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arxiv: 2604.17812 · v1 · submitted 2026-04-20 · ❄️ cond-mat.supr-con · cond-mat.str-el

Pairing properties of correlated three-leg ladders with strong interchain couplings near 1/3 filling

Yushi Yamada , Tatsuya Kaneko , Masataka Kakoi , Ryota Ueda , Kazuhiko Kuroki This is my paper

Pith reviewed 2026-05-10 04:06 UTC · model grok-4.3

classification ❄️ cond-mat.supr-con cond-mat.str-el
keywords three-leg t-J ladderpair correlationsspin gaphole dopingDMRG1/3 fillingtrilayer nickelatessuperconductivity
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The pith

In three-leg t-J ladders with strong interchain couplings, hole doping near 1/3 filling produces power-law decaying pair correlations while spin correlations decay exponentially.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper studies the ground-state properties of three-leg ladders in the t-J model with strong interchain couplings near one-third filling using density-matrix renormalization group calculations. It establishes that holes doped into the spin-gapped state at this filling give rise to dominant pairing correlations that decay as power laws, accompanied by exponentially decaying spin correlations. Electron doping into the same state does not produce comparable pairing. These results are contrasted with the Hubbard model and positioned as relevant to the electronic properties of trilayer nickelate superconductors.

Core claim

At one-third filling the three-leg t-J ladder with strong interchain couplings hosts a spin-gapped state. Upon hole doping, pair correlations develop with power-law decays while spin correlations decay exponentially. Electron doping fails to induce substantial pair correlations. The authors also examine the hole-doped regime of the corresponding three-leg Hubbard model for comparison.

What carries the argument

Density-matrix renormalization group evaluation of pair and spin correlation functions in the doped three-leg t-J ladder, which distinguishes power-law from exponential decay to identify the dominant instability.

If this is right

  • Pair correlations dominate over spin correlations in the hole-doped regime near 1/3 filling.
  • The spin sector remains gapped, as shown by the exponential decay of spin correlations.
  • Electron doping into the 1/3-filled state does not produce comparable pairing tendencies.
  • The hole-electron asymmetry may influence doping-dependent behavior in related nickelate systems.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • If the pairing survives in two-dimensional extensions of the model, it could indicate a microscopic route toward superconductivity in trilayer nickelates.
  • Analogous calculations on four-leg or wider ladders would test whether the three-leg geometry is essential for the observed pairing dominance.
  • The contrast with the Hubbard model implies that projecting out double occupancy is key to stabilizing the power-law pairing.

Load-bearing premise

The t-J model with strong interchain couplings and the selected parameter regime accurately represents the low-energy physics of trilayer nickelate superconductors near 1/3 filling.

What would settle it

Experimental detection of power-law pair correlations together with exponentially decaying spin correlations in a hole-doped trilayer nickelate near 1/3 filling, or the absence of such behavior in refined DMRG runs with altered interchain coupling strengths.

Figures

Figures reproduced from arXiv: 2604.17812 by Kazuhiko Kuroki, Masataka Kakoi, Ryota Ueda, Tatsuya Kaneko, Yushi Yamada.

Figure 1
Figure 1. Figure 1: FIG. 1. (a) Three-leg [PITH_FULL_IMAGE:figures/full_fig_p001_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: FIG. 2. (a) Interchain spin correlation function [PITH_FULL_IMAGE:figures/full_fig_p002_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: presents the spin and pair correlation func￾tions in the hole-doped states away from 1/3 filling. Figures 3(a) and 3(b) shows the spin correlation func￾tions of the inner (l = 2) and outer (l = 1) chains in a semi-logarithmic plot. While the spin correlations gradually increase with hole doping, the exponential￾like decay is maintained, suggesting that the spin-singlet nature remains even with hole doping.… view at source ↗
Figure 5
Figure 5. Figure 5: FIG. 5. (a) Spin and (b) pair correlation functions in the [PITH_FULL_IMAGE:figures/full_fig_p004_5.png] view at source ↗
read the original abstract

We investigate the ground-state properties of correlated three-leg ladders near 1/3 filling. We apply the density-matrix renormalization group method to the three-leg t-J ladder with strong interchain couplings and evaluate its pairing nature. When holes are doped into the spin-gapped state at 1/3 filling, we find that pair correlations develop with power-law decays while spin correlations decay exponentially. On the other hand, doping of electrons into the 1/3-filled state does not give rise to substantial pair correlations. We also discuss the hole-doped state in the three-leg Hubbard model to compare it with the pairing state in the t-J model. Our numerical demonstrations provide insights into the electronic properties of trilayer nickelate superconductors.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The manuscript uses DMRG to study the three-leg t-J ladder (and, for comparison, the Hubbard model) with strong interchain couplings near 1/3 filling. It reports that hole doping away from the spin-gapped 1/3-filled state produces pair correlations that decay as a power law while spin correlations decay exponentially; electron doping yields no substantial pairing. These findings are presented as providing insight into the low-energy physics of trilayer nickelate superconductors.

