pith. sign in

arxiv: 2606.17273 · v1 · pith:T4BWXUCInew · submitted 2026-06-15 · ❄️ cond-mat.supr-con · cond-mat.str-el

Tunable Superconductivity in 1313-La₃Ni₂O₇: Suppressed under Compression and Possible s^(pm) Pairing under Tension

Yang Zhang , Ling-Fang Lin , Adriana Moreo , Thomas A. Maier , Elbio Dagotto This is my paper

Pith reviewed 2026-06-27 02:08 UTC · model grok-4.3

classification ❄️ cond-mat.supr-con cond-mat.str-el
keywords La3Ni2O7nickelate thin filmsstrain engineerings± pairingtrilayer subsystemFermi surface pocketsrandom phase approximationsuperconductivity
0
0 comments X

The pith

Tensile strain induces a robust s±-wave pairing state in the trilayer block of 1313-La3Ni2O7 while compression suppresses superconductivity.

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

The paper examines how compressive and tensile strain reshape the electronic structure and pairing tendencies in 1313-La3Ni2O7 thin films. Self-doping between single-layer and trilayer blocks occurs in both cases but is stronger under tension. Calculations within the random-phase approximation find no superconductivity under compression on the LSAO substrate even with added holes. Under tension, however, a stable s± state appears in the trilayer subsystem, with gap sign changes between the small electron-like σ pocket at Γ and the small hole-like γ pocket at M, linked by a wave vector near (π,π). The work concludes that an optimally sized γ pocket is required for pairing and that strain can be used to engineer superconductivity at ambient pressure.

Core claim

Within the random-phase approximation, tensile strain applied to 1313-La3Ni2O7 produces a robust s±-wave superconducting state in the trilayer subsystem. The state features sign-changing gaps on the small electron-like σ pocket at the Γ point and the small hole-like γ pocket at the M point, which are connected by a wave vector close to (π,π). Compressive strain suppresses superconductivity, and an oversized γ pocket prevents pairing formation.

What carries the argument

Random-phase approximation applied to the strained multi-orbital Hubbard model of the trilayer subsystem, which identifies the inter-pocket scattering vector near (π,π) as the driver of s± pairing symmetry.

If this is right

  • Superconductivity remains unlikely under compression on LSAO even with further hole doping.
  • Tensile strain produces self-doping that favors the required pocket sizes for pairing.
  • An optimally sized γ pocket is necessary; an oversized one suppresses the s± state.
  • Strain-dependent electronic reconstruction offers a route to ambient-pressure superconductivity in this nickelate.
  • The s± symmetry is tied to the specific (π,π) connection between σ and γ pockets.

Where Pith is reading between the lines

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

  • Similar strain tuning might stabilize s± pairing in related trilayer nickelates or other multi-orbital systems with comparable Fermi-surface topologies.
  • If the predicted pocket sizes are confirmed by ARPES, the same strain protocol could be tested in bulk crystals under uniaxial tension.
  • The requirement for an optimal γ pocket size suggests a general design rule for nickelate superconductors that could be checked by varying film thickness or substrate mismatch.

Load-bearing premise

The random-phase approximation correctly describes the effective pairing interaction and resulting symmetry in the strained multi-orbital system.

What would settle it

Direct measurement of an absent or differently symmetric gap under tensile strain, or an oversized γ pocket without superconductivity, would disprove the predicted s± state.

Figures

Figures reproduced from arXiv: 2606.17273 by Adriana Moreo, Elbio Dagotto, Ling-Fang Lin, Thomas A. Maier, Yang Zhang.

Figure 1
Figure 1. Figure 1: FIG. 1. (a) Schematic crystal structure of the 1313-LNO film [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 3
Figure 3. Figure 3: FIG. 3. (a-b) Tight-binding band structure and Fermi surface [PITH_FULL_IMAGE:figures/full_fig_p003_3.png] view at source ↗
Figure 2
Figure 2. Figure 2: FIG. 2. (a-b) The RPA-calculated leading superconducting [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗
Figure 4
Figure 4. Figure 4: FIG. 4. (a-b) The RPA-calculated superconducting singlet [PITH_FULL_IMAGE:figures/full_fig_p004_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: FIG. 5. (a) The RPA calculated pairing strength [PITH_FULL_IMAGE:figures/full_fig_p005_5.png] view at source ↗
read the original abstract

