Pith. sign in

REVIEW 1 major objections 5 minor 4 cited by

Electronic structure of Ruddlesden-Popper nickelates: strain to mimic the effects pressure

T0 review · 1 major / 5 minor · reviewed 2026-08-11 · deepseek-v4-flash

Challenge this review Re-run · record.json Download PDF Read on arXiv ↗ Review JSON

Pith's one-line read Biaxial tensile strain reproduces the pressure-induced electronic structure of Ruddlesden-Popper nickelates at ambient pressure.

desk verdict Solid DFT study showing tensile strain recovers the pressure-like dz2 pocket in RP nickelates; the n=4,5 legs rest on assumed structures, but the n=2,3 core holds up. read the letter →

arxiv 2412.04391 v4 pith:2IPTUEBG submitted 2024-12-05 cond-mat.supr-con

Yi-Feng Zhao , Antia S. Botana This is my paper · ORCID
classification cond-mat.supr-con PACS 74.70.-b71.18.+y71.15.Mb
keywords Ruddlesden-Poppernickelatesbiaxialstrainhigh-pressuresuperconductivityd_z2flatbandgammapocketdensityfunctionaltheoryLa3Ni2O7La4Ni3O10
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

The paper uses density-functional theory to show that biaxial strain can decouple the structural and electronic-structure effects that hydrostatic pressure produces in Ruddlesden-Popper nickelates. Compressive strain straightens the Ni-O-Ni octahedral angle toward 180 degrees, but it pushes the flat Ni-$d_{z^2}$ band below the Fermi level, producing a more cuprate-like Fermi surface. Tensile strain increases the tilts, yet it restores the pure $d_{z^2}$ band crossing the Fermi level, the same $\gamma$ pocket that appears under pressure and is linked to superconductivity in the bilayer and trilayer compounds. The paper presents this as a route to ambient-pressure superconductivity in thin films and as a way to test which structural and electronic features are actually required.

What carries the argument

The argument is carried by constrained-biaxial-strain density-functional relaxations: the in-plane lattice constants are fixed at a chosen strain, and the out-of-plane lattice constant and atomic positions are relaxed. The electronic-structure object that matters is the flat Ni-$d_{z^2}$ bonding band and its Fermi-surface pocket, the $\gamma$ pocket, traced across strain and pressure. The structural marker tracked alongside is the apical Ni-O-Ni angle. Wannier downfolding supplies hopping ratios that connect the strain trends to the pairing-symmetry debate in the literature, in particular the out-of-plane $d_{z^2}$ hopping relative to the in-plane $d_{x^2-y^2}$ hopping.

What would settle it

Angle-resolved photoemission on a La3Ni2O7 film grown under roughly +3% tensile strain should show the pure $d_{z^2}$ gamma pocket at the M point if the prediction is right; its absence would falsify the electronic-structure claim. Separately, diffraction on n=4 and n=5 films could check whether the assumed I4/mmm ambient structures are real, since wrong starting structures would undermine the higher-order predictions.

Watch

Extended reading notes

Core claim

For La$_{n+1}$Ni$_n$O$_{3n+1}$ with n = 2 to 5, the paper claims that tensile biaxial strain can mimic the electronic structure of the pressurized state even though it does not reproduce the pressure-induced structural straightening of the octahedra. At 3% tensile strain, the flat bonding band of pure $d_{z^2}$ character crosses the Fermi level, forming the $\gamma$ pocket, in La3Ni2O7 and La4Ni3O10, and the same pocket appears in the n = 4 and n = 5 members when strained. At 3% compressive strain, the apical Ni-O-Ni angle moves closer to 180 degrees, but the $d_{z^2}$ band moves below the Fermi level and the $\gamma$ pocket is absent, giving a cuprate-like fermiology. The paper concludes that the out-of-plane Ni-Ni distance, rather than the tilt angle, is the key parameter controlling the pocket, and that strain offers a way to decouple the structural and electronic effects of pressure.

Load-bearing premise

For the four-layer and five-layer Ruddlesden-Popper nickelates, the calculations assume tetragonal I4/mmm ambient-pressure structures that have not been confirmed experimentally; if the real films have different octahedral tilts or layer stackings, the predicted strain trends, including the recovery of the gamma pocket, could change.