Significance. If the reported distinction between power-law pairing and gapped spin correlations survives rigorous convergence checks, the work would supply concrete numerical evidence for pairing tendencies in a doped spin-gapped quasi-1D system, directly relevant to the ongoing discussion of superconductivity in trilayer nickelates. The hole-versus-electron doping asymmetry is a potentially falsifiable prediction.

major comments (2)
  1. [Numerical results / DMRG analysis] The central claim (power-law pair correlations versus exponential spin decay upon hole doping) is stated in the abstract and elaborated in the numerical results, yet no quantitative pair exponent, spin correlation length, finite-size scaling data (e.g., L = 24 to 72), bond-dimension convergence (e.g., chi = 1000 to 4000), or truncation-error estimates are provided. Without these, the asymptotic classification cannot be distinguished from finite-size or truncation artifacts in DMRG.
  2. [Model comparison section] The comparison between the t-J and Hubbard models is used to argue that the pairing state is robust, but the manuscript does not quantify how the effective parameters (t, J, interchain couplings) map between the two models or demonstrate that the observed power-law behavior persists under modest variations of the interchain coupling strength.
minor comments (2)
  1. [Abstract] The abstract refers to 'power-law decays' without quoting the fitted exponent or the fitting window, which would help readers assess the quality of the power-law claim.
  2. [Figures] Figure captions and axis labels for the correlation plots should explicitly state the system length L and bond dimension chi used for each data set.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the careful reading of our manuscript and the positive evaluation of its potential significance. The comments identify areas where additional details will improve the presentation of our DMRG results. We respond to each major comment below and have revised the manuscript accordingly.

read point-by-point responses

  1. Referee: [Numerical results / DMRG analysis] The central claim (power-law pair correlations versus exponential spin decay upon hole doping) is stated in the abstract and elaborated in the numerical results, yet no quantitative pair exponent, spin correlation length, finite-size scaling data (e.g., L = 24 to 72), bond-dimension convergence (e.g., chi = 1000 to 4000), or truncation-error estimates are provided. Without these, the asymptotic classification cannot be distinguished from finite-size or truncation artifacts in DMRG.

    Authors: We agree that explicit quantitative measures and convergence diagnostics are necessary to firmly establish the asymptotic behavior. The original figures display correlation functions for several system sizes, but we did not report fitted exponents, correlation lengths, or detailed truncation and bond-dimension data. In the revised manuscript we have added a new subsection on numerical methods and convergence. It includes finite-size scaling for L up to 72, bond-dimension sweeps, truncation-error estimates, and extracted pair-correlation exponents together with spin correlation lengths. These additions confirm that the power-law pairing and exponential spin decay are not finite-size or truncation artifacts. revision: yes

  2. Referee: [Model comparison section] The comparison between the t-J and Hubbard models is used to argue that the pairing state is robust, but the manuscript does not quantify how the effective parameters (t, J, interchain couplings) map between the two models or demonstrate that the observed power-law behavior persists under modest variations of the interchain coupling strength.

    Authors: The referee correctly observes that the original text does not provide an explicit parameter mapping or tests of interchain-coupling variations. The t-J model is introduced as the strong-coupling limit of the Hubbard model, but this correspondence was not quantified. In the revised manuscript we have expanded the model-comparison section to state the parameter correspondence (J/t derived from the Hubbard U) and to present additional DMRG data for interchain couplings varied by approximately 20 percent around the nominal value. These calculations show that the power-law decay of pair correlations remains stable, supporting the robustness of the reported pairing state. revision: yes

Circularity Check

0 steps flagged

No significant circularity: central claims are direct DMRG outputs

full rationale

The paper's core results—power-law pair correlations and exponential spin decay upon hole doping away from the 1/3-filled spin-gapped state—are obtained as direct numerical outputs from DMRG simulations on the three-leg t-J ladder Hamiltonian. No parameters are fitted to subsets of the target data and then relabeled as predictions; no self-definitional loops exist in the correlation functions; and no load-bearing uniqueness theorems or ansatzes are imported via self-citation. The derivation chain consists of model definition, numerical method application, and measurement of correlation functions, all of which remain independent of the reported asymptotic behaviors. The comparison to the Hubbard model is likewise a separate numerical run. This is the standard, non-circular structure for a computational condensed-matter study.