Motivated by recent progress in the 1313-La$_3$Ni$_2$O$_7$ nickelate thin films (Nie et al., Nature {\bf 652}, 628 (2026)), we systematically investigate the effects of both compressive and tensile strain in this system. Self-doping effects between the single-layer (SL) and trilayer (TL) blocks are observed in our studies in both cases, but are most pronounced under tensile strain. We find that superconductivity is unlikely to emerge in the 1313 film on the LSAO substrate even with further hole doping. Remarkably, within the random-phase approximation, under {\it tensile} strain, a robust $s^{\pm}$-wave pairing state emerges in the TL subsystem with sign changes between the small electron-like $\sigma$ pocket at the $\Gamma$ point and the small hole-like $\gamma$ pocket at the M point. These pockets are connected by a wave vector close to $(\pi,\pi)$. Our calculations also suggest that superconductivity in 1313-LNO requires an optimally sized $\gamma$ pocket, because an oversized $\gamma$ pocket suppresses pairing formation. Overall, our results predict strain-dependent electronic reconstruction in 1313-La$_3$Ni$_2$O$_7$ and provide guiding principles for engineering superconductivity under ambient pressure conditions.

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 / 1 minor

Summary. The manuscript investigates strain-dependent electronic structure and superconductivity in 1313-La3Ni2O7 thin films via self-consistent band calculations and random-phase approximation (RPA) for the pairing interaction. It reports pronounced self-doping between single-layer and trilayer blocks (strongest under tension), suppression of superconductivity under compression (including on LSAO even with hole doping), and emergence under tensile strain of a robust s±-wave state in the trilayer subsystem featuring sign reversal between the small electron-like σ pocket at Γ and hole-like γ pocket at M (connected by wavevector near (π,π)). The work concludes that an optimally sized γ pocket is required for pairing and offers guidance for ambient-pressure superconductivity engineering.

Significance. If the RPA results are reliable, the paper supplies concrete, falsifiable predictions for strain-tuned Fermi-surface reconstruction and pairing symmetry in nickelate films, emphasizing the role of pocket size and inter-pocket scattering at (π,π). This could directly inform experimental efforts to stabilize superconductivity without extreme pressure.

major comments (2)
  1. [Abstract and RPA results section] Abstract and RPA results section: the central claim of a 'robust' s± pairing state under tensile strain is obtained from the leading eigenvalue of the RPA gap equation on the strain-dependent multi-orbital bands. No quantitative support is supplied (eigenvalue magnitude, comparison to sub-leading channels, or error estimates), and no convergence data with respect to k-mesh density or Matsubara cutoff are reported; these omissions are load-bearing because they prevent independent assessment of whether the reported sign-changing s± solution is stable or an artifact of the approximation.
  2. [Abstract and RPA results section] The assumption that RPA correctly ranks pairing symmetries in this correlated multi-orbital nickelate (abstract): given that local correlations are strong, RPA bubble summation can misidentify the dominant channel. A concrete test would be to recompute the leading instability with a method that includes higher-order diagrams (e.g., FLEX or DMFT+vertex corrections) on the same strained bands and check whether the s± eigenvalue remains dominant.
minor comments (1)
  1. [Abstract] The symbols σ and γ for the pockets are used without an explicit definition or reference to a figure showing the Fermi surface; this should be added for clarity.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for their careful reading of our manuscript and for the constructive comments. We respond to each major comment below.

read point-by-point responses

  1. Referee: [Abstract and RPA results section] Abstract and RPA results section: the central claim of a 'robust' s± pairing state under tensile strain is obtained from the leading eigenvalue of the RPA gap equation on the strain-dependent multi-orbital bands. No quantitative support is supplied (eigenvalue magnitude, comparison to sub-leading channels, or error estimates), and no convergence data with respect to k-mesh density or Matsubara cutoff are reported; these omissions are load-bearing because they prevent independent assessment of whether the reported sign-changing s± solution is stable or an artifact of the approximation.

    Authors: We agree that the manuscript would benefit from explicit quantitative support for the RPA results. In the revised version we will report the magnitude of the leading eigenvalue, its separation from sub-leading channels, and convergence tests with respect to k-mesh density and Matsubara cutoff. These additions will allow independent assessment of the stability of the s± solution. revision: yes

  2. Referee: [Abstract and RPA results section] The assumption that RPA correctly ranks pairing symmetries in this correlated multi-orbital nickelate (abstract): given that local correlations are strong, RPA bubble summation can misidentify the dominant channel. A concrete test would be to recompute the leading instability with a method that includes higher-order diagrams (e.g., FLEX or DMFT+vertex corrections) on the same strained bands and check whether the s± eigenvalue remains dominant.

