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Role of correlations in Ruddlesden-Popper bilayer nickelates under compressive strain

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Pith's one-line read This paper claims that at -2% compressive strain, dynamical correlations place a flat Ni-dz2 band at the Fermi level of La3Ni2O7, reviving the μ Fermi-surface pocket that DFT+U suppresses.

desk verdict First charge-self-consistent eDMFT for strained La327, claiming dynamical correlations resurrect the d_z2 pocket at -2% strain; plausible and new, but the central crossing rests on one U/J setting and needs a sensitivity check. read the letter →

arxiv 2509.00940 v1 pith:KKWGXCVP submitted 2025-08-31 cond-mat.str-el cond-mat.supr-con

Logan Bleys , Nicholas Corkill , Yi-Feng Zhao , Gheorghe Lucian Pascut , Harrison LaBollita , Antia S. Botana , Khandker F. Quader This is my paper · ORCID
classification cond-mat.str-elcond-mat.supr-con
keywords Ruddlesden-PoppernickelatesLa3Ni2O7compressivestraindynamicalmean-fieldtheoryFermisurfacepocketflatbandorbitalselectivitysuperconductivity
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

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

The reading

Compressive strain has recently made the bilayer nickelate La3Ni2O7 superconducting at ambient pressure, but the normal state it emerges from is unresolved. This paper argues that dynamical electron correlations—not the static correlations of DFT+U—control that normal state. Using fully charge-self-consistent DFT plus embedded dynamical mean-field theory, it finds that at the experimentally relevant -2% strain a bonding Ni-dz2 band crosses the Fermi level as a flat band, creating the μ Fermi-surface pocket that static calculations push below the Fermi level. If correct, the low-energy physics of strained La327 is genuinely multi-orbital, with both dz2 and dx2-y2 active, and the strain window in which superconductivity appears may be tied to the presence of this pocket.

What carries the argument

The machinery is fully charge self-consistent DFT + embedded dynamical mean-field theory (eDMFT), using localized Ni-3d orbitals, a five-orbital Slater Hamiltonian with U = 7 eV and J = 1 eV, an exact double-counting correction, and a continuous-time quantum Monte Carlo impurity solver. The dynamical self-energy renormalizes the dz2 bands, drastically reducing the bonding-antibonding splitting so that the bonding dz2 band crosses the Fermi level at -2% strain, while dx2-y2 remains more strongly hybridized and coherent. This dynamical renormalization is what distinguishes the eDMFT result from the static DFT+U picture.

What would settle it

A direct photoemission measurement on stoichiometric La3Ni2O7 films under -2% biaxial strain: if the bonding dz2 band is unambiguously observed below the Fermi level and not crossing it, the paper's central claim fails. A complementary computational falsifier is an eDMFT scan over U = 6-8 eV at -2% strain; if the dz2 band stays below the Fermi level throughout that range, the pocket is an artifact of a single parametrization.

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Extended reading notes

Core claim

The central claim is that at -2% compressive strain—the strain at which superconductivity has been observed—the bonding dz2 band, which in DFT and DFT+U lies below the Fermi level, is pushed back across the Fermi level by dynamical correlations, producing the μ pocket and a flat-band feature along the X-M-Γ path. Both Ni-eg orbitals then cross the Fermi level, so a two-orbital description is needed for the normal state. At -3% strain the μ pocket is suppressed, and at 0% strain neither eg orbital is fully coherent at 300 K, whereas at -2% strain dx2-y2 is coherent at 300 K but dz2 only reaches coherence at 100 K. The results are presented as a direct contrast with static DFT+U and as compati

Load-bearing premise

The results assume the interaction strengths and the way the DFT and correlated parts are reconciled are correct; the band that matters crosses the Fermi level only under that assumption, and the paper does not test how much those choices can vary.