Axiom & Free-Parameter Ledger

0 free parameters · 1 axioms · 0 invented entities

The central claim rests on the standard domain assumption that the t-J Hamiltonian with strong interchain coupling captures the essential physics of the target materials; no additional free parameters or invented entities are introduced in the abstract.

axioms (1)
  • domain assumption The t-J model is an appropriate effective low-energy description for the strongly correlated electrons in three-leg ladders near 1/3 filling.
    Invoked by the choice of Hamiltonian for the DMRG calculations.

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Reference graph

Works this paper leans on

83 extracted references · 83 canonical work pages · 1 internal anchor

  1. [1]

    H. Sun, M. Huo, X. Hu, J. Li, Z. Liu, Y. Han, L. Tang, Z. Mao, P. Yang, B. Wang, J. Cheng, D.-X. Yao, G.-M. Zhang, and M. Wang, Signatures of superconductivity near 80 K in a nickelate under high pressure, Nature621, 493 (2023)

    work page 2023

  2. [2]

    Hou, P.-T

    J. Hou, P.-T. Yang, Z.-Y. Liu, J.-Y. Li, P.-F. Shan, L. Ma, G. Wang, N.-N. Wang, H.-Z. Guo, J.-P. Sun, Y. Uwatoko, M. Wang, G.-M. Zhang, B.-S. Wang, and J.-G. Cheng, Emergence of high-temperature supercon- ducting phase in pressurized La 3Ni2O7 crystals, Chin. Phys. Lett.40, 117302 (2023)

    work page 2023

  3. [3]

    G. Wang, N. N. Wang, X. L. Shen, J. Hou, L. Ma, L. F. Shi, Z. A. Ren, Y. D. Gu, H. M. Ma, P. T. Yang, Z. Y. Liu, H. Z. Guo, J. P. Sun, G. M. Zhang, S. Calder, J.-Q. Yan, B. S. Wang, Y. Uwatoko, and J.-G. Cheng, Pressure-induced superconductivity in polycrys- talline La3Ni2O7−δ, Phys. Rev. X14, 011040 (2024)

    work page 2024

  4. [4]

    Zhang, D

    Y. Zhang, D. Su, Y. Huang, Z. Shan, H. Sun, M. Huo, K. Ye, J. Zhang, Z. Yang, Y. Xu, Y. Su, R. Li, M. Smid- man, M. Wang, L. Jiao, and H. Yuan, High-temperature superconductivity with zero resistance and strange-metal behaviour in La 3Ni2O7−δ, Nat. Phys.20, 1269 (2024)

    work page 2024

  5. [5]

    N. Wang, G. Wang, X. Shen, J. Hou, J. Luo, X. Ma, H. Yang, L. Shi, J. Dou, J. Feng, J. Yang, Y. Shi, Z. Ren, H. Ma, P. Yang, Z. Liu, Y. Liu, H. Zhang, X. Dong, Y. Wang, K. Jiang, J. Hu, S. Nagasaki, K. Kitagawa, S. Calder, J. Yan, J. Sun, B. Wang, R. Zhou, Y. Uwatoko, and J. Cheng, Bulk high-temperature superconductivity in pressurized tetragonal La 2PrNi...

    work page 2024

  6. [6]

    E. K. Ko, Y. Yu, Y. Liu, L. Bhatt, J. Li, V. Thampy, C.-T. Kuo, B. Y. Wang, Y. Lee, K. Lee, J.-S. Lee, B. H. Goodge, D. A. Muller, and H. Y. Hwang, Signa- tures of ambient pressure superconductivity in thin film La3Ni2O7, Nature638, 935 (2025)

    work page 2025

  7. [7]

    G. Zhou, W. Lv, H. Wang, Z. Nie, Y. Chen, Y. Li, H. Huang, W.-Q. Chen, Y.-J. Sun, Q.-K. Xue, and Z. Chen, Ambient-pressure superconductivity onset above 40 K in (La,Pr) 3Ni2O7 films, Nature640, 641 (2025)

    work page 2025

  8. [8]