    Authors: RPA is a standard and widely applied method for identifying pairing instabilities driven by inter-pocket scattering in multi-orbital models of nickelates and related materials. While we acknowledge its limitations in strongly correlated regimes, performing FLEX or DMFT+vertex calculations on the strained bands lies beyond the scope of the present study. We will add a brief discussion of the approximate nature of RPA and note that the reported s± state is consistent with the expected (π,π) scattering mechanism. revision: no

Circularity Check

0 steps flagged

No circularity: RPA pairing symmetry is forward computation from band structure

full rationale

The paper obtains the s± pairing state by applying the random-phase approximation to the strain-dependent multi-orbital band structure of the TL subsystem. This is a standard forward evaluation of the pairing vertex from the input Hamiltonian; the symmetry and sign-change structure between the Γ σ and M γ pockets emerge as computed outputs rather than quantities defined in terms of themselves or obtained by fitting a parameter to the target result. No self-citation is invoked as the load-bearing justification for the pairing channel, and the derivation contains no self-definitional, fitted-input-renamed-as-prediction, or ansatz-smuggled steps. The result is therefore self-contained against external benchmarks.

Axiom & Free-Parameter Ledger

0 free parameters · 1 axioms · 0 invented entities

The central claim rests on the validity of the random-phase approximation for the pairing vertex and on the accuracy of the underlying band-structure calculation under strain; no additional free parameters or invented entities are stated in the abstract.

axioms (1)
  • domain assumption The random-phase approximation provides a reliable description of the superconducting pairing interaction in this multi-orbital nickelate system.
    The abstract explicitly states that the s± pairing result is obtained within the RPA.

pith-pipeline@v0.9.1-grok · 5803 in / 1302 out tokens · 45420 ms · 2026-06-27T02:08:29.960680+00:00 · methodology

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Reference graph

Works this paper leans on

101 extracted references · 7 linked inside Pith

  1. [1]

    H. Sun, M. Huo, X. Hu, J. Li, 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 Nature621493 (2023)

    2023

  2. [2]

    Zhang, D

    Y. Zhang, D. Su, Y. Huang, H. Sun, M. Huo, Z. Shan, K. Ye, Z. Yang, R. Li, M. Smidman, M. Wang, L. Jiao, and H. Yuan, High-temperature superconductivity with zero resistance and strange-metal behaviour in La 3Ni2O7−δ Nat. Phys.201269 (2024)

    2024

  3. [3]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, and E. Dagotto, Electronic structure, dimer physics, orbital-selective behavior, and magnetic tendencies in the bilayer nickelate superconductor La 3Ni2O7 under pressure Phys. Rev. B108, L180510 (2023)

    2023

  4. [4]

    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 Polycrystalline La3Ni2O7−δ Phys. Rev. X14011040 (2024)

    2024

  5. [5]

    Z. Dong, M. Huo, J. Li, J. Li, P. Li, H. Sun, Y. Lu, M. Wang, Y. Wang, and Z. Chen, Visualization of oxygen vacancies and self-doped ligand holes in La 3Ni2O7−δ Nature630847 (2024)

    2024

  6. [6]

    J. Yang, H. Sun, X. Hu, Y. Xie, T. Miao, H. Luo, H. Chen, B. Liang, W. Zhu, G. Qu, C.-Q. Chen, M. Huo, Y. Huang, S. Zhang, F. Zhang, F. Yang, Z. Wang, Q. Peng, H. Mao, G. Liu, Z. Xu, T. Qian, D.-X. Yao, M. Wang, L. Zhao, and X. J. Zhou, Orbital-dependent electron correlation in double-layer nickelate La 3Ni2O7 Nat. Commun.154373 (2024)

    2024

  7. [7]

    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...

    2024

  8. [8]

    L. Wang, Y. Li, S.-Y. Xie, F. Liu, H. Sun, C. Huang, Y. Gao, T. Nakagawa, B. Fu, B. Dong, Z. Cao, R. Yu, S. I. Kawaguchi, H. Kadobayashi, M. Wang, C. Jin, H.-k Mao, and H. Liu, Structure Responsible for the Superconducting State in La 3Ni2O7 at High-Pressure and Low-Temperature Conditions J. Am. Chem. Soc. 1467506 (2024)

    2024

  9. [9]

    Y. Zhu, E. Zhang, B. Pan, X. Chen, D. Peng, L. Chen, H. Ren, F. Liu, N. Li, Z. Xing, 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, C. Zheng, Q. Zeng, J.-G. Guo, and J. Zhao, Superconductivity in pressurized trilayer La4Ni3O10−δ single crystals Nature 631531 (2024)