Editorial extensions

If this is right

  • Because the μ pocket reappears only when correlations are treated dynamically, DFT+U-based predictions for strained La327 miss a Fermi-surface sheet that may be decisive for pairing.
  • Both dz2 and dx2-y2 eg orbitals cross the Fermi level at -2% strain, so the normal state is multi-orbital and single-orbital effective models are incomplete.
  • Strain tunes the μ pocket: it is present at -2% but gone by -3%, so if superconductivity depends on the pocket, it should be confined to a narrow strain window.
  • The flat dz2 band at the Fermi level and its slower coherence onset indicate orbital-selective correlation effects in the normal state.
  • A strain series across the -2% to -3% range would directly test the predicted Fermi-surface evolution and its link to superconductivity.
  • Since the paper does not compute pairing, its results set the normal-state Fermi surface that any pairing-symmetry calculation for strained La327 should start from.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • If the μ pocket is what enables the observed ~30-40 K superconductivity in strained La327, the same mechanism should operate under pressure in unstrained La327, where the pocket also appears; comparing the two could isolate strain's specific role.
  • The flat dz2 band near the Fermi level may act as a pairing-enhancement source, so a strain series that tunes this band through the Fermi level could produce a non-monotonic Tc versus strain—an experimentally testable signature.
  • Because dz2 is incoherent near 300 K while dx2-y2 is coherent, resistivity or optical conductivity may show orbital-selective fingerprints, providing an experimentally accessible check of the two distinct coherence scales.
  • The U and J values are inherited from infinite-layer nickelates and are not scanned here; a constrained-RPA or GW estimate of U for the strained bilayer would be a direct check on whether the μ pocket survives at -2% strain.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

2 major / 5 minor

Summary. The paper reports fully charge self-consistent DFT+embedded DMFT (eDMFT) calculations for bilayer Ruddlesden-Popper nickelate La3Ni2O7 under compressive strain, using a CTQMC impurity solver for the Ni-3d shell. Three strain states are studied: unstrained Amam (0%) and Fmmm (-2% and -3%). The central claim is that at -2% strain—the strain level at which superconductivity is observed—the bonding dz2 band crosses the Fermi level, producing an extra gamma/mu Fermi-surface pocket with flat-band-like character, in contrast to DFT and DFT+U results where this band lies below EF. At -3% strain the pocket is suppressed. The authors further report orbital-selective coherence: dx2-y2 becomes coherent at 300 K, while dz2 is still incoherent at 300 K and only becomes coherent at lower temperature. They conclude that multi-orbital eg physics is relevant for the strained bilayer and that the mu pocket may exist only in a narrow strain window.

Significance. If correct, the result is significant: it challenges the prevailing DFT+U-based picture that the dz2 bonding band is inert at the superconducting strain and would place strained La327 in a two-orbital (dx2-y2 + dz2) description with consequences for pairing-symmetry calculations. The methodological strengths are real: the calculations are fully charge self-consistent, use a spin-rotation-invariant Slater interaction, cover several strain levels with experimentally motivated structures, and compare against DFT/DFT+U. However, the central band-crossing result rests on a single interaction parametrization and a single double-counting scheme, with no sensitivity analysis. Because the claimed crossing is a cancellation between static Hartree shifts and dynamical self-energy effects, the result is not yet quantitatively robust. An explicit U/J and double-counting sensitivity study is needed before the gamma pocket can be treated as a firm prediction.