    Z. Luo, X. Hu, M. Wang, W. W´ u, and D.-X. Yao, Bilayer two-orbital model of La 3Ni2O7 under pressure, Phys. Rev. Lett.131, 126001 (2023)

    work page 2023

  9. [9]

    Q.-G. Yang, D. Wang, and Q.-H. Wang, Possibles ±- wave superconductivity in La3Ni2O7, Phys. Rev. B108, L140505 (2023)

    work page 2023

  10. [10]

    Y. Shen, M. Qin, and G.-M. Zhang, Effective bi- layer model Hamiltonian and density-matrix renormal- ization group study for the high-T c superconductivity in La 3Ni2O7 under high pressure, Chin. Phys. Lett.40, 127401 (2023)

    work page 2023

  11. [11]

    Oh and Y.-H

    H. Oh and Y.-H. Zhang, Type-IIt−Jmodel and shared superexchange coupling from Hund’s rule in supercon- ducting La3Ni2O7, Phys. Rev. B108, 174511 (2023)

    work page 2023

  12. [12]

    Christiansson, F

    V. Christiansson, F. Petocchi, and P. Werner, Correlated electronic structure of La 3Ni2O7 under pressure, Phys. Rev. Lett.131, 206501 (2023)

    work page 2023

  13. [13]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, and E. Dagotto, Elec- tronic structure, dimer physics, orbital-selective behav- ior, and magnetic tendencies in the bilayer nickelate su- perconductor La 3Ni2O7 under pressure, Phys. Rev. B 108, L180510 (2023)

    work page 2023

  14. [14]

    Yang, G.-M

    Y.-f. Yang, G.-M. Zhang, and F.-C. Zhang, Interlayer valence bonds and two-component theory for high-Tc su- perconductivity of La 3Ni2O7 under pressure, Phys. Rev. B108, L201108 (2023)

    work page 2023

  15. [15]

    Lechermann, J

    F. Lechermann, J. Gondolf, S. B¨ otzel, and I. M. Eremin, Electronic correlations and superconducting instability in La 3Ni2O7 under high pressure, Phys. Rev. B108, L201121 (2023)

    work page 2023

  16. [16]

    Liu, J.-W

    Y.-B. Liu, J.-W. Mei, F. Ye, W.-Q. Chen, and F. Yang, s±-wave pairing and the destructive role of apical-oxygen deficiencies in La3Ni2O7 under pressure, Phys. Rev. Lett. 131, 236002 (2023)

    work page 2023

  17. [17]

    Z. Liao, L. Chen, G. Duan, Y. Wang, C. Liu, R. Yu, and Q. Si, Electron correlations and superconductivity in La 3Ni2O7 under pressure tuning, Phys. Rev. B108, 214522 (2023)

    work page 2023

  18. [18]

    Qu, D.-W

    X.-Z. Qu, D.-W. Qu, J. Chen, C. Wu, F. Yang, W. Li, and G. Su, Bilayert−J−J ⊥ model and magnetically medi- 7 ated pairing in the pressurized nickelate La3Ni2O7, Phys. Rev. Lett.132, 036502 (2024)

    work page 2024

  19. [19]

    Kaneko, H

    T. Kaneko, H. Sakakibara, M. Ochi, and K. Kuroki, Pair correlations in the two-orbital Hubbard ladder: Im- plications for superconductivity in the bilayer nickelate La3Ni2O7, Phys. Rev. B109, 045154 (2024)

    work page 2024

  20. [20]

    Cao and Y.-f

    Y. Cao and Y.-f. Yang, Flat bands promoted by Hund’s rule coupling in the candidate double-layer high- temperature superconductor La 3Ni2O7 under high pres- sure, Phys. Rev. B109, L081105 (2024)

    work page 2024

  21. [21]

    Sakakibara, N

    H. Sakakibara, N. Kitamine, M. Ochi, and K. Kuroki, Possible highT c superconductivity in La 3Ni2O7 under high pressure through manifestation of a nearly half-filled bilayer Hubbard model, Phys. Rev. Lett.132, 106002 (2024)

    work page 2024

  22. [22]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, T. A. Maier, and E. Dagotto, Structural phase transition,s ±-wave pair- ing, and magnetic stripe order in bilayered superconduc- tor La 3Ni2O7 under pressure, Nat. Commun.15, 2470 (2024)

    work page 2024

  23. [23]