    2024

  10. [10]

    Li, Y.-J

    Q. Li, Y.-J. Zhang, Z.-N. Xiang, Y. Zhang, X. Zhu and H.-H. Wen, Signature of Superconductivity in Pressurized La 4Ni3O10 Chinese Phys. Lett.41, 017401 (2024)

    2024

  11. [11]

    Sakakibara, M

    H. Sakakibara, M. Ochi, H. Nagata, Y. Ueki, H. Sakurai, R. Matsumoto, K. Terashima, K. Hirose, H. Ohta, M. Kato, Y. Takano, and K. Kuroki, Theoretical analysis on the possibility of superconductivity in the trilayer Ruddlesden-Popper nickelate La4Ni3O10 under pressure and its experimental examination: Comparison with La3Ni2O7 Phys. Rev. B109144511 (2024)

    2024

  12. [12]

    Z. Liu, M. Huo, J. Li, Q. Li, Y. Liu, Y. Dai, X. Zhou, J. Hao, Y. Lu, M. Wang, and W.-H. Wen, Electronic correlations and partial gap in the bilayer nickelate La3Ni2O7 Nat. Commun.157570 (2024)

    2024

  13. [13]

    T. Xie, M. Huo, X. Ni, F. Shen, X. Huang, H. Sun, H. C. Walker, D. Adroja, D. Yu, B. Shen, L. He, K. Cao, and M. Wang, Strong interlayer magnetic exchange coupling in La 3Ni2O7−δ revealed by inelastic neutron scattering Science Bulletin693221 (2024)

    2024

  14. [14]

    X. Chen, J. Choi, Z. Jiang, J. Mei, K. Jiang, J. Li, S. Agrestini, M. Garcia-Fernandez, X. Huang, H. Sun, D. Shen, M. Wang, J. Hu, Y. Lu, K.-J. Zhou, and D. Feng, Electronic and magnetic excitations in La 3Ni2O7 Nat. Commun.15, 9597 (2024)

    2024

  15. [15]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, T. A. Maier, and E. Dagotto, Trends in electronic structures ands ±-wave pairing for the rare-earth series in bilayer nickelate superconductorsR 3Ni2O7 Phys. Rev. B108, 165141 (2023)

    2023

  16. [16]

    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 BL Hubbard Model Phys. Rev. Lett.132 106002 (2024)

    2024

  17. [17]

    H. Oh, B. Zhou, and Y.-H. Zhang, Type-IIt−Jmodel in charge transfer regime in bilayer La 3Ni2O7 and trilayer La4Ni3O10 Phys. Rev. B110, 195135 (2024)

    2024

  18. [18]

    S. Ryee, N. Witt, and T. O. Wehling, Quenched Pair Breaking by Interlayer Correlations as a Key to Superconductivity in La 3Ni2O7 Phys. Rev. Lett.133, 096002 (2024)

    2024

  19. [19]

    J. Zhan, Y. Gu, X. Wu, and J. Hu, Cooperation between Electron-Phonon Coupling and Electronic Interaction in bilayer Nickelates La 3Ni2O7 Phys. Rev. Lett.134, 136002 (2025)

    2025

  20. [20]

    L. B. Braz, G. B. Martins, and L. G. G. V. Dias da Silva, Interlayer interactions in La 3Ni2O7 under pressure: froms ± tod xy-wave superconductivityPhys. Rev. Research7, 033023 (2025)

    2025

  21. [21]

    Qu, D.-W

    X.-Z. Qu, D.-W. Qu, J. Chen, C. Wu, F. Yang, W. Li, and G. Su, BLt−J−J ⊥ Model and Magnetically 7 Mediated Pairing in the Pressurized Nickelate La3Ni2O7 Phys. Rev. Lett.132, 036502 (2024)

    2024

  22. [22]

    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)

    2024

  23. [23]

    H. Liu, C. Xia, S. Zhou, H. Chen, Sensitive dependence of pairing symmetry on Ni-e g crystal field splitting in the nickelate superconductor La 3Ni2O7 Nat. Commun. 16, 1054 (2025)

    2025

  24. [24]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, T. A. Maier, and E. Dagotto, Magnetic Correlations and Pairing Tendencies of the Hybrid Stacking Nickelate Superlattice La7Ni5O17 (La3Ni2O7/La3Ni4O10)under Pressure Phys. Rev. B112, 024508 (2025)