Editorial extensions

If this is right

  • A 3% tensile strain on La3Ni2O7 and La4Ni3O10 films should produce the pressure-like $\gamma$ pocket at ambient pressure, giving an angle-resolved photoemission signature that high-pressure experiments cannot easily reach.
  • A 3% compressive strain should give a cuprate-like Fermi surface with the $d_{z^2}$ flat band fully occupied, so comparing tensile and compressive films would test whether the $\gamma$ pocket is required for superconducting signatures.
  • The calculations identify the out-of-plane Ni-Ni distance, not the octahedral tilt angle, as the controlling parameter for the pocket, implying that films with the same c-axis compression but different tilts should behave similarly.
  • Higher-order members with n = 4 and n = 5, which are only stable as thin films, are predicted to show the same $\gamma$-pocket recovery under tensile strain, making them candidate members of a thin-film superconducting family.
  • The Wannier-derived hopping ratios move in the direction associated with s$\pm$ pairing under tensile strain and away from it under compressive strain, suggesting strain can tune between pairing regimes.

Reading between the lines

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

  • If the $\gamma$ pocket is the superconducting switch, tensile-strained films become the cleanest ambient-pressure laboratory for testing s$\pm$ pairing, because photoemission and transport could be done without high-pressure cells; this experimental consequence is implicit in the paper rather than stated.
  • The compressive-strain cuprate-like state offers a controlled comparison with infinite-layer nickelates: if such films do not superconduct, it would strengthen the view that the $d_{z^2}$ pocket, not the NiO2 planes alone, is essential to the RP nickelate superconductivity.
  • The most likely quantitative weak point is the DFT level of theory used to place the flat band; adding dynamical correlations on the strained structures could shift the crossover strain at which the $\gamma$ pocket appears, and this is a direct computational next step the paper leaves open.
  • A broader extension is that the same decoupling logic may apply to other pressure-tuned layered oxides, where tensile strain could recover pressure-induced fermiology without the structural collapse, though that transfers the mechanism beyond the nickelates.
Share X Bluesky LinkedIn Reddit HN

Signed reviews

No signed human review yet.

Editorial analysis

A structured set of objections, weighed in public.

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

Referee Report

1 major / 5 minor

Summary. The paper uses first-principles DFT (VASP relaxations, WIEN2K band structures, and Wannier downfolding) to study the effect of biaxial strain (from -3% to +3%) on the structural and electronic properties of Ruddlesden-Popper nickelates La_{n+1}Ni_nO_{3n+1} with n = 2-5. The central finding is that strain decouples the structural and electronic-structure effects of hydrostatic pressure: compressive strain suppresses octahedral tilts (bringing the apical Ni-O-Ni angle closer to 180 degrees) but shifts the d_{z^2} flat band below the Fermi level, resulting in a cuprate-like electronic structure; tensile strain increases tilts and lowers the out-of-plane Ni-Ni distance, yet recovers the pure d_{z^2} gamma pocket at the Fermi level that is the hallmark of pressurized bilayer and trilayer RP nickelates. The authors propose tensile biaxial strain as a route to replicate at ambient pressure the fermiology associated with pressure-induced superconductivity, and compressive strain as a route to investigate cuprate-like physics and possible d-wave pairing.

Significance. If the conclusions hold, the paper provides a concrete and experimentally actionable prediction: tensile-strained thin films of RP nickelates (including higher-order members up to n = 5) should display the same gamma-pocket fermiology that accompanies pressure-induced superconductivity, while compressive strain should yield a cuprate-like electronic structure. The work is strengthened by the use of standard, well-documented computational methods, the comparison of Amam/Fmmm and Bmab/I4/mmm starting symmetries for n = 2 and n = 3, the explicit Wannier-fit benchmarks in Appendix A, and the analysis of hopping ratios that connect to pairing-symmetry discussions in the literature. The predictions are falsifiable by ARPES on strained thin films, and the Note added (ref. 61) provides independent support for the tensile-strain trend in the bilayer. The main weakness is the reliance for n = 4 and n = 5 on tetragonal I4/mmm starting structures that have not been experimentally resolved; the paper itself acknowledges this, but the 'up to n = 5' claim is conditional on that assumption.

