Electron doping enhances s±-wave superconductivity in bulk La3Ni2O7 and its heterostructure with La3Al2O7, yielding highest Tc in the underdoped heterostructure via inter-orbital d_x2-y2 and d_z2 cooperation.
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ARPES on (La,Pr,Sm)3Ni2O7 films reveals quasi-2D dx2-y2 bands, finite kz dispersion on dz2 bands, and a superconducting gap of ~18 meV with 2Δ/kBTc ~8 on the dz2-derived band.
The superconducting T_c of La3Ni2O7 is controlled by the d_x2-y2 orbital filling and the interlayer magnetic exchange J_perp, so clean electron doping should raise T_c.
The review covers experimental and theoretical progress on superconductivity in Ruddlesden-Popper nickelates, emphasizing ambient-pressure thin-film results in La3Ni2O7.
citing papers explorer
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Enhanced $s^\pm$-wave superconductivity in electron-doped La$_3$Ni$_2$O$_7$
Electron doping enhances s±-wave superconductivity in bulk La3Ni2O7 and its heterostructure with La3Al2O7, yielding highest Tc in the underdoped heterostructure via inter-orbital d_x2-y2 and d_z2 cooperation.
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Three-Dimensional Electronic Structures in Superconducting Ruddlesden-Popper Bilayer Nickelate Films
ARPES on (La,Pr,Sm)3Ni2O7 films reveals quasi-2D dx2-y2 bands, finite kz dispersion on dz2 bands, and a superconducting gap of ~18 meV with 2Δ/kBTc ~8 on the dz2-derived band.
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Filling and Interlayer Superexchange Control Superconductivity in La$_3$Ni$_2$O$_7$
The superconducting T_c of La3Ni2O7 is controlled by the d_x2-y2 orbital filling and the interlayer magnetic exchange J_perp, so clean electron doping should raise T_c.
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Superconductivity in Ruddlesden-Popper nickelates: a review of recent progress, focusing on thin films
The review covers experimental and theoretical progress on superconductivity in Ruddlesden-Popper nickelates, emphasizing ambient-pressure thin-film results in La3Ni2O7.
- Orbital-Selective Diagonal-Gap Test of Pairing in La$_3$Ni$_2$O$_7$
- Electron Doping of $\mathrm{La_3Ni_2O_7}$ Thin Films: Candidate Metal Dopants and Their Potential Impact on Superconductivity
- Perpendicular electric field induced competing $s^\pm$- and $d$-wave pairings in La$_3$Ni$_2$O$_7$ thin film