    Heier, K

    G. Heier, K. Park, and S. Y. Savrasov, Competing dxy ands ± pairing symmetries in superconducting La3Ni2O7: LDA+FLEX calculations, Phys. Rev. B109, 104508 (2024)

    work page 2024

  24. [24]

    Jiang, J

    R. Jiang, J. Hou, Z. Fan, Z.-J. Lang, and W. Ku, Pressure driven fractionalization of ionic spins results in cuprate- like high-T c superconductivity in La 3Ni2O7, Phys. Rev. Lett.132, 126503 (2024)

    work page 2024

  25. [25]

    C. Lu, Z. Pan, F. Yang, and C. Wu, Interlayer-coupling- driven high-temperature superconductivity in La 3Ni2O7 under pressure, Phys. Rev. Lett.132, 146002 (2024)

    work page 2024

  26. [26]

    W. W´ u, Z. Luo, D.-X. Yao, and M. Wang, Superex- change and charge transfer in the nickelate superconduc- tor La3Ni2O7 under pressure, Sci. China Phys. Mech. As- tron.67, 117402 (2024)

    work page 2024

  27. [27]

    L. C. Rhodes and P. Wahl, Structural routes to stabilize superconducting La 3Ni2O7 at ambient pressure, Phys. Rev. Mater.8, 044801 (2024)

    work page 2024

  28. [28]

    J.-X. Wang, Z. Ouyang, R.-Q. He, and Z.-Y. Lu, Non- Fermi liquid and Hund correlation in La 4Ni3O10 under high pressure, Phys. Rev. B109, 165140 (2024)

    work page 2024

  29. [29]

    Geisler, J

    B. Geisler, J. J. Hamlin, G. R. Stewart, R. G. Hen- nig, and P. J. Hirschfeld, Structural transitions, octa- hedral rotations, and electronic properties of A 3Ni2O7 rare-earth nickelates under high pressure, npj Quantum Mater.9, 38 (2024)

    work page 2024

  30. [30]

    LaBollita, J

    H. LaBollita, J. Kapeghian, M. R. Norman, and A. S. Botana, Electronic structure and magnetic tendencies of trilayer La4Ni3O10 under pressure: Structural transition, molecular orbitals, and layer differentiation, Phys. Rev. B109, 195151 (2024)

    work page 2024

  31. [31]

    Kakoi, T

    M. Kakoi, T. Kaneko, H. Sakakibara, M. Ochi, and K. Kuroki, Pair correlations of the hybridized orbitals in a ladder model for the bilayer nickelate La 3Ni2O7, Phys. Rev. B109, L201124 (2024)

    work page 2024

  32. [32]

    Z. Luo, B. Lv, M. Wang, W. W´ u, and D.-X. Yao, High- Tc superconductivity in La 3Ni2O7 based on the bilayer two-orbitalt–Jmodel, npj Quantum Mater.9, 61 (2024)

    work page 2024

  33. [33]

    Yang, K.-Y

    Q.-G. Yang, K.-Y. Jiang, D. Wang, H.-Y. Lu, and Q.-H. Wang, Effective model ands ±-wave superconductivity in trilayer nickelate La4Ni3O10, Phys. Rev. B109, L220506 (2024)

    work page 2024

  34. [34]

    C.-Q. Chen, Z. Luo, M. Wang, W. W´ u, and D.-X. Yao, Trilayer multiorbital models of La4Ni3O10, Phys. Rev. B 110, 014503 (2024)

    work page 2024

  35. [35]

    J. Chen, F. Yang, and W. Li, Orbital-selective supercon- ductivity in the pressurized bilayer nickelate La 3Ni2O7: An infinite projected entangled-pair state study, Phys. Rev. B110, L041111 (2024)

    work page 2024

  36. [36]

    C. Lu, Z. Pan, F. Yang, and C. Wu, Interplay of two Eg orbitals in superconducting La3Ni2O7 under pressure, Phys. Rev. B110, 094509 (2024)

    work page 2024

  37. [37]

    H. Yang, H. Oh, and Y.-H. Zhang, Strong pairing from a small Fermi surface beyond weak coupling: Application to La3Ni2O7, Phys. Rev. B110, 104517 (2024)

    work page 2024

  38. [38]

    S. Ryee, N. Witt, and T. O. Wehling, Quenched pair breaking by interlayer correlations as a key to super- conductivity in La 3Ni2O7, Phys. Rev. Lett.133, 096002 (2024)

    work page 2024

  39. [39]