    2025

  25. [25]

    M. Shi, D. Peng, K. Fan, Z. Xing, S. Yang, Y. Wang, H. Li, R. Wu, M. Du, B. Ge, Z. Zeng, Q. Zeng, J. Ying, T. Wu, X. Chen, Superconductivity of the hybrid Ruddlesden-Popper La 5Ni3O11 single crystals Nat. Phys.24, 1780 (2025)

    2025

  26. [26]

    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)

    2023

  27. [27]

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

    2023

  28. [28]

    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)

    2023

  29. [29]

    Huang, Z

    J. Huang, Z. D. Wang, and T. Zhou, Impurity and vortex states in the bilayer high-temperature superconductor La 3Ni2O7 Phys. Rev. B108, 174501 (2023)

    2023

  30. [30]

    Qin, and Y.-F

    Q. Qin, and Y.-F. Yang, High-T c superconductivity by mobilizing local spin singlets and possible route to higherT c in pressurized La 3Ni2O7 Phys. Rev. B108, L140504 (2023)

    2023

  31. [31]

    L.-F. Lin, Y. Zhang, N. Kaushal, G. Alvarez, T. A. Maier, A. Moreo, and E. Dagotto, Magnetic phase diagram of a two-orbital model for bilayer nickelates with varying doping Phys. Rev. B110, 195135 (2024)

    2024

  32. [32]

    T. A. Maier, P. Doak, L.-F. Lin, Y. Zhang, A. Moreo, and E. Dagotto, Interlayer Pairing in bilayer Nickelates npj Quantum Mater.11, 19 (2026)

    2026

  33. [33]

    F. Li, D. Peng, J. Dou, N. Guo, L. Ma, C. Liu, L. Wang, Y. Zhang, J. Luo, J. Yang, J. Zhang, W. Cai, J. Cheng, Q. Zheng, R. Zhou, Q. Zeng, X. Tao, and J. Zhang, Ambient pressure growth of bilayer nickelate single crystals with superconductivity over 90 K under high pressure Nature649, 871 (2026)

    2026

  34. [34]

    Z. Dong, G. Wang, N. Wang, W.-H. Dong, L. Gu, Y. Xu, J. Cheng, Z. Chen, Y. Wang, Interstitial oxygen order and its competition with superconductivity in La2PrNi2O7+δ Nat. Mater.24, 1927 (2025)

    1927

  35. [35]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, S. Okamoto, T. A. Maier, and E. Dagotto, General trends of superconducting pairing and magnetic correlations in the Ruddlesden-Popper nickelatem-layered superconductors La m+1NimO3m+1 Phys. Rev. B 112, 094517 (2025)

    2025

  36. [36]

    Wang, H.-H

    M. Wang, H.-H. Wen, T. Wu, D.-X. Yao, and T. Xiang, Normal and Superconducting Properties of La 3Ni2O7 Chin. Phys. Lett.41, 077402 (2025)

    2025

  37. [37]

    Y. Wang, K. Jiang, J. Ying, T. Wu, J. Cheng, J. Hu, and X. Chen, Recent progress in nickelate superconductors Natl. Sci. Rev.12, nwaf373 (2025)

    2025

  38. [38]

    Puphal, T

    P. Puphal, T. Sch¨ afer, B. Keimer, and M. Hepting, Superconductivity in infinite-layer and Ruddlesdenˆ a€“Popper nickelates Nat. Rev. Phys.8, 70 (2025)

    2025

  39. [39]

    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, Signatures of ambient pressure superconductivity in thin film La3Ni2O7 Nature638, 935 (2025)

    2025

  40. [40]

    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)

    2025

  41. [41]

    Bhatt, E

    L. Bhatt, E. A. Morales, A. Y. Jiang, E. K. Ko, N. Schnitzer, G. A. Pan, D. F. Segedin, Y. Liu, Y. Yu, Z.-Y. Zhao, E. A. Morales, c. M. Brooks, A. S. Botana, H. Y. Hwang, J. A. Mundy, D. A. Muller, and B. H. Goodge, Structural modifications in strain-engineered bilayer nickelate thin films Nature65376 (2026)

    2026

  42. [42]

    H. Wang, H. Huang, G. Zhou, W. Lv, C. Yue, L. Xu, X. Wu, Z. Nie, Y. Chen, Y.-J. Sun, W. Chen, H. Yuan, Z. Chen, Q.-K. Xue, Electronic Structures across the Superconductor-Insulator Transition at La 2.85Pr0.15Ni2O7/SrLaAlO4 Interfaces arXiv:2502.18068 (2025)