major comments (1)
  1. [Sec. III C and Fig. 5] The claim that tensile strain recovers the pure-d_{z^2} gamma pocket 'up to n = 5' rests on the tetragonal I4/mmm ambient-pressure structures from ref. 29, which have not been experimentally resolved. The paper justifies this by noting that for n = 2 and n = 3 the tetragonalized phases give electronic structures close to those of the orthorhombic/monoclinic cells, but this analogy is not demonstrated for n = 4 and n = 5. Since the appearance of the gamma pocket is a Fermi-surface topology change that is sensitive to octahedral rotations and small interlayer hoppings, a tilted ground state for n = 4 or n = 5 could place the d_{z^2} bonding band at a different energy relative to E_F and modify its strain response. I recommend either (a) performing additional calculations for n = 4 and n = 5 starting from tilted (e.g., Bmab-like) structures to test the robustness of the gamma-pocket recovery, or (b) explicitly softening the 'up to n = 5' wording to 'for the assumed ideal tetragonal structures' and stating this conditional in the abstract and conclusions.
minor comments (5)
  1. [Title and Abstract] The title contains a grammatical error: 'Strain to mimic the effects pressure' should read 'Strain to mimic the effects of pressure'. The same phrase appears in the first line of the abstract.
  2. [Sec. III A] In the second paragraph, the sentence 'the straightening of the Ni-O-Ni bond angle along the c-axis under pressure described above is likely related to the emergence of superconductivity in due to the associated enhancement' contains a typo ('in due' should likely be 'due').
  3. [Sec. II] There are minor spacing/LaTeX artifacts in the text, e.g., 'V ASP' should be 'VASP' and 'the Hellman-Feynman force' should be 'the Hellmann-Feynman force'.
  4. [Fig. 1 caption] The space group notation is inconsistent: 'F mmm' appears with a space in several places (e.g., Fig. 1 caption, Sec. III A text); it should be 'Fmmm' for consistency with the rest of the paper.
  5. [Sec. III B and Fig. 4] The notation for the Fermi-surface sheets (α, β1, β2, γ, δ) is introduced in the text and used in figures, but the δ pocket is not explicitly described in the text for the trilayer case; a brief description would improve readability.

Circularity Check

0 steps flagged · score 0.0 of 10

No circularity: the strain study is a self-contained DFT calculation benchmarked against external pressure results, and the unverified n=4-5 starting structures are an explicit assumption, not a fitted prediction.

full rationale

The paper's derivation chain is a direct first-principles study: structurally relax RP nickelates under biaxial strain, compute band structures and Fermi surfaces, and extract Wannier hoppings. No parameter is fitted to the target gamma-pocket feature or to the pressure data; the comparison with pressure is an external benchmark taken from previous calculations (including the authors' own) and from experiment. The use of tetragonal I4/mmm structures for n=4 and n=5, taken from ref. 29, is an explicitly stated assumption about as-yet-unresolved ambient-pressure structures, not a definitional identity with the strain conclusions; the same strain trends are obtained for n=2 and n=3 using experimentally resolved orthorhombic/monoclinic structures, and the appended note cites an independent external calculation supporting the tensile-strain trend in the bilayer. Thus there is no step in which a prediction reduces by construction to an input, and no load-bearing self-citation chain that smuggles in the target result.

Assumptions & free parameters 1 free parameters · 4 assumptions · 0 invented entities

No free parameters are fitted to data; the only input control is the strain level. The calculations rest on standard DFT assumptions (PBE, non-magnetic) and on structural starting points for n=4,5 that are not experimentally confirmed. The link between the d_z2 gamma pocket and superconductivity is taken from prior literature and is explicitly flagged as an open question.

free parameters (1)
  • Biaxial strain percentage (epsilon) = Swept from -3% to +3% in 1% steps for n=2; +-3% for n=3,4,5
    Chosen to represent experimentally attainable epitaxial strains on substrates like YAlO3 and DyScO3; not fitted to any target property, but a hand-chosen control parameter.
assumptions (4)
  • domain assumption PBE-GGA exchange-correlation functional provides a reliable description of the low-energy electronic structure of RP nickelates.
    Invoked in Section II for both VASP and WIEN2K calculations; no beyond-DFT corrections are applied.
  • domain assumption Non-magnetic calculations are sufficient to capture the electronic structure trends relevant to the pressure-induced superconducting state.
    Section II states 'Only non-magnetic calculations were performed for all RPs analyzed here.' Magnetic ordering could shift bands.
  • domain assumption The tetragonal I4/mmm structures used for n=4,5 are representative of the actual ambient-pressure phases.
    Section III C notes these structures have not been experimentally resolved and are taken from prior work (ref 29).
  • domain assumption The pure d_z2 gamma pocket at the Fermi level is the electronic structure feature associated with superconductivity under pressure.
    Section III A invokes prior theoretical studies (refs 33,34,39-42) that associate the gamma pocket with s± pairing; the paper does not re-derive this link.

