Pair correlations in the two-orbital Hubbard ladder: Implications for superconductivity in the bilayer nickelate La3Ni2O7
Tatsuya Kaneko, Hirofumi Sakakibara, Masayuki Ochi, Kazuhiko Kuroki
DOI 10.1103/PhysRevB.109.045154 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Motivated by high-temperature superconductivity in pressurized La3Ni2O7, we investigate the pair correlations in the two-orbital Hubbard ladder, which consists of the nearly half-filled and nearly quarter-filled orbitals. By employing the density matrix renormalization group method, we demonstrate that the pair correlation exhibits a power-law decay against the distance while the spin correlation decays exponentially. The decay exponent of the pair correlation of the nearly half-filled orbital is comparable to the exponent of the quasi-long-range superconducting correlation in the doped single-orbital Hubbard ladder, which suggests the importance of the d3z2−r2 orbital in La3Ni2O7.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La3Ni2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Orbital-selective superconductivity in the pressurized bilayer nickelate La3Ni2O7: An infinite projected entangled-pair state study
similarity 0.96Jialin Chen et al.
Source status unknown — claims are unverified
Importance of the crystal structure for superconductivity in infinite-layered nickel oxides
similarity 0.94Álvaro Adrián Carrasco Álvarez et al.
Source status unknown — claims are unverified
Superconductivity in an imbalanced bilayer Hubbard model: Enhanced d-wave and weakened s±-wave pairing
similarity 0.94Ziying Jia et al.
Source status unknown — claims are unverified
Correlation effects and concomitant two-orbital s±-wave superconductivity in La3Ni2O7 under high pressure
similarity 0.94Yi-Heng Tian et al.
Source status unknown — claims are unverified
Lattice-Charge Coupling in a Trilayer Nickelate with Intertwined Density Wave Order
similarity 0.94Xun Jia et al.
Source status unknown — claims are unverified
Calculations of spin fluctuation spectral functions α2F in high-temperature superconducting cuprates
similarity 0.94Griffin Heier & Sergey Y. Savrasov
Source status unknown — claims are unverified