T_c$ $\sim$ 16~K). We also find that intercalating atoms could cause phonon softening and induce more phonon modes with strong electron-phonon coupling. Hence, we propose that intercalating atoms is a feasible approach in searching for superconducting quaternary hydrides. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_10912 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Superconductivity in atom-intercalated quaternary hydrides under ambient pressure Yao, Bo-Wen Ouyang, Zhenfeng Han, Xiao-Qi Wu, Chang-Jiang Guo, Peng-Jie Gao, Ze-Feng Lu, Zhong-Yi Superconductivity Materials Science Hydrogen-rich materials are the most promising candidates for high-temperature conventional superconductors under ambient pressure. Multinary hydrides have abundant structural configurations and are more promising to find high-temperature superconductors at ambient pressure, but searching for multinary materials in complex phase space is a great challenge. In this work, we used our developed AI search engine (InvDesFlow) to perform extensive investigations regarding ambient stable superconducting hydrides. Several quaternary hydrides with high superconducting temperature~($T_c$) are predicted. In particular, the superconducting $T_c$ of K$_2$GaCuH$_6$ and K$_2$LiCuH$_6$ are calculated to be 68~K and 53~K under ambient pressure, respectively, which shows a significant enhancement in comparison with that of K$_2$CuH$_6$~($T_c$ $\sim$ 16~K). We also find that intercalating atoms could cause phonon softening and induce more phonon modes with strong electron-phonon coupling. Hence, we propose that intercalating atoms is a feasible approach in searching for superconducting quaternary hydrides. |
| title | Superconductivity in atom-intercalated quaternary hydrides under ambient pressure |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2508.10912 |