how reviews work

0 comments
Cite this review

Pith. "Pith review of Electronic structure of Ruddlesden-Popper nickelates: strain to mimic the effects pressure." pith.science (2026). https://pith.science/paper/2IPTUEBG

@misc{pith2026241204391,
  author       = {Pith},
  title        = {Pith review of: Electronic structure of Ruddlesden-Popper nickelates: strain to mimic the effects pressure},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/2IPTUEBG}},
  note         = {Machine review of arXiv:2412.04391}
}
abstract

Signatures of superconductivity under pressure have recently been reported in the bilayer La$_3$Ni$_2$O$_7$ and trilayer La$_4$Ni$_3$O$_{10}$ Ruddlesden-Popper (RP) nickelates with general chemical formula La$_{n+1}$Ni$_n$O$_{3n+1}$ ($n=$ number of perovskite layers along the $c$-axis). The emergence of superconductivity is always concomitant with a structural transition in which the octahedral tilts are suppressed, bringing the apical Ni-O-Ni angle to 180$^\circ$ and causing an increase in the out-of-plane $d_{z^2}$ orbital overlap. Due to this strong interlayer coupling, a flat band of pure $d_{z^2}$ character crosses the Fermi level. Here, using first-principles calculations, we explore biaxial strain (both compressive and tensile) as a means to mimic the electronic structure characteristics of RP nickelates (up to $n=5$) under hydrostatic pressure. Our findings highlight that strain allows to decouple the structural and electronic structure effects obtained under hydrostatic pressure: while compressive strain brings the apical Ni-O-Ni angle closer to 180$^\circ$, it shifts the $d_{z^2}$ flat bands away from the Fermi energy, giving rise to a more cuprate-like electronic structure. In contrast, tensile strain reduces the apical Ni-O-Ni angle (to values $\sim$ 160$^\circ$), but it recovers the flat $d_{z^2}$ band at the Fermi level appearing in the bilayer and trilayer RPs under pressure. Overall, strain represents a promising way to tune the electronic structure of RP nickelates and could be an alternative route to achieve superconductivity at ambient pressure in this family of materials.

Figures

Figures reproduced from arXiv: 2412.04391 by the authors.

Figure 2
Figure 2. FIG. 2. Band structure and Fermi surface of La [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗
Figure 3
Figure 3. FIG. 3. Relevant hopping ratios as a function of strain for [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗
Figure 4
Figure 4. FIG. 4. Band structure and Fermi surface of La [PITH_FULL_IMAGE:figures/full_fig_p005_4.png] view at source ↗
Figures from the paper (6 more)
Figure 5
Figure 5. Figure 5: FIG. 5. Band structure and Fermi surface of (a) La [PITH_FULL_IMAGE:figures/full_fig_p006_5.png]
Figure 6
Figure 6. Figure 6: FIG. 6. DFT band structures (black solid lines) and Ni- [PITH_FULL_IMAGE:figures/full_fig_p007_6.png]
Figure 7
Figure 7. Figure 7: FIG. 7. Band structure of La [PITH_FULL_IMAGE:figures/full_fig_p008_7.png]
Figure 8
Figure 8. Figure 8: FIG. 8. Orbital-resolved densities of states for Ni and O atoms in La [PITH_FULL_IMAGE:figures/full_fig_p009_8.png]
Figure 9
Figure 9. Figure 9: FIG. 9. Band structure and Fermi surface of La [PITH_FULL_IMAGE:figures/full_fig_p010_9.png]
Figure 10
Figure 10. Figure 10: FIG. 10. Evolution of the dominant hopping ratios for (a) La [PITH_FULL_IMAGE:figures/full_fig_p010_10.png]

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 4 Pith papers

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

  1. Resolving Structural Origins for Superconductivity in Strain-Engineered La$_3$Ni$_2$O$_7$ Thin Films

    cond-mat.supr-con 2025-01 conditional novelty 7.0 of 10

    Direct atomic imaging of strained La3Ni2O7 films shows compressive strain lifts oxygen octahedral symmetry and that in-plane, rather than c-axis, lattice matching tracks superconductivity.