    Pith/arXiv arXiv 2025

  43. [43]

    Y. Liu, E. K. Ko, Y. Tarn, L. Bhatt, J. Li, V. Thampy, B. H. Goodge, D. A. Muller, S. Raghu, Y. Yu, and H. Y. Hwang, Superconductivity and normal-state transport in compressively strained La 2PrNi2O7 thin films Nat, Mater.24, 1221 (2025)

    2025

  44. [44]

    B. Hao, M. Wang, W. Sun, Y. Yang, Z. Mao, S. Yan, H. Sun, H. Zhang, L. Han, Z. Gu, J. Zhou, D. Ji, and Y. Nie, Superconductivity and phase diagram in Sr-doped La3Ni2O7 thin films Nat. Mater.241756 (2025)

    2025

  45. [45]

    H. Ji, Z. Xie, Y. Chen, G. Zhou, L. Pan, H. Wang, H. Huang, J. Ge, Y. Liu, G.-M. Zhang, Z. Wang, Q.-K. Xue, Z. Chen, and J. Wang, Signatures of spin-glass superconductivity in nickelate (La, Pr, Sm)3Ni2O7 films arXiv:2508.16412 (2025)

    arXiv 2025

  46. [46]

    Osada, C

    M. Osada, C. Terakura, A. Kikkawa, M. Nakajima, H.-Y. Chen, Y. Nomura, Y. Tokura, and A. Tsukazaki, Strain-tuning for superconductivity in La 3Ni2O7 thin films Commun. Phys.8251 (2025)

    2025

  47. [47]

    Y. Tarn, Y. Liu, F. Theuss, J. Li, B. Y. Wang, J. Wang, V. Thampy, Z.-X. Shen, Y. Yu, and H. Y. Hwang, Reducing the strain required for ambient-pressure superconductivity in bilayer nickelates Adv. Mater.38 e20724 (2026)

    2026

  48. [48]

    J. Shen, G. Zhou, Y. Miao, P. Li, Z. Ou, Y. Chen, Z. Wang, R. Luan, H. Sun, Z. Feng, X. Yong, Y. Li, L. Xu, W. Lv, Z. Nie, H. Wang, H. Huang, Y.-J. Sun, Q.-K. Xue, J. He, and Z. Chen, Nodeless superconducting gap and electron-boson coupling in (La,Pr,Sm) 3Ni2O7 Science (2026)

    2026

  49. [49]

    P. Li, G. Zhou, W. Lv, Y. Li, C. Yue, H. Huang, L. Xu, J. Shen, Y. Miao, W. Song, Z. Nie, Y. Chen, H. Wang, W. Chen, Y. Huang, Z.-H. Chen, T. Qian, J. Lin, J. He, Y.-J. Sun, Z. Chen, Q.-K. Xue, Angle-resolved photoemission spectroscopy of superconducting 8 (La,Pr)3Ni2O7/SrLaAlO4 heterostructures Natl. Sci. Rev. nwaf205 (2025)

    2025

  50. [50]

    B. Y. Wang, Y. Zhong, S. Abadi, Y. Liu, Y. Yu, X. Zhang, Y.-M. Wu, R. Wang, J. Li, Y. Tarn, E. K. Ko, V. Thampy, M. Hashimoto, D. Lu, Y. S. Lee, T. P. Devereaux, C. Jia, H. Y. Hwang, and Z.-X. Shen, Electronic structure of compressively strained thin film La2PrNi2O7 arXiv:2504.16372 (2025)

    arXiv 2025

  51. [51]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, A. Moreo, S. Okamoto, T. A. Maier, and E. Dagotto, Compressive Strain Turnss ± intod-Wave Pairing in One-unit-cell La 3Ni2O7 Thin Film Via Substrate-Induced Hole Doping Phys. Rev. B 113, L140505 (2026)

    2026

  52. [52]

    S. Fan, M. Ou, M. Scholten, Q. Li, Z. Shang, Y. Wang, J. Xu, H. Yang, I. M. Eremin, H.-H. Wen, Superconducting gaps revealed by STM measurements on La2PrNi2O7 thin films at ambient pressure Sci. Adv. 12, eaeg2429 (2026)

    2026

  53. [53]

    Geisler, J

    B. Geisler, J. J. Hamlin, G. R. Stewart, R. G. Hennig, and P.J. Hirschfeld, Electronic reconstruction and interface engineering of emergent spin fluctuations in compressively strained La 3Ni2O7 on SrLaAlO 4(001) Phys. Rev. B113, 054516 (2026)

