Structural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressure
Abstract Motivated by the recently discovered high-T c superconductor La3Ni2O7, we comprehensively study this system using density functional theory and random phase approximation calculations. At low pressures, the Amam phase is stable, containing the Y2− mode distortion from the Fmmm phase, while...
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| Format: | Article |
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Nature Portfolio
2024-03-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-46622-z |
| _version_ | 1797247107289055232 |
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| author | Yang Zhang Ling-Fang Lin Adriana Moreo Thomas A. Maier Elbio Dagotto |
| author_facet | Yang Zhang Ling-Fang Lin Adriana Moreo Thomas A. Maier Elbio Dagotto |
| author_sort | Yang Zhang |
| collection | DOAJ |
| description | Abstract Motivated by the recently discovered high-T c superconductor La3Ni2O7, we comprehensively study this system using density functional theory and random phase approximation calculations. At low pressures, the Amam phase is stable, containing the Y2− mode distortion from the Fmmm phase, while the Fmmm phase is unstable. Because of small differences in enthalpy and a considerable Y2− mode amplitude, the two phases may coexist in the range between 10.6 and 14 GPa, beyond which the Fmmm phase dominates. In addition, the magnetic stripe-type spin order with wavevector (π, 0) was stable at the intermediate region. Pairing is induced in the s ±-wave channel due to partial nesting between the M = (π, π) centered pockets and portions of the Fermi surface centered at the X = (π, 0) and Y = (0, π) points. This resembles results for iron-based superconductors but has a fundamental difference with iron pnictides and selenides. Moreover, our present efforts also suggest La3Ni2O7 is qualitatively different from infinite-layer nickelates and cuprate superconductors. |
| first_indexed | 2024-04-24T19:53:26Z |
| format | Article |
| id | doaj.art-0225b17e9d5141d5a0a8e2fc3bdf37be |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-24T19:53:26Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-0225b17e9d5141d5a0a8e2fc3bdf37be2024-03-24T12:26:58ZengNature PortfolioNature Communications2041-17232024-03-0115111110.1038/s41467-024-46622-zStructural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressureYang Zhang0Ling-Fang Lin1Adriana Moreo2Thomas A. Maier3Elbio Dagotto4Department of Physics and Astronomy, University of TennesseeDepartment of Physics and Astronomy, University of TennesseeDepartment of Physics and Astronomy, University of TennesseeComputational Sciences and Engineering Division, Oak Ridge National LaboratoryDepartment of Physics and Astronomy, University of TennesseeAbstract Motivated by the recently discovered high-T c superconductor La3Ni2O7, we comprehensively study this system using density functional theory and random phase approximation calculations. At low pressures, the Amam phase is stable, containing the Y2− mode distortion from the Fmmm phase, while the Fmmm phase is unstable. Because of small differences in enthalpy and a considerable Y2− mode amplitude, the two phases may coexist in the range between 10.6 and 14 GPa, beyond which the Fmmm phase dominates. In addition, the magnetic stripe-type spin order with wavevector (π, 0) was stable at the intermediate region. Pairing is induced in the s ±-wave channel due to partial nesting between the M = (π, π) centered pockets and portions of the Fermi surface centered at the X = (π, 0) and Y = (0, π) points. This resembles results for iron-based superconductors but has a fundamental difference with iron pnictides and selenides. Moreover, our present efforts also suggest La3Ni2O7 is qualitatively different from infinite-layer nickelates and cuprate superconductors.https://doi.org/10.1038/s41467-024-46622-z |
| spellingShingle | Yang Zhang Ling-Fang Lin Adriana Moreo Thomas A. Maier Elbio Dagotto Structural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressure Nature Communications |
| title | Structural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressure |
| title_full | Structural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressure |
| title_fullStr | Structural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressure |
| title_full_unstemmed | Structural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressure |
| title_short | Structural phase transition, s ±-wave pairing, and magnetic stripe order in bilayered superconductor La3Ni2O7 under pressure |
| title_sort | structural phase transition s wave pairing and magnetic stripe order in bilayered superconductor la3ni2o7 under pressure |
| url | https://doi.org/10.1038/s41467-024-46622-z |
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