  2. Strain-tuning for superconductivity in La$_3$Ni$_2$O$_7$ thin films

    cond-mat.supr-con 2025-06 conditional novelty 6.0 of 10

    Substrate strain tunes the onset superconducting temperature of La3Ni2O7 films at 20 GPa from about 10 K to 60 K, with higher c/a giving higher Tc.

  3. Superconductivity and normal-state transport in compressively strained La$_2$PrNi$_2$O$_7$ thin films

    cond-mat.supr-con 2025-01 conditional novelty 6.0 of 10

    Compressively strained La2PrNi2O7 thin films show ambient-pressure superconductivity with onset above 48 K, zero resistance above 30 K, and cuprate-like normal-state transport.

  4. Structural and Electronic Evolution of Bilayer Nickelates Under Biaxial Strain

    cond-mat.supr-con 2025-02 conditional novelty 5.0 of 10

    Compressive strain in bilayer nickelates pushes the Ni dz2 bands away from the Fermi level and widens the orbital energy gap by about 50%, suggesting dz2 at the Fermi level is not essential for superconductivity.

Reference graph

Works this paper leans on

61 extracted references · 36 canonical work pages · cited by 4 Pith papers

  1. [1]

    D. Li, K. Lee, B. Y. Wang, M. Osada, S. Crossley, H. R. Lee, Y. Cui, Y. Hikita, and H. Y. Hwang, Supercon- ductivity in an infinite-layer nickelate, Nature 572, 624 (2019)

    2019

  2. [2]

    Osada, B

    M. Osada, B. Y. Wang, B. H. Goodge, K. Lee, H. Yoon, K. Sakuma, D. Li, M. Miura, L. F. Kourkoutis, and H. Y. Hwang, A superconducting praseodymium nickelate with infinite layer structure, Nano Lett. 20, 5735 (2020)

    work page 2020

  3. [3]

    Osada, B

    M. Osada, B. Y. Wang, K. Lee, D. Li, and H. Y. Hwang, Phase diagram of infinite layer praseodymium nickelate Pr1−xSrxNiO2 thin films, Phys. Rev. Mater. 4, 121801 (2020)

    work page 2020

  4. [4]

    Osada, B

    M. Osada, B. Y. Wang, B. H. Goodge, S. P. Harvey, K. Lee, D. Li, L. F. Kourkoutis, and H. Y. Hwang, Nick- elate superconductivity without rare-earth magnetism: (La,Sr)NiO2, Adv. Mater. 33, 2104083 (2021)

    work page 2021

  5. [5]

    S. Zeng, C. Li, L. E. Chow, Y. Cao, Z. Zhang, C. S. Tang, X. Yin, Z. S. Lim, J. Hu, P. Yang, et al., Superconduc- tivity in infinite-layer nickelate La1−xCaxNiO2 thin films, Sci. Adv. 8, eabl9927 (2022)

    work page 2022

  6. [6]

    D. Li, B. Y. Wang, K. Lee, S. P. Harvey, M. Osada, B. H. Goodge, L. F. Kourkoutis, and H. Y. Hwang, Supercon- ducting dome in Nd1−xSrxNiO2 infinite layer films, Phys. Rev. Lett. 125, 027001 (2020)

    2020

  7. [7]

    G. A. Pan, D. Ferenc Segedin, H. LaBollita, Q. Song, E. M. Nica, B. H. Goodge, A. T. Pierce, S. Doyle, S. No- vakov, D. C´ ordova Carrizales,et al., Superconductivity in a quintuple-layer square-planar nickelate, Nat. Mater. 21, 160 (2022)

    work page 2022

  8. [8]

    Lacorre, Passage from T-type to T’-type arrangement by reducing R 4Ni3O10 to R4Ni3O8 (R = La, Pr, Nd), J

    P. Lacorre, Passage from T-type to T’-type arrangement by reducing R 4Ni3O10 to R4Ni3O8 (R = La, Pr, Nd), J. Solid State Chem. 97, 495 (1992)

    work page 1992

Show all 61 references
  1. [9]

    V. V. Poltavets, K. A. Lokshin, M. Croft, T. K. Man- dal, T. Egami, and M. Greenblatt, Crystal structures of Ln4Ni3O8 (Ln = La, Nd) triple layer T’-type nickelates, Inorg. Chem. 46, 10887 (2007)

