High-temperature Superconductivity in Perovskite Hydride below 10 GPa
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866917712977985536 |
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| author | Du, Mingyang Huang, Hongyu Zhang, Zihan Wang, Min Song, Hao Duan, Defang Cui, Tian |
| author_facet | Du, Mingyang Huang, Hongyu Zhang, Zihan Wang, Min Song, Hao Duan, Defang Cui, Tian |
| contents | Hydrogen and hydrides materials have long been considered promising materials for high-temperature superconductivity. But the extreme pressures required for the metallization of hydrogen-based superconductors limit their applications. Here, we have designed a series of high-temperature perovskite hydrides that can be stable within 10 GPa. Our research covered 182 ternary systems and ultimately determined that 9 compounds were stable within 20 GPa, of which 5 exhibited superconducting transition temperatures exceeding 120 K within 10 GPa. Excitingly, KGaH3 and CsInH3 are thermodynamically stable at 50 GPa. Among these perovskite hydrides, alkali metals are responsible for providing a fixed amount of charge and maintaining structural stability, while the cubic framework formed by IIIA group elements and hydrogen is crucial for high-temperature superconductivity. This work will inspire further experimental exploration and take an important step in the exploration of low-pressure stable high-temperature superconductors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_03556 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High-temperature Superconductivity in Perovskite Hydride below 10 GPa Du, Mingyang Huang, Hongyu Zhang, Zihan Wang, Min Song, Hao Duan, Defang Cui, Tian Superconductivity Hydrogen and hydrides materials have long been considered promising materials for high-temperature superconductivity. But the extreme pressures required for the metallization of hydrogen-based superconductors limit their applications. Here, we have designed a series of high-temperature perovskite hydrides that can be stable within 10 GPa. Our research covered 182 ternary systems and ultimately determined that 9 compounds were stable within 20 GPa, of which 5 exhibited superconducting transition temperatures exceeding 120 K within 10 GPa. Excitingly, KGaH3 and CsInH3 are thermodynamically stable at 50 GPa. Among these perovskite hydrides, alkali metals are responsible for providing a fixed amount of charge and maintaining structural stability, while the cubic framework formed by IIIA group elements and hydrogen is crucial for high-temperature superconductivity. This work will inspire further experimental exploration and take an important step in the exploration of low-pressure stable high-temperature superconductors. |
| title | High-temperature Superconductivity in Perovskite Hydride below 10 GPa |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2407.03556 |