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Correlation Enhanced Electron-Phonon Coupling in FeSe/SrTiO$_3$ at a Magic Angle

T0 review · 4 major / 3 minor · reviewed 2026-08-06 · deepseek-v4-flash

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Pith's one-line read This paper argues that the high superconducting temperature of single-layer FeSe on SrTiO3 comes from electron correlations amplifying an in-film A1g phonon mode, not just from interface coupling.

desk verdict The paper has strong experiment and eDMFT spectra, but the central D-dome rests on a free-standing layer and pocket selection that could manufacture the claimed 'magic angle'. read the letter →

arxiv 2506.22435 v1 pith:PHXK2MFS submitted 2025-06-27 cond-mat.str-el

Qiang Zou , Antik Sihi , Basu Dev Oli , Mercè Roig , Daniel Agterberg , Michael Weinert , Lian Li , Subhasish Mandal This is my paper
classification cond-mat.str-el
keywords electron-phononcouplingFeSe/SrTiO3dynamicalmeanfieldtheorysuperconductingdometetrahedralbondangleA1gphononHund'smetalmonolayerironchalcogenides
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

This paper tries to settle what raises the superconducting transition of single-layer FeSe on SrTiO3 so far above bulk FeSe. Using calculations that treat electrons as correlated (eDMFT) together with films grown by molecular-beam epitaxy and probed by scanning tunneling microscopy and angle-resolved photoemission, the authors argue the key factor is not only the interface but a strong enhancement of the electron-phonon coupling of the A1g breathing mode inside the FeSe layer itself, driven by electronic correlations. They find a superconducting dome as a function of the X-Fe-X tetrahedral angle, peaking near 107 degrees, and the computed A1g deformation potential follows the same dome. If correct, this would show that atomic-scale geometry can be used to tune pairing in correlated superconductors, and that phonons and correlations cooperate rather than compete.

What carries the argument

The load-bearing object is the deformation potential D of the A1g phonon mode, defined as the shift of electronic energy per unit ionic displacement; the electron-phonon coupling is proportional to $D^2$. The authors compute D with eDMFT for the free-standing FeX layer, aligning its X-Fe-X angle to the optimized heterostructure angle, and evaluate it on the experimental Fermi surface: electron pockets at the Brillouin-zone corner for FeSe/STO, hole pockets near the zone center for FeTe/STO. The A1g mode, a zero-momentum breathing mode of the FeX4 tetrahedron, mediates forward small-momentum scattering that can enhance pairing in both the $s$-wave and nodeless $d$-wave channels. The dome in D and its absence in DFT are what carry the argument that correlations, not single-particle physics, generate the enhancement.

What would settle it

A direct measurement of the A1g phonon coupling across the alloy series, for example by ultrafast electron-phonon lock-in experiments combining time-resolved photoemission and time-resolved X-ray diffraction, should find the deformation potential peaking near the 107-degree FeSe/2TiO2 point and dropping on both the S-rich and Te-rich sides; a flat or monotonic D versus angle would falsify the claim. Likewise, a full heterostructure eDMFT calculation that explicitly includes the substrate and yields a strongly suppressed or shifted dome would call the free-standing-layer approximation into question.

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Extended reading notes

Core claim

The central claim is that in single-layer FeX/STO, correlation-enhanced electron-phonon coupling within the FeSe film, specifically for the A1g mode, is the dominant driver of the enhanced superconductivity at the magic tetrahedral angle of about 107 degrees. The paper's eDMFT-computed deformation potential D for the A1g mode, evaluated on the experimental Fermi surface, shows a dome versus the X-Fe-X angle that matches the measured superconducting gap dome across FeSexTe1-x and FeSeyS1-y alloys and substrate terminations. The enhancement is large: at optimal 2-TiO2 FeSe/STO, the eDMFT A1g electron-phonon coupling is about 6 times the bulk value and about 7 times the DFT value, yielding an Allen-Dynes $T_c$ estimate of roughly 24 to 33 K, which the authors combine with interfacial electron-phonon coupling or with a uniform enhancement of all phonon modes to explain the observed high $T_c$. In contrast, standard DFT gives no dome in D, locating the mechanism in many-body correlations.

Load-bearing premise

The calculation assumes that omitting the SrTiO3 substrate atoms when computing the A1g deformation potential does not materially change the coupling, as long as the tetrahedral angle and doping level are matched to the full heterostructure.

Editorial extensions

If this is right

  • The superconducting gap in single-layer FeX/STO is controlled by the tetrahedral bond angle, with a maximum near 107 degrees at FeSe on 2-TiO2-terminated SrTiO3.
  • Electronic correlations and the A1g electron-phonon coupling rise and fall together across the alloy series, so S alloying suppresses both while Te alloying increases correlations but changes the Fermi surface in a way that reduces the gap.
  • The A1g deformation potential dome from eDMFT, but not from DFT, implies that any quantitative theory of FeSe/STO superconductivity must include many-body correlations rather than treating the lattice coupling at the single-particle level.
  • The estimated Allen-Dynes $T_c$ of 24 to 33 K from the A1g mode alone, when added to interfacial