    2007

  2. [10]

    V. V. Poltavets, K. A. Lokshin, S. Dikmen, M. Croft, T. Egami, and M. Greenblatt, La 3Ni2O6: A new double T’-type nickelate with infinite Ni 1+/2+O2 layers, J. Am. Chem. Soc. 128, 9050 (2006)

    2006

  3. [11]

    LaBollita and A

    H. LaBollita and A. S. Botana, Electronic structure and magnetic properties of higher-order layered nickelates: Lan+1NinO2n+2 (n = 4-6), Phys. Rev. B 104, 035148 (2021)

    2021

  4. [12]

    Kitatani, L

    M. Kitatani, L. Si, O. Janson, R. Arita, Z. Zhong, and K. Held, Nickelate superconductors−a renaissance of the one-band hubbard model, npj Quantum Mater. 5, 59 (2020)

    2020

  5. [13]

    A. S. Botana and M. R. Norman, Similarities and differ- ences between LaNiO2 and CaCuO2 and implications for superconductivity, Phys. Rev. X 10, 011024 (2020)

    2020

  6. [14]

    Sakakibara, H

    H. Sakakibara, H. Usui, K. Suzuki, T. Kotani, H. Aoki, and K. Kuroki, Model construction and a possibility of cupratelike pairing in a new d9 nickelate superconductor (Nd,Sr)NiO2, Phys. Rev. Lett. 125, 077003 (2020)

    2020

  7. [15]

    P. Worm, L. Si, M. Kitatani, R. Arita, J. M. Tomczak, and K. Held, Correlations tune the electronic structure of pentalayer nickelates into the superconducting regime, Phys. Rev. Mater. 6, L091801 (2022)

    2022

  8. [16]

    J. Karp, A. S. Botana, M. R. Norman, H. Park, M. Zingl, and A. Millis, Many-body electronic structure of NdNiO2 and CaCuO2, Phys. Rev. X 10, 021061 (2020)

    2020

  9. [17]

    J. Karp, A. Hampel, M. Zingl, A. S. Botana, H. Park, M. R. Norman, and A. J. Millis, Comparative many- body study of Pr4Ni3O8 and NdNiO2, Phys. Rev. B 102, 245130 (2020)

    2020

  10. [18]

    X. Wu, D. Di Sante, T. Schwemmer, W. Hanke, H. Y. Hwang, S. Raghu, and R. Thomale, Robust dx2−y2 -wave superconductivity of infinite-layer nickelates, Phys. Rev. B 101, 060504 (2020)

    2020

  11. [19]

    Kitatani, L

    M. Kitatani, L. Si, P. Worm, J. M. Tomczak, R. Arita, and K. Held, Optimizing superconductivity: From cuprates via nickelates to palladates, Phys. Rev. Lett. 130, 166002 (2023)

    2023

  12. [20]

    Cheng, D

    B. Cheng, D. Cheng, K. Lee, L. Luo, Z. Chen, Y. Lee, B. Y. Wang, M. Mootz, I. E. Perakis, Z.-X. Shen, et al., Evidence for d-wave superconductivity of infinite-layer nickelates from low-energy electrodynamics, Nat. Mater. 23, 775 (2024)

    2024

  13. [21]

    B.-X. Wang, H. Zheng, E. Krivyakina, O. Chmaissem, P. P. Lopes, J. W. Lynn, L. C. Gallington, Y. Ren, S. Rosenkranz, J. F. Mitchell, and D. Phelan, Syn- thesis and characterization of bulk Nd 1−xSrxNiO2 and Nd1−xSrxNiO3, Phys. Rev. Mater. 4, 084409 (2020)

    2020

  14. [22]

    Q. Li, C. He, J. Si, X. Zhu, Y. Zhang, and H.-H. Wen, Ab- sence of superconductivity in bulk Nd 1−xSrxNiO2, Com- mun. Mater. 1, 16 (2020)

    2020

  15. [23]

    H. Sun, M. Huo, X. Hu, J. Li, Z. Liu, Y. Han, L. Tang, Z. Mao, P. Yang, B. Wang,et al., Signatures of supercon- ductivity near 80 K in a nickelate under high pressure, Nature 621, 493 (2023)

    2023

  16. [24]

    N. Wang, G. Wang, X. Shen, J. Hou, J. Luo, X. Ma, H. Yang, L. Shi, J. Dou, J. Feng, et al., Bulk high- temperature superconductivity in pressurized tetragonal La2PrNi2O7, Nature 634, 579 (2024)

    2024

  17. [25]

    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, ...