major comments (2)
  1. [Methods, eDMFT paragraph; Results, Sec. II] The central claim—the emergence of the gamma/mu pocket at -2% strain—depends on a single interaction parametrization, U=7 eV and J=1 eV, transferred from constrained DMFT results for infinite-layer nickelates (Ref. [41]), and on the 'exact-d' double-counting scheme (Ref. [39]). No sensitivity scan over U/J or double-counting is reported. Since DFT and DFT+U bracket EF from opposite sides, the eDMFT crossing is a cancellation between the Hartree shift and the dynamical self-energy; a change of tens of meV in the dz2 level determines whether the pocket exists. I request at least a U/J scan (e.g., U=6-8 eV, J=0.5-1.5 eV) and, ideally, a check with an alternative double-counting prescription. The reported self-consistent occupation nd~8.2 versus the nominal 7.5 (Sec. II, 'eDMFT density of states and hybridization functions') underlines that the solution is not at a simple nominal filling, ma
  2. [Results, Fig. 1(c), Fig. 3(b); Methods, analytic continuation] The flat-band crossing at -2% strain is extracted from maximum-entropy analytic continuation of CTQMC data at 300 K. At this temperature the dz2 imaginary self-energy does not extrapolate to zero at zero Matsubara frequency (Fig. 3b), so the dz2 spectral function is broad and the 'flat-band' feature is not a sharp quasiparticle peak. The paper provides no quantitative estimate of the energy separation between the dz2 band and EF, nor any uncertainty/quality-of-fit measure for the MaxEnt result. The authors should provide a direct estimate of the crossing energy (for instance from the real-axis self-energy or from the 100 K spectral functions in Supplementary Note 2) and state how robust the crossing is to the analytic-continuation procedure.
minor comments (5)
  1. [Abstract and Sec. II] The notation for the Fermi-surface pocket is inconsistent: the abstract and main text call it the mu pocket, the abstract also refers to the gamma/mu pocket, and Supplementary Figure 1d calls it the gamma sheet. Please unify the notation.
  2. [Title/header] The title contains a typo: 'compress ive' should be 'compressive'.
  3. [Fig. 1] The color scale for the orbital-resolved spectral functions is not defined. A color bar or explicit statement of what the color encodes (e.g., orbital weight/hybridization) would improve readability.
  4. [Methods, eDMFT paragraph] The statement 'at least 15 x 10^6 MC steps' is ambiguous. Please specify whether this is the total number of Monte Carlo steps or the number per measurement bin/sweep, and how the number was increased at lower temperature.
  5. [Data availability] The data availability statement relies on 'reasonable request'. Given the community interest in this material and the sensitivity of the central result, depositing input files and representative output (e.g., self-energies, spectral functions) in a public repository would be more consistent with best practices.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the eDMFT γ/μ pocket is an emergent many-body output, not a fitted input or self-citation reduction.

full rationale

After walking the derivation chain, I find no circular step of the type targeted by the review. The central result—the emergence of the γ/μ pocket at −2% strain in eDMFT—is an output of the charge-self-consistent DFT+eDMFT loop: the orbital-resolved spectral functions and Fermi surfaces (Fig. 1c,g,h) are obtained by solving the quantum impurity problem with CTQMC and the exact-d double-counting scheme, not by fitting to the pocket or by defining the input in terms of the output. The interaction parameters U = 7 eV and J = 1 eV are taken from Ref. [41], a constrained-DMFT study of infinite-layer nickelates with overlapping authorship (Pascut and Quader); however, that citation supplies a parameter set, not the strained-La327 pocket conclusion, and it is neither fitted to nor derived from the present result. No uniqueness theorem or functional-form ansatz is imported via self-citation; the exact-d double-counting is a fixed methodological choice from Ref. [39] (Haule), and the paper makes external comparisons against DFT, DFT+U, and ARPES. The strained structures also come from the authors' prior paper [29], but those are relaxed crystal-structure inputs, not the electronic-structure conclusion. The paper explicitly flags its own caveats—the ARPES situation is unsettled and the Fermi-level placement is stoichiometry-sensitive, and the DMFT occupation nd ≈ 8.2 exceeds the nominal d7.5—but these are robustness/accuracy concerns, not evidence that a prediction reduces to an input by construction. The absence of a U/J sensitivity scan is a legitimate scientific concern, but it is not circularity under the stated rules.