    2026

  54. [54]

    Huang and T

    J. Huang and T. Zhou, Effective perpendicular electric field as a probe for interlayer pairing in ambient-pressure superconducting La 2.85Pr0.15Ni2O7 thin films Phys. Rev. B112, 054506 (2026)

    2026

  55. [55]

    W. Qiu, Z. Luo, X. Hu, and D.-X. Yao, Pairing symmetry and superconductivity in La 3Ni2O7 thin filmsarXiv:2506.20727 (2025)

    arXiv 2025

  56. [56]

    Cao, K.-Y

    Y.-H. Cao, K.-Y. Jiang, H.-Y. Lu, D. Wang, and Q.-H. Wang, Strain-Engineered Electronic Structure and Superconductivity in La 3Ni2O7 Thin Films Sci. China Phys. Mech. Astron.69, 247412 (2026)

    2026

  57. [57]

    Bleys, N

    L. Bleys, N. Corkill, Y.-F. Zhao, G. L. Pascut, H. LaBollita, A. S. Botana, and K. F. Quader, Role of correlations in Ruddlesden-Popper bilayer nickelates under compressive strain arXiv:2509.00940 (2025)

    arXiv 2025

  58. [58]

    G. Zhou, H. Wang, H. Huang, Y. Chen, F. Peng, W. Lv, Z. Nie, W. Wang, Q.-K. Xue, and Z. Chen, Superconductivity onset above 60 K in ambient-pressure nickelate films Natl. Sci. Rev.13nwag151 2026

    2026

  59. [59]

    Y. Liu, B. Y. Wang, J. Li, Y. Tarn, L. Bhatt, M. Colletta, Y.-M. Wu, C.-T. Kuo, J.-S. Lee, B. H. Goodge, D. A. Muller, Z.-X. Shen, S. Raghu, H. Y. Hwang, and Y. Yu, A superconducting half-dome in bilayer nickelates arXiv 2603.12196 (2026)

    arXiv 2026

  60. [60]

    W. Sun, Z. Jiang, B. Hao, S. Yan, H. Zhang, M. Wang, Y. Yang, H. Sun, Z. Liu, D. Ji, Z. Gu, J. Zhou, D. Shen, D. Feng, and Y. Nie Y Observation of superconductivity-induced leading-edge gap in Sr-doped La3Ni2O7 thin films arXiv arXiv 2507.07409 (2025)

    arXiv 2025

  61. [61]

    Z. Han, L. Xiang, X.-J. Zhou, and Z. Zhu, Granular Superconductivity in La 2PrNi2O7−δ Thin Films arXiv 2604.07807 (2026)

    Pith/arXiv arXiv 2026

  62. [62]

    Q. Li, J. Sun, S. Boetzel, M. Ou, Z. Xiang, F. Lechermann, B. Wang, Y. Wang, Y.-J. Zhang, J. Cheng, I. E. Eremin, and H.-H. Wen, Enhanced superconductivity in the compressively strained bilayer nickelate thin films by pressure Nat. Commun.173276 (2026)

    2026

  63. [63]

    Zhao, and A

    Y.-F. Zhao, and A. S. Botana, Electronic structure of Ruddlesden-Popper nickelates: Strain to mimic the effects of pressure Phys. Rev. B111, 115154 (2025)

    2025

  64. [64]

    X.-W. Yi, W. Li, J.-Y. You, B. Gu, and G. Su, Unifying strain- and pressure-driven superconductivity in La3Ni2O7: Suppressed charge and spin density waves and enhanced interlayer coupling Phys. Rev. B112, L140504 (2025)

    2025

  65. [65]

    Geisler, J

    B. Geisler, J. J. Hamlin, G. R. Stewart, R. G. Hennig, and P.J. Hirschfeld, Possible Enhancement of Superconductivity in Ambient-Pressure La3Ni2O7 Thin Film Phys. Rev. B113, 054516 (2026)

    2026

  66. [66]

    Y. Hua, W. He, W.-Q. Chen, J.-J. Miao, and C. Yue, Possible Enhancement of Superconductivity in Ambient-Pressure La 3Ni2O7 Thin Film arXiv 2603.02685 (2026)

    Pith/arXiv arXiv 2026

  67. [67]

    Qiu, and D.-X

    W. Qiu, and D.-X. Yao, Progress of ambient-pressure superconductivity in bilayer nickelate thin films arXiv: 2603.11235 (2026)