    Zhang, H.-K

    J.-X. Zhang, H.-K. Zhang, Y.-Z. You, and Z.-Y. Weng, Strong pairing originated from an emergentZ 2 Berry phase in La3Ni2O7, Phys. Rev. Lett.133, 126501 (2024)

    work page 2024

  40. [40]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, T. A. Maier, and E. Dagotto, Prediction ofs ±-wave superconductivity enhanced by electronic doping in trilayer nickelates La4Ni3O10 under pressure, Phys. Rev. Lett.133, 136001 (2024)

    work page 2024

  41. [41]

    Schl¨ omer, U

    H. Schl¨ omer, U. Schollw¨ ock, F. Grusdt, and A. Bohrdt, Superconductivity in the pressurized nickelate La 3Ni2O7 in the vicinity of a BEC–BCS crossover, Commun. Phys. 7, 366 (2024)

    work page 2024

  42. [42]

    H. Oh, B. Zhou, and Y.-H. Zhang, Type-IIt−Jmodel in charge transfer regime in bilayer La 3Ni2O7 and trilayer La4Ni3O10, Phys. Rev. B111, L020504 (2025)

    work page 2025

  43. [43]

    Zheng and W

    Y.-Y. Zheng and W. W´ u,s ±-wave superconductivity in the bilayer two-orbital Hubbard model, Phys. Rev. B 111, 035108 (2025)

    work page 2025

  44. [44]

    J.-Y. You, Z. Zhu, M. Del Ben, W. Chen, and Z. Li, Unlikelihood of a phonon mechanism for the high- temperature superconductivity in La 3Ni2O7, npj Com- put. Mater.11, 3 (2025)

    work page 2025

  45. [45]

    M. Ochi, H. Sakakibara, H. Usui, and K. Kuroki, Theo- retical study of the crystal structure of the bilayer nickel oxychloride Sr3Ni2O5Cl2 and analysis of possible uncon- ventional superconductivity, Phys. Rev. B111, 064511 (2025)

    work page 2025

  46. [46]

    Jiang, Y.-H

    K.-Y. Jiang, Y.-H. Cao, Q.-G. Yang, H.-Y. Lu, and Q.-H. Wang, Theory of pressure dependence of superconductiv- ity in bilayer nickelate La 3Ni2O7, Phys. Rev. Lett.134, 076001 (2025)

    work page 2025

  47. [47]

    Kaneko, M

    T. Kaneko, M. Kakoi, and K. Kuroki,t-Jmodel for strongly correlated two-orbital systems: Application to bilayer nickelate superconductors, Phys. Rev. B112, 075143 (2025)

    work page 2025

  48. [48]

    Kamiyama, T

    S. Kamiyama, T. Kaneko, K. Kuroki, and M. Ochi, Opti- cal control of the crystal structure in the bilayer nickelate superconductor La3Ni2O7 via nonlinear phononics, Phys. Rev. B112, 094115 (2025)

    work page 2025

  49. [49]

    Qu, D.-W

    X.-Z. Qu, D.-W. Qu, X.-W. Yi, W. Li, and G. Su, Hund’s rule, interorbital hybridization, and high-T c supercon- ductivity in the bilayer nickelate La 3Ni2O7, Phys. Rev. B112, L161101 (2025)

    work page 2025

  50. [50]

    Theoretical study on ambient pressure superconductivity in La$_3$Ni$_2$O$_7$ thin films : structural analysis, model construction, and robustness of $s\pm$-wave pairing

    K. Ushio, S. Kamiyama, Y. Hoshi, R. Mizuno, M. Ochi, K. Kuroki, and H. Sakakibara, Theoretical study on am- bient pressure superconductivity in La 3Ni2O7 thin films: structural analysis, model construction, and robustness ofs±-wave pairing, arXiv:2506.20497. 8

    work page internal anchor Pith review Pith/arXiv arXiv

  51. [51]

    Kamiyama, R

    S. Kamiyama, R. Kohno, Y. Hoshi, K. Ushio, D. Nakaoka, H. Sakakibara, and K. Kuroki, Theoret- ical proposal of superconductivity in hole-doped re- duced bilayer nickelate La 3Ni2O6: a manifestation of orbital-space bilayer model with incipient bands, arXiv:2603.11771

    work page arXiv

  52. [52]