Assumptions & free parameters 2 free parameters · 5 assumptions · 0 invented entities

The central claim rests on the local self-energy DMFT approximation, the exact double-counting choice, transferred U/J values from a self-cited prior paper, and the assumed Fmmm structure at -2%/-3%. None of these is re-derived or stress-tested within this paper; the emergent pocket is therefore an output conditioned on those inputs.

free parameters (2)
  • Coulomb U for Ni-3d (Slater Hamiltonian) = 7 eV
    Coulomb repulsion in the five-orbital impurity problem; taken from previous constrained DMFT results [41] for infinite-layer nickelates, not recalculated for La327 under strain. The central band-crossing result is not tested for U variation.
  • Hund's coupling J = 1 eV
    Same constrained-DMFT source as U; affects orbital selectivity and self-energy, and is not varied for the strained bilayer system.
assumptions (5)
  • domain assumption Dynamical mean-field theory with a local self-energy is a quantitatively adequate approximation for the normal state of La327 under strain.
    All Ni-3d correlations are treated via a single-site impurity problem; nonlocal spatial correlations are neglected. Invoked throughout Results and Methods.
  • domain assumption Haule's exact double-counting [39] correctly subtracts static Hartree terms; chemical potential and band positions depend on it.
    Methods (eDMFT) paragraph: 'we employed an exact-d double-counting [39]'. A different double-counting would shift bands and could remove the crossing.
  • ad hoc to paper U=7 eV and J=1 eV from constrained DMFT of infinite-layer nickelates [41] transfer to strained bilayer La327.
    No constrained-RPA or U scan for this system is reported; the authors use values 'motivated by previous constrained DMFT results [41]'.
  • domain assumption The -2% and -3% strain states are represented by Fmmm symmetry without octahedral tilts, following [40] and the authors' own [29].
    Results section states Fmmm is used for -2% and -3%; band dispersion and Fermi surface are sensitive to this structural choice.
  • domain assumption The maximum entropy method gives real-frequency spectral functions accurate enough to locate the dz2 band relative to EF.
    Figures 1 are maxent continuations of CTQMC data; no uncertainty or cross-checks with alternative analytic continuation are given.

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Cite this review

Pith. "Pith review of Role of correlations in Ruddlesden-Popper bilayer nickelates under compressive strain." pith.science (2026). https://pith.science/paper/KKWGXCVP

@misc{pith2026250900940,
  author       = {Pith},
  title        = {Pith review of: Role of correlations in Ruddlesden-Popper bilayer nickelates under compressive strain},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/KKWGXCVP}},
  note         = {Machine review of arXiv:2509.00940}
}
abstract

The recent discovery of superconductivity in thin films of the bilayer Ruddlesden-Popper (RP) nickelate La$_3$Ni$_2$O$_7$ (La327) under compressive strain has generated enormous interest, opening up further opportunities to stabilize superconductivity in this class of materials at ambient pressure. To better understand the many-body normal state from which superconductivity arises, it is important to ascertain the nature and role of correlations in its electronic structure. To provide insights into this question, we use a fully charge self-consistent DFT+e-DMFT (eDMFT) approach to study La327 at several compressive strain levels. At the strain level where superconductivity has been observed experimentally (-2\%), in contrast with DFT and DFT+$U$ results, the so-called $\gamma$ pocket emerges and the associated band, of mostly $d_{z^2}$ character, crosses the Fermi level exhibiting `flat band''-like features when dynamical correlations are included. Larger strain levels suppress the $\gamma$ pocket, which may have implications for superconductivity or its pairing symmetry.

Figures

Figures reproduced from arXiv: 2509.00940 by the authors.

Figure 1
Figure 1. FIG. 1 [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 3
Figure 3. FIG. 3 [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗
Figure 2
Figure 2. FIG. 2 [PITH_FULL_IMAGE:figures/full_fig_p004_2.png] view at source ↗

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Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Compressive Strain Turns $s^{\pm}$ into $d$-Wave Pairing in One-unit-cell La$_3$Ni$_2$O$_7$ Thin Film Via Substrate-Induced Hole Doping

    cond-mat.supr-con 2025-12 conditional novelty 5.0 of 10

    Hole doping drives the pairing in strained 1-unit-cell La3Ni2O7 films from weak/nonexistent to a d_x2-y2 (then d_xy) wave, through intra-layer spin fluctuations within the γ pocket.