    2023

  18. [26]

    Y. Zhu, D. Peng, E. Zhang, B. Pan, X. Chen, L. Chen, H. Ren, F. Liu, Y. Hao, N. Li,et al., Superconductivity in pressurized trilayer La 4Ni3O10−δ single crystals, Nature 631, 531 (2024)

    2024

  19. [27]

    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)

    2024

  20. [28]

    Greenblatt, Ruddlesden-Popper Ln n+1NinO3n+1 nickelates: structure and properties, Curr

    M. Greenblatt, Ruddlesden-Popper Ln n+1NinO3n+1 nickelates: structure and properties, Curr. Opin. Solid State Mater. Sci. 2, 174 (1997)

    1997

  21. [29]

    M.-C. Jung, J. Kapeghian, C. Hanson, B. Pamuk, and A. S. Botana, Electronic structure of higher-order Ruddlesden-Popper nickelates, Phys. Rev. B105, 085150 (2022)

    2022

  22. [30]

    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)

    2023

  23. [31]

    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 12 108, L180510 (2023)

    2023

  24. [32]

    Q.-G. Yang, D. Wang, and Q.-H. Wang, Possible s±- wave superconductivity in La3Ni2O7, Phys. Rev. B 108, L140505 (2023)

    2023

  25. [33]

    Yang, K.-Y

    Q.-G. Yang, K.-Y. Jiang, D. Wang, H.-Y. Lu, and Q.-H. Wang, Effective model and s±-wave superconductivity in trilayer nickelate La4Ni3O10, Phys. Rev. B 109, L220506 (2024)

    2024

  26. [34]

    Zhang, H

    M. Zhang, H. Sun, Y.-B. Liu, Q. Liu, W.-Q. Chen, and F. Yang, s±-wave superconductivity in pressurized La4Ni3O10, Phys. Rev. B 110, L180501 (2024)

    2024

  27. [35]

    Sakakibara, N

    H. Sakakibara, N. Kitamine, M. Ochi, and K. Kuroki, 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)

    2024

  28. [36]

    Christiansson, F

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

    2023

  29. [37]

    LaBollita, V

    H. LaBollita, V. Pardo, M. R. Norman, and A. S. Botana, Electronic structure and magnetic properties of La3Ni2O7 under pressure: active role of the Ni- dx2−y2 orbitals, arXiv:2309.17279 (2023)

    2023 arXiv

  30. [38]

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

    2024

  31. [39]

    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. B 108, L201121 (2023)

    2023

  32. [40]

    Zhang, L.-F

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

    2024

  33. [41]

    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)

    2024

  34. [42]

    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

  35. [43]

    Y. Zhou, J. Guo, S. Cai, H. Sun, C. Li, J. Zhao, P. Wang, J. Han, X. Chen, Y. Chen, Q. Wu, Y. Ding, T. Xiang, H.- k. Mao, and L. Sun, Investigations of key issues on the re- producibility of high-tc superconductivity emerging from compressed la3ni2o7, Matter and Radiation at E...

    2025 doi

  36. [44]

    Z. Li, W. Guo, T. Zhang, J. Song, T. Gao, Z. Gu, and Y. Nie, Epitaxial growth and electronic structure of Ruddlesden-Popper nickelates (La n+1NinO3n+1, n = 1-5), APL Mater. 8, 091112 (2020)

    2020

  37. [45]

    W. Sun, Y. Li, X. Cai, J. Yang, W. Guo, Z. Gu, Y. Zhu, and Y. Nie, Electronic and transport prop- erties in Ruddlesden-Popper neodymium nickelates Ndn+1NinO3n+1 (n = 1-5), Phys. Rev. B 104, 184518 (2021)

    2021

  38. [46]

    G. A. Pan, Q. Song, D. Ferenc Segedin, M.-C. Jung, H. El-Sherif, E. E. Fleck, B. H. Goodge, S. Doyle, D. C´ ordova Carrizales, A. T. N’Diaye, et al., Syn- thesis and electronic properties of Nd n+1NinO3n+1 Ruddlesden-Popper nickelate thin films, Phys. Rev. Mater. 6, 055003 (2022)

