Chemical versus physical pressure effects on the structure transition of bilayer nickelates
Abstract The observation of high-T c superconductivity (HTSC) in concomitant with pressure-induced orthorhombic-tetragonal structural transition in bilayer La3Ni2O7 has sparked hopes of achieving HTSC by stabilizing the tetragonal phase at ambient pressure. Chemical pressure, introduced by replacing...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-024-00721-8 |
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| _version_ | 1841559900686123008 |
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| author | Gang Wang Ningning Wang Tenglong Lu Stuart Calder Jiaqiang Yan Lifen Shi Jun Hou Liang Ma Lili Zhang Jianping Sun Bosen Wang Sheng Meng Miao Liu Jinguang Cheng |
| author_facet | Gang Wang Ningning Wang Tenglong Lu Stuart Calder Jiaqiang Yan Lifen Shi Jun Hou Liang Ma Lili Zhang Jianping Sun Bosen Wang Sheng Meng Miao Liu Jinguang Cheng |
| author_sort | Gang Wang |
| collection | DOAJ |
| description | Abstract The observation of high-T c superconductivity (HTSC) in concomitant with pressure-induced orthorhombic-tetragonal structural transition in bilayer La3Ni2O7 has sparked hopes of achieving HTSC by stabilizing the tetragonal phase at ambient pressure. Chemical pressure, introduced by replacing La3+ with smaller rare-earth R 3+ has been considered as a potential route. However, our experimental and theoretical investigation reveals that such substitutions, despite causing lattice contraction, actually produce stronger orthorhombic distortions, requiring higher pressures for the structural transition. A linear extrapolation of P c versus the average size of A-site cations (<r A >), yields a putative critical value of <r A >c ≈ 1.23 Å for P c ≈ 1 bar. The negative correlation between P c and <r A > indicates that replacing La3+ with smaller R 3+ ions is unlikely to reduce P c to ambient pressure. Instead, substituting La3+ with larger cations like Sr2+ or Ba2+ might be a feasible approach. Our results provide guidance for realizing ambient-pressure HTSC in bilayer nickelates. |
| format | Article |
| id | doaj-art-9ebccc2fa4fb44bf924dbec3d9e81d5d |
| institution | Kabale University |
| issn | 2397-4648 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj-art-9ebccc2fa4fb44bf924dbec3d9e81d5d2025-01-05T12:07:51ZengNature Portfolionpj Quantum Materials2397-46482025-01-011011710.1038/s41535-024-00721-8Chemical versus physical pressure effects on the structure transition of bilayer nickelatesGang Wang0Ningning Wang1Tenglong Lu2Stuart Calder3Jiaqiang Yan4Lifen Shi5Jun Hou6Liang Ma7Lili Zhang8Jianping Sun9Bosen Wang10Sheng Meng11Miao Liu12Jinguang Cheng13Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesNeutron Scattering Division, Oak Ridge National LaboratoryMaterials Science and Technology Division, Oak Ridge National LaboratoryBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesShanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of SciencesAbstract The observation of high-T c superconductivity (HTSC) in concomitant with pressure-induced orthorhombic-tetragonal structural transition in bilayer La3Ni2O7 has sparked hopes of achieving HTSC by stabilizing the tetragonal phase at ambient pressure. Chemical pressure, introduced by replacing La3+ with smaller rare-earth R 3+ has been considered as a potential route. However, our experimental and theoretical investigation reveals that such substitutions, despite causing lattice contraction, actually produce stronger orthorhombic distortions, requiring higher pressures for the structural transition. A linear extrapolation of P c versus the average size of A-site cations (<r A >), yields a putative critical value of <r A >c ≈ 1.23 Å for P c ≈ 1 bar. The negative correlation between P c and <r A > indicates that replacing La3+ with smaller R 3+ ions is unlikely to reduce P c to ambient pressure. Instead, substituting La3+ with larger cations like Sr2+ or Ba2+ might be a feasible approach. Our results provide guidance for realizing ambient-pressure HTSC in bilayer nickelates.https://doi.org/10.1038/s41535-024-00721-8 |
| spellingShingle | Gang Wang Ningning Wang Tenglong Lu Stuart Calder Jiaqiang Yan Lifen Shi Jun Hou Liang Ma Lili Zhang Jianping Sun Bosen Wang Sheng Meng Miao Liu Jinguang Cheng Chemical versus physical pressure effects on the structure transition of bilayer nickelates npj Quantum Materials |
| title | Chemical versus physical pressure effects on the structure transition of bilayer nickelates |
| title_full | Chemical versus physical pressure effects on the structure transition of bilayer nickelates |
| title_fullStr | Chemical versus physical pressure effects on the structure transition of bilayer nickelates |
| title_full_unstemmed | Chemical versus physical pressure effects on the structure transition of bilayer nickelates |
| title_short | Chemical versus physical pressure effects on the structure transition of bilayer nickelates |
| title_sort | chemical versus physical pressure effects on the structure transition of bilayer nickelates |
| url | https://doi.org/10.1038/s41535-024-00721-8 |
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