Reference graph

Works this paper leans on

53 extracted references · 36 canonical work pages · cited by 1 Pith paper

  1. [41]

    L., Cosovanu, L., Haule, K

    Pascut, G. L., Cosovanu, L., Haule, K. & Quader, K. F. Correlation-temperature phase diagram of prototypical infinite layer rare earth nicke- lates. Communications Physics 45 (2023). URL https://doi.org/10.1038/s42005-023-01163-7

    work page doi:10.1038/s42005-023-01163-7 2023

  2. [39]

    Exact double counting in combining the dy- namical mean field theory and the density functional the- ory

    Haule, K. Exact double counting in combining the dy- namical mean field theory and the density functional the- ory. Phys. Rev. Lett. 115, 196403 (2015). URL https:// link.aps.org/doi/10.1103/PhysRevLett.115.196403

    doi:10.1103/physrevlett.115.196403 2015

  3. [1]

    Bednorz, J. G. & M¨ uller, K. A. Possible high Tc su- perconductivity in the Ba-La-Cu-O system. Z. Phys. B 64, 189–193 (1986). URL https://doi.org/10.1007/ BF01303701

    work page 1986

  4. [2]

    Norman, M. R. Materials design for new supercon- ductors. Reports on Progress in Physics 79, 074502 (2016). URL https://dx.doi.org/10.1088/0034-4885/ 79/7/074502

    doi:10.1088/0034-4885/ 2016

  5. [3]

    Mitchell, J. F. A nickelate renaissance. Frontiers in Physics V olume 9 - 2021 (2021). URL https://www.frontiersin.org/journals/physics/ articles/10.3389/fphy.2021.813483

    work page arXiv 2021

  6. [4]

    S., Lee, K.-W., Norman, M

    Botana, A. S., Lee, K.-W., Norman, M. R., Pardo, V. & Pickett, W. E. Low valence nick- elates: Launching the nickel age of superconduc- tivity. Frontiers in Physics V olume 9 - 2021 (2022). URL https://www.frontiersin.org/journals/ physics/articles/10.3389/fphy.2021.813532

    work page arXiv 2021

  7. [5]

    Li, D. et al. Superconductivity in an infinite-layer nick- elate. Nature 572, 624–627 (2019). URL https://doi. org/10.1038/s41586-019-1496-5

    doi:10.1038/s41586-019-1496-5 2019

  8. [6]

    Osada, M. et al. A superconducting praseodymium nickelate with infinite layer structure. Nano Letters 20, 5735–5740 (2020). URL https://doi.org/10.1021/ acs.nanolett.0c01392

    work page 2020

Show all 53 references
  1. [7]

    Shengwei, Z. et al. Superconductivity in infinite-layer nickelate La1− xCaxNiO2 thin films. Science Advances 8, 9927 (2022). URL https://doi.org/10.1126/sciadv. abl9927

    2022 doi

  2. [8]

    Pan, G. A. et al. Superconductivity in a quintuple-layer square-planar nickelate. Nat. Mater. (2021). URL https: //doi.org/10.1038/s41563-021-01142-9

    2021 doi

  3. [9]

    Sun, H. et al. Signatures of superconductivity near 80 K in a nickelate under high pressure. Nature 621, 493–498 (2023). URL https://doi.org/10.1038/ s41586-023-06408-7

    2023

  4. [10]

    Wang, N. et al. Bulk high-temperature superconduc- tivity in pressurized tetragonal La 2PrNi2O7. Nature 634, 579–584 (2024). URL https://doi.org/10.1038/ s41586-024-07996-8

    2024

  5. [11]

    Hou, J. et al. Emergence of high-temperature su- perconducting phase in pressurized La 3Ni2O7 crystals. Chin. Phys. Lett. 40, 117302 (2023). URL https://cpl. iphy.ac.cn/EN/abstract/article_116425.shtml

    2023

  6. [12]

    Zhang, M. et al. Superconductivity in trilayer nick- elate La 4Ni3O10 under pressure. Phys. Rev. X 15, 021005 (2025). URL https://link.aps.org/doi/10. 1103/PhysRevX.15.021005

    2025

  7. [13]