    2022

  39. [47]

    Zhang, H

    J. Zhang, H. Zheng, Y.-S. Chen, Y. Ren, M. Yonemura, A. Huq, and J. F. Mitchell, High oxygen pressure floating zone growth and crystal structure of the metallic nick- elates R4Ni3O10 (R = La, Pr), Phys. Rev. Mater. 4, 083402 (2020)

    2020

  40. [48]

    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. B 109, 195151 (2024)

    2024

  41. [49]

    Kresse and J

    G. Kresse and J. Hafner, Ab initio molecular dynamics for liquid metals, Phys. Rev. B 47, 558 (1993)

    1993

  42. [50]

    Kresse and J

    G. Kresse and J. Furthm¨ uller, Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set, Phys. Rev. B 54, 11169 (1996)

    1996

  43. [51]

    P. E. Bl¨ ochl, Projector augmented-wave method, Phys. Rev. B 50, 17953 (1994)

    1994

  44. [52]

    J. P. Perdew, K. Burke, and M. Ernzerhof, Generalized gradient approximation made simple, Phys. Rev. Lett. 77, 3865 (1996)

    1996

  45. [53]

    Blaha, K

    P. Blaha, K. Schwarz, F. Tran, R. Laskowski, G. K. H. Madsen, and L. D. Marks, WIEN2k: An APW+lo pro- gram for calculating the properties of solids, J. Chem. Phys. 152, 074101 (2020)

    2020

  46. [54]

    Kuneˇ s, R

    J. Kuneˇ s, R. Arita, P. Wissgott, A. Toschi, H. Ikeda, and K. Held, Wien2wannier: From linearized augmented plane waves to maximally localized wannier functions, Comput. Phys. Commun. 181, 1888 (2010)

    2010

  47. [55]

    Pizzi, V

    G. Pizzi, V. Vitale, R. Arita, S. Bl¨ ugel, F. Freimuth, G. G´ eranton, M. Gibertini, D. Gresch, C. Johnson, T. Koretsune, et al., Wannier90 as a community code: new features and applications, J. Phys.: Condens. Mat- ter. 32, 165902 (2020)

    2020

  48. [56]

    L. Wang, Y. Li, S.-Y. Xie, F. Liu, H. Sun, C. Huang, Y. Gao, T. Nakagawa, B. Fu, B. Dong, et al., Structure responsible for the superconducting state in La 3Ni2O7 at high-pressure and low-temperature conditions, J. Am. Chem. Soc. 146, 7506 (2024)

    2024

  49. [57]

    J. Yang, H. Sun, X. Hu, Y. Xie, T. Miao, H. Luo, H. Chen, B. Liang, W. Zhu, G. Qu, et al., Orbital- dependent electron correlation in double-layer nickelate La3Ni2O7, Nat. Commun. 15, 4373 (2024)

    2024

  50. [58]

    H. Liu, C. Xia, S. Zhou, and H. Chen, Role of crystal-field-splitting and longe-range-hoppings on superconducting pairing symmetry of La 3Ni2O7, arXiv:2311.07316 (2023)

    2023 arXiv

  51. [59]

    X. Chen, J. Zhang, A. S. Thind, S. Sharma, H. LaBollita, G. Peterson, H. Zheng, D. P. Phelan, A. S. Botana, R. F. Klie, et al., Polymorphism in the Ruddlesden-Popper nickelate La 3Ni2O7: Discovery of a hidden phase with distinctive layer stacking, J. Am. Chem. Soc. 146, 3640 (2024)

    2024

  52. [60]

    H. Wang, L. Chen, A. Rutherford, H. Zhou, and W. Xie, Long-range structural order in a hidden phase of Ruddlesden–Popper bilayer nickelate La3Ni2O7, Inorg. Chem. 63, 5020 (2024)

    2024

  53. [61]

    Geisler, J

    B. Geisler, J. J. Hamlin, G. R. Stewart, R. G. Hen- nig, and P. J. Hirschfeld, Fermi surface reconstruction in strained La 3Ni2O7 on LaAlO3(001) and SrTiO 3(001), arXiv: 2411.14600 (2024)

    2024

Pith tools

Reviewed August 11, 2026 · model on record in the stance chip above.