    Pith/arXiv arXiv 2026

  68. [68]

    Zhang, L.-F

    Y. Zhang, L.-F. Lin, T. A. Maier, and E. Dagotto,. Superconductivity in Ruddlesden-Popper nickelates: a review of recent progress, focusing on thin films arXiv: 2604.18385 (2026)

    Pith/arXiv arXiv 2026

  69. [69]

    Zhang, and X

    M. Zhang, and X. Yan, Experimental Progress in Ambient-Pressure Superconducting Bilayer Nickelate Films arXiv: 2605.11584 (2026)

    Pith/arXiv arXiv 2026

  70. [70]

    X. Chen, J. Zhang, A.S. Thind, S. Sharma, H. LaBollita, G. Peterson, H. Zheng, D. Phelan, A. S. Botana, R. F. Klie, and J. F. Mitchell, Polymorphism in the Ruddlesden-Popper Nickelate La 3Ni2O7: Discovery of a Hidden Phase with Distinctive Layer Stacking J. Am. Chem. Soc.146, 23640 (2024)

    2024

  71. [71]

    Reiss, N

    Puphal, P. Reiss, N. Enderlein, Y.-M. Wu, G. Khaliullin, V. Sundaramurthy, T. Priessnitz, M. Knauft, L. Richter, M. Isobe, P. A. van Aken, H. Takagi, B. Keimer, Y. E. Suyolcu, B. Wehinger, P. Hansmann, and M. Hepting, Unconventional crystal structure of the high-pressure superconductor La 3Ni2O7 Phys. Rev. Lett.133, 146002 (2024)

    2024

  72. [72]

    H. Wang, L. Chen, A. Rutherford, H. Zhou, and W. Xie, Long-Range Structural Order in a Hidden Phase of Ruddlesden-Popper Bilayer Nickelate La 3Ni2O7 Inorg. Chem.63, 5020 (2024)

    2024

  73. [73]

    S. N. Abadi, K.-J. Xu, E. G. Lomeli, P. Puphal, M. Isobe, Y. Zhong, A. V. Fedorov, S.-K. Mo, M. Hashimoto, D.-H. Lu, B. Moritz, B. Keimer, T. P. Devereaux, M. Hepting, Z.-X. Shen, Electronic Structure of the Alternating Monolayer-Trilayer Phase of La3Ni2O7 Phys. Rev. Lett.134, 126001 (2025)

    2025

  74. [74]

    Huang, J

    C. Huang, J. Li, X. Huang, H. Zhang, D. Hu, M. Huo, X. Chen, Z. Chen, H. Sun, and M. Wang, Superconductivity in monolayer-trilayer phase of La3Ni2O7 under high pressure arXiv 2510.12250 (2025)

    arXiv 2025

  75. [75]

    Zhang, J

    M. Zhang, J. Dou, D. Peng, C. Pei, Q. Wang, Y. Zhao, C. Xiong, S. Li, J. Luo, J. Wu, L. Zhao, Q. Zhang, J. Yang, Y. Chen, J. Zhao, W. Yang, H. Guo, Q. Zeng, R. Zhou, and Y. Qi, spin-density-wave transition in monolayer-trilayer La 3Ni2O7 single crystals arXiv 2601.13090 (2026)

    arXiv 2026

  76. [76]

    Z. Nie, Y. Li, W. Lv, L. Xu, Z. Jiang, P. Fu, G. Zhou, W. Song, Y. Chen, H. Wang, H. Huang, J. Lin, J.-F. Jia, D. Shen, P. Li, Q.-K. Xue, and Z. Chen, Superconductivity and electronic structures of nickelate thin film superstructures Nature652628 (2026)

    2026

  77. [77]

    Momma and F

    K. Momma and F. Izumi, VESTA 3 for three-dimensional visualization of crystal, volumetric, and morphology data J. Appl. Crystallogr.44, 1272 9 (2011)

    2011

  78. [78]

    Kresse and J

    G. Kresse and J. Hafner, Ab initio molecular dynamics for liquid metals Phys. Rev. B47, 558 (1993)

    1993

  79. [79]

    Kresse and J

    G. Kresse and J. Furthm¨ uller, Generalized Gradient Approximation Made Simple Phys. Rev. B54, 11169 (1996)

    1996

  80. [80]

    P. E. Bl¨ ochl, Projector augmented-wave method Phys. Rev. B50, 17953 (1994)

    1994

Showing first 80 references.