    Li, Q. et al. Signature of superconductivity in pressurized La 4Ni3O10. Chin. Phys. Lett. 41, 017401 (2024). URL https://dx.doi.org/10.1088/0256-307X/ 41/1/017401

    2024 doi

  8. [14]

    Zhu, Y. et al. Superconductivity in pressurized trilayer La 4Ni3O10− δ single crystals. Nature 631, 531–536 (2024). URL https://doi.org/10.1038/ s41586-024-07553-3

    2024

  9. [15]

    Ko, E. K. et al. Signatures of ambient pressure superconductivity in thin film La 3Ni2O7. Nature 638, 935–940 (2025). URL https://doi.org/10.1038/ s41586-024-08525-3

    2025

  10. [16]

    Zhou, G. et al. Ambient-pressure superconductivity onset above 40 K in (La,Pr) 3Ni2O7 films. Nature 640, 641–646 (2025). URL https://doi.org/10.1038/ s41586-025-08755-z

    2025

  11. [17]

    Liu, Y. et al. Supelconductivity and normal-state trans- port in compressively strained La 2PrNi2O7 thin films. Nature Materials 24, 1221–1227 (2025). URL https: //doi.org/10.1038/s41563-025-02258-y

    2025 doi

  12. [18]

    & Yao, D.-X

    Luo, Z., Hu, X., Wang, M., W´ u, W. & Yao, D.-X. Bilayer two-orbital model of La 3Ni2O7 under pressure. Phys. Rev. Lett. 131, 126001 (2023). URL https:// link.aps.org/doi/10.1103/PhysRevLett.131.126001

    2023 doi

  13. [19]

    & Dagotto, E

    Zhang, Y., Lin, L.-F., Moreo, A. & Dagotto, E. 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). URL https://link.aps.org/doi/ 10.11...

    2023 doi

  14. [20]

    & Wang, Q.-H

    Yang, Q.-G., Wang, D. & Wang, Q.-H. Possible s± - wave superconductivity in La 3Ni2O7. Phys. Rev. B 108, L140505 (2023). URL https://link.aps.org/doi/10. 1103/PhysRevB.108.L140505

    2023

  15. [21]

    & Wang, Q.-H

    Yang, Q.-G., Jiang, K.-Y., Wang, D., Lu, H.-Y. & Wang, Q.-H. Effective model and s± -wave superconductiv- ity in trilayer nickelate La 4Ni3O10. Phys. Rev. B 109, L220506 (2024). URL https://link.aps.org/doi/10. 1103/PhysRevB.109.L220506

    2024

  16. [22]

    Zhang, M. et al. s± -wave superconductivity in pressurized La 4Ni3O10. Phys. Rev. B 110, L180501 (2024). URL https://link.aps.org/doi/10.1103/ PhysRevB.110.L180501

    2024

  17. [23]

    & Kuroki, K

    Sakakibara, H., Kitamine, N., Ochi, M. & Kuroki, K. Possible high Tc superconductivity in La 3Ni2O7 under high pressure through manifestation of a nearly half- filled bilayer Hubbard model. Phys. Rev. Lett. 132, 106002 (2024). URL https://link.aps.org/doi/10. 1103/PhysRevLett.1...

    2024

  18. [24]

    & Werner, P

    Christiansson, V., Petocchi, F. & Werner, P. Corre- lated electronic structure of La 3Ni2O7 under pressure. Phys. Rev. Lett. 131, 206501 (2023). URL https:// link.aps.org/doi/10.1103/PhysRevLett.131.206501

    2023 doi

  19. [25]

    & Eremin, I

    Lechermann, F., Gondolf, J., B¨ otzel, S. & Eremin, I. M. Electronic correlations and superconducting instability in La 3Ni2O7 under high pressure. Phys. Rev. B 108, L201121 (2023). URL https://link.aps.org/doi/10. 1103/PhysRevB.108.L201121

    2023

  20. [26]