    Watanabe, H

    H. Watanabe, H. Sakakibara, and K. Kuroki, Hi- erarchical structure of primary and hybridization- induced superconducting correlations in bilayer nicke- lates, arXiv:2603.13604

    work page arXiv

  53. [53]

    Sakakibara, M

    H. Sakakibara, M. Ochi, H. Nagata, Y. Ueki, H. Saku- rai, R. Matsumoto, K. Terashima, K. Hirose, H. Ohta, M. Kato, Y. Takano, and K. Kuroki, Theoretical analy- sis on the possibility of superconductivity in the trilayer Ruddlesden-Popper nickelate La 4Ni3O10 under pressure and its experimental examination: Comparison with La3Ni2O7, Phys. Rev. B109, 144511 (2024)

    work page 2024

  54. [54]

    Li, Y.-J

    Q. Li, Y.-J. Zhang, Z.-N. Xiang, Y. Zhang, X. Zhu, and H.-H. Wen, Signature of superconductivity in pressurized La4Ni3O10, Chin. Phys. Lett.41, 017401 (2024)

    work page 2024

  55. [55]

    Li, C.-Q

    J. Li, C.-Q. Chen, C. Huang, Y. Han, M. Huo, X. Huang, P. Ma, Z. Qiu, J. Chen, X. Hu, L. Chen, T. Xie, B. Shen, H. Sun, D.-X. Yao, and M. Wang, Structural transition, electric transport, and electronic structures in the com- pressed trilayer nickelate La 4Ni3O10, Sci. China Phys. Mech. Astron.67, 117403 (2024)

    work page 2024

  56. [56]

    Y. Zhu, D. Peng, E. Zhang, B. Pan, X. Chen, L. Chen, H. Ren, F. Liu, Y. Hao, N. Li, Z. Xing, F. Lan, J. Han, J. Wang, D. Jia, H. Wo, Y. Gu, Y. Gu, L. Ji, W. Wang, H. Gou, Y. Shen, T. Ying, X. Chen, W. Yang, H. Cao, C. Zheng, Q. Zeng, J.-g. Guo, and J. Zhao, Superconduc- tivity in pressurized trilayer La4Ni3O10−δ single crystals, Nature631, 531 (2024)

    work page 2024

  57. [57]

    Kakoi, T

    M. Kakoi, T. Oi, Y. Ohshita, M. Yashima, K. Kuroki, T. Kato, H. Takahashi, S. Ishiwata, Y. Adachi, N. Hatada, T. Uda, and H. Mukuda, Multiband metal- lic ground state in multilayered nickelates La3Ni2O7 and La4Ni3O10 probed by 139La-NMR at ambient pressure, J. Phys. Soc. Jpn.93, 053702 (2024)

    work page 2024

  58. [58]

    Nagata, H

    H. Nagata, H. Sakurai, Y. Ueki, K. Yamane, R. Mat- sumoto, K. Terashima, K. Hirose, H. Ohta, M. Kato, and Y. Takano, Pressure-induced superconductivity in La4Ni3O10+δ (δ= 0.04 and−0.01), J. Phys. Soc. Jpn. 93, 095003 (2024)

    work page 2024

  59. [59]

    Zhang, C

    M. Zhang, C. Pei, D. Peng, X. Du, W. Hu, Y. Cao, Q. Wang, J. Wu, Y. Li, H. Liu, C. Wen, J. Song, Y. Zhao, C. Li, W. Cao, S. Zhu, Q. Zhang, N. Yu, P. Cheng, L. Zhang, Z. Li, J. Zhao, Y. Chen, C. Jin, H. Guo, C. Wu, F. Yang, Q. Zeng, S. Yan, L. Yang, and Y. Qi, Supercon- ductivity in trilayer nickelate La4Ni3O10 under pressure, Phys. Rev. X15, 021005 (2025)

    work page 2025

  60. [60]

    Zhang, D

    E. Zhang, D. Peng, Y. Zhu, L. Chen, B. Cui, X. Wang, W. Wang, Q. Zeng, and J. Zhao, Bulk superconductivity in pressurized trilayer nickelate Pr 4Ni3O10 single crys- tals, Phys. Rev. X15, 021008 (2025)

    work page 2025

  61. [61]

    Arrigoni, Spin and charge excitations in a three-legs fermionic ladder: a renormalization-group study, Phys

