Identification of the superconductivity in bilayer nickelate La$_3$Ni$_2$O$_7$ upon 100 GPa
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| Autores principales: | , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916766661214208 |
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| author | Li, Jingyuan Peng, Di Ma, Peiyue Zhang, Hengyuan Xing, Zhenfang Huang, Xing Huang, Chaoxin Huo, Mengwu Hu, Deyuan Dong, Zixian Chen, Xiang Xie, Tao Dong, Hongliang Sun, Hualei Zeng, Qiaoshi Mao, Ho-kwang Wang, Meng |
| author_facet | Li, Jingyuan Peng, Di Ma, Peiyue Zhang, Hengyuan Xing, Zhenfang Huang, Xing Huang, Chaoxin Huo, Mengwu Hu, Deyuan Dong, Zixian Chen, Xiang Xie, Tao Dong, Hongliang Sun, Hualei Zeng, Qiaoshi Mao, Ho-kwang Wang, Meng |
| contents | Identification of superconductivity in the Ruddlesden-Popper phases of nickelates under high pressure remains challenging. Here, we report a comprehensive study of the crystal structure, resistance, and Meissner effect in single crystals of La$_3$Ni$_2$O$_7$ with hydrostatic pressures up to 104 GPa. X-ray diffraction measurements reveal a structural transition from the orthorhombic to a tetragonal phase above 40 GPa. Zero resistance of the superconductivity was achieved with a maximum onset $T_c^{onset}$ of 83 K at 18.0 GPa. Superconductivity is gradually suppressed until it disappears above 80 GPa, resulting in a right-triangle-like superconducting region. The direct-current magnetic susceptibility technique successfully detected the Meissner effect in La$_3$Ni$_2$O$_7$ under pressure; the maximum superconducting volume fraction is estimated to be 62.7% at 22.0 GPa. Thus, we demonstrate the bulk nature of superconductivity in the bilayer nickelate La$_3$Ni$_2$O$_7$ single crystals under high pressure. The results reveal intimate connections among the superconductivity, oxygen content, and structure in La$_3$Ni$_2$O$_7$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_11369 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Identification of the superconductivity in bilayer nickelate La$_3$Ni$_2$O$_7$ upon 100 GPa Li, Jingyuan Peng, Di Ma, Peiyue Zhang, Hengyuan Xing, Zhenfang Huang, Xing Huang, Chaoxin Huo, Mengwu Hu, Deyuan Dong, Zixian Chen, Xiang Xie, Tao Dong, Hongliang Sun, Hualei Zeng, Qiaoshi Mao, Ho-kwang Wang, Meng Superconductivity Strongly Correlated Electrons Identification of superconductivity in the Ruddlesden-Popper phases of nickelates under high pressure remains challenging. Here, we report a comprehensive study of the crystal structure, resistance, and Meissner effect in single crystals of La$_3$Ni$_2$O$_7$ with hydrostatic pressures up to 104 GPa. X-ray diffraction measurements reveal a structural transition from the orthorhombic to a tetragonal phase above 40 GPa. Zero resistance of the superconductivity was achieved with a maximum onset $T_c^{onset}$ of 83 K at 18.0 GPa. Superconductivity is gradually suppressed until it disappears above 80 GPa, resulting in a right-triangle-like superconducting region. The direct-current magnetic susceptibility technique successfully detected the Meissner effect in La$_3$Ni$_2$O$_7$ under pressure; the maximum superconducting volume fraction is estimated to be 62.7% at 22.0 GPa. Thus, we demonstrate the bulk nature of superconductivity in the bilayer nickelate La$_3$Ni$_2$O$_7$ single crystals under high pressure. The results reveal intimate connections among the superconductivity, oxygen content, and structure in La$_3$Ni$_2$O$_7$. |
| title | Identification of the superconductivity in bilayer nickelate La$_3$Ni$_2$O$_7$ upon 100 GPa |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2404.11369 |