    Zhang, Y., Lin, L.-F., Moreo, A., Maier, T. A. & Dagotto, E. Prediction of s± -wave superconductiv- ity enhanced by electronic doping in trilayer nicke- lates La 4Ni3O10 under pressure. Phys. Rev. Lett. 133, 136001 (2024). URL https://link.aps.org/doi/10. 1103/PhysRevLett.133.136001

    2024

  21. [27]

    Zhang, Y., Lin, L.-F., Moreo, A., Maier, T. A. & Dagotto, E. Structural phase transition, s ± -wave pair- ing, and magnetic stripe order in bilayered supercon- ductor La 3Ni2O7 under pressure. Nat. Commun. 15, 2470 (2024). URL https://www.nature.com/articles/ s41467-024-46622-z

    2024

  22. [28]

    Lu, C., Pan, Z., Yang, F. & Wu, C. Interlayer- coupling-driven high-temperature superconductivity in La3Ni2O7 under pressure. Phys. Rev. Lett. 132, 146002 8 (2024). URL https://link.aps.org/doi/10.1103/ PhysRevLett.132.146002

    2024

  23. [29]

    & Botana, A

    Zhao, Y.-F. & Botana, A. S. Electronic structure of Ruddlesden-Popper nickelates: Strain to mimic the effects of pressure. Phys. Rev. B 111, 115154 (2025). URL https://link.aps.org/doi/10.1103/ PhysRevB.111.115154

    2025

  24. [30]

    R., Hen- nig, R

    Benjamin Geisler, B., Hamlin, J., Stewart, G. R., Hen- nig, R. & Hirschfeld, P. Electronic reconstruction and interface engineering of emergent spin fluctuations in compressively strained La 3Ni2O7 on SrLaAlO 4(001). arXiv, cond-mat.supr-con (2025). URL https://arxiv. org/abs/2...

    2025

  25. [31]

    Yi, X.-W., Li, W., You, J.-Y., Gu, B. & Su, G. Uni- fying strain-driven and pressure-driven superconductiv- ity in La 3Ni2O7: Suppressed charge/spin density waves and enhanced interlayer coupling (2025). URL https: //arxiv.org/abs/2505.12733. 2505.12733

    2025

  26. [32]

    Bhatta, H. C. R. B., Zhang, X., Zhong, Y. & Jia, C. Structural and electronic evolution of bilayer nickelates under biaxial strain (2025). URL https://arxiv.org/ abs/2502.01624. 2502.01624

    2025 arXiv

  27. [33]

    Rhodes, L. C. & Wahl, P. Structural routes to stabilize superconducting La 3Ni2O7 at ambient pres- sure. Phys. Rev. Mater. 8, 044801 (2024). URL https://journals.aps.org/prmaterials/abstract/ 10.1103/PhysRevMaterials.8.044801

    2024 doi

  28. [34]

    Wang, B. Y. et al. Electronic structure of compressively strained thin film La 2PrNi2O7 (2025). URL https:// arxiv.org/abs/2504.16372. 2504.16372

    2025 arXiv

  29. [35]

    Li, P. et al. Angle-resolved photoemission spectroscopy of superconducting (La,Pr) 3Ni2O7/SrLaAlO4 heterostruc- tures. National Science Review nwaf205 (2025). URL https://doi.org/10.1093/nsr/nwaf205

    2025 doi

  30. [36]

    & Rozenberg, M

    Georges, A., Kotliar, G., Krauth, W. & Rozenberg, M. J. Dynamical mean-field theory of strongly corre- lated fermion systems and the limit of infinite dimen- sions. Rev. Mod. Phys. 68, 13–125 (1996). URL https: //link.aps.org/doi/10.1103/RevModPhys.68.13

    1996 doi

  31. [37]

    Kotliar, G. et al. Electronic structure calculations with dynamical mean-field theory. Rev. Mod. Phys. 78, 865– 951 (2006). URL https://link.aps.org/doi/10.1103/ RevModPhys.78.865

    2006

  32. [38]