    E. Arrigoni, Spin and charge excitations in a three-legs fermionic ladder: a renormalization-group study, Phys. Lett. A215, 91 (1996)

    work page 1996

  62. [62]

    Arrigoni, Phase diagram of three fermionic chains: A renormalization-group study, Phys

    E. Arrigoni, Phase diagram of three fermionic chains: A renormalization-group study, Phys. Status Solidi B195, 425 (1996)

    work page 1996

  63. [63]

    Kimura, K

    T. Kimura, K. Kuroki, and H. Aoki, Correlation func- tions in the three-chain Hubbard ladder, Phys. Rev. B 54, R9608 (1996)

    work page 1996

  64. [64]

    H.-H. Lin, L. Balents, and M. P. A. Fisher,n-chain Hub- bard model in weak coupling, Phys. Rev. B56, 6569 (1997)

    work page 1997

  65. [65]

    T. M. Rice, S. Haas, M. Sigrist, and F.-C. Zhang, Lightly dopedt−Jthree-leg ladders: An analog for the under- doped cuprates, Phys. Rev. B56, 14655 (1997)

    work page 1997

  66. [66]

    S. R. White and D. J. Scalapino, Ground-state properties of the doped three-legt-Jladder, Phys. Rev. B57, 3031 (1998)

    work page 1998

  67. [67]

    Kimura, K

    T. Kimura, K. Kuroki, and H. Aoki, Pairing correlation in the three-leg Hubbard ladder – renormalization group and quantum monte carlo studies, J. Phys. Soc. Jpn.67, 1377 (1998)

    work page 1998

  68. [68]

    M. Y. Kagan, S. Haas, and T. M. Rice, Phase diagram of three-leg ladders at strong coupling along the rungs, Physica C317-318, 185 (1999)

    work page 1999

  69. [69]

    Dagotto, J

    E. Dagotto, J. Riera, and D. Scalapino, Superconductiv- ity in ladders and coupled planes, Phys. Rev. B45, 5744 (1992)

    work page 1992

  70. [70]

    R. M. Noack, S. R. White, and D. J. Scalapino, Corre- lations in a two-chain Hubbard model, Phys. Rev. Lett. 73, 882 (1994)

    work page 1994

  71. [71]

    Dolfi, B

    M. Dolfi, B. Bauer, S. Keller, and M. Troyer, Pair cor- relations in doped Hubbard ladders, Phys. Rev. B92, 195139 (2015)

    work page 2015

  72. [72]

    S. R. White, Density matrix formulation for quantum renormalization groups, Phys. Rev. Lett.69, 2863 (1992)

    work page 1992

  73. [73]

    S. R. White, Density-matrix algorithms for quantum renormalization groups, Phys. Rev. B48, 10345 (1993)

    work page 1993

  74. [74]

    Schollw¨ ock, The density-matrix renormalization group in the age of matrix product states, Ann

    U. Schollw¨ ock, The density-matrix renormalization group in the age of matrix product states, Ann. Phys.326, 96 (2011)

    work page 2011

  75. [75]

    Lu, D.-W

    X. Lu, D.-W. Qu, Y. Qi, W. Li, and S.-S. Gong, Ground- state phase diagram of the extended two-legt-Jladder, Phys. Rev. B107, 125114 (2023)

    work page 2023

  76. [76]

    Shen, G.-M

    Y. Shen, G.-M. Zhang, and M. Qin, Reexamining doped two-legged Hubbard ladders, Phys. Rev. B108, 165113 (2023)

    work page 2023

  77. [77]

    Kaneko, S

    T. Kaneko, S. Ejima, K. Sugimoto, and K. Kuroki, Ground-state properties of thet–Jmodel for the CuO double-chain structure, J. Phys. Soc. Jpn.93, 084703 (2024)

    work page 2024

  78. [78]

    Noack, S

    R. Noack, S. White, and D. Scalapino, The ground state of the two-leg Hubbard ladder a density-matrix renor- malization group study, Physica C270, 281 (1996)

    work page 1996

  79. [79]

    Kato and K

    D. Kato and K. Kuroki, Many-variable variational monte carlo study of superconductivity in two-band Hubbard models with an incipient band, Phys. Rev. Res.2, 023156 (2020)

    work page 2020

  80. [80]

    Sheikhan and C

    A. Sheikhan and C. Kollath, Dynamically enhanced un- conventional superconducting correlations in a Hubbard ladder, Phys. Rev. B102, 035163 (2020)

    work page 2020

Showing first 80 references.