    & Kim, K

    Haule, K., Yee, C.-H. & Kim, K. Dynamical mean- field theory within the full-potential methods: Electronic structure of ceirin 5, cecoin 5, and cerhin 5. Phys. Rev. B 81, 195107 (2010). URL https://link.aps.org/doi/ 10.1103/PhysRevB.81.195107

    2010 doi

  33. [40]

    Bhatt, L. et al. Resolving structural origins for super- conductivity in strain-engineered La 3Ni2O7 thin films. arXiv, cond-mat.supr-con (2025). URL https://arxiv. org/abs/2501.08204

    2025 arXiv

  34. [42]

    & Pickett, W

    Pardo, V. & Pickett, W. E. Quantum confinement in- duced molecular correlated insulating state in La 4Ni3O8. Phys. Rev. Lett. 105, 266402 (2010). URL https:// link.aps.org/doi/10.1103/PhysRevLett.105.266402

    2010 doi

  35. [43]

    & Pickett, W

    Pardo, V. & Pickett, W. E. Metal-insulator transi- tion in layered nickelates La 3Ni2O7− δ (¶ = 0.0, 0.5, 1). Phys. Rev. B 83, 245128 (2011). URL https://link. aps.org/doi/10.1103/PhysRevB.83.245128

    2011 doi

  36. [44]

    Yang, J. et al. Orbital-dependent electron correla- tion in double-layer nickelate La 3Ni2O7. Nat. Commun. 15, 4373 (2024). URL https://doi.org/10.1038/ s41467-024-48701-7

    2024

  37. [45]

    Ushio, K. et al. Theoretical study on ambient pressure su- perconductivity in La 3Ni2O7 thin films : structural anal- ysis, model construction, and robustness of s± -wave pair- ing (2025). URL https://arxiv.org/abs/2506.20497. 2506.20497

    2025 arXiv

  38. [46]

    Duan, G. et al. Orbital-selective correlation effects and superconducting pairing symmetry in a multiorbital t- j model for bilayer nickelates (2025). URL https:// arxiv.org/abs/2502.09195

    2025 arXiv

  39. [47]

    Lifshitz, I. M. Anomalies of electron characteristics in the high pressure region. Zhur. Eksptl’. i Teoret. Fiz. V ol: 38 (1960). URL https://www.osti.gov/biblio/ 4173345

    1960

  40. [48]

    & Widom, M

    Quader, K. & Widom, M. Lifshitz and other tran- sitions in alkaline-earth 122 pnictides under pressure. Phys. Rev. B 90, 144512 (2014). URL http://link. aps.org/doi/10.1103/PhysRevB.90.144512

    2014 doi

  41. [49]

    & Hafner, J

    Kresse, G. & Hafner, J. Ab initio molecular dy- namics for liquid metals. Phys. Rev. B 47, 558– 561 (1993). URL https://link.aps.org/doi/10.1103/ PhysRevB.47.558

    1993

  42. [50]

    Bl¨ ochl, P. E. Projector augmented-wave method. Phys. Rev. B 50, 17953–17979 (1994). URL https: //link.aps.org/doi/10.1103/PhysRevB.50.17953

    1994 doi

  43. [51]

    & Furthm¨ uller, J

    Kresse, G. & Furthm¨ uller, J. Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set. Phys. Rev. B 54, 11169– 11186 (1996). URL https://link.aps.org/doi/10. 1103/PhysRevB.54.11169

    1996

  44. [52]

    P., Burke, K

    Perdew, J. P., Burke, K. & Ernzerhof, M. Generalized gradient approximation made simple. Phys. Rev. Lett. 77, 3865–3868 (1996). URL https://link.aps.org/ doi/10.1103/PhysRevLett.77.3865

    1996 doi

  45. [53]

    Blaha, P. et al. Wien2k: An APW+lo program for calculating the properties of solids. J. Chem. Phys. 152, 074101 (2020). URL https://doi.org/10.1063/ 1.5143061. Supplementary Information: Role of correlations in Ruddlesden-Popper bilayer nickelates under compressive strain Loga...

    2020

Pith tools

Reviewed August 5, 2026 · model on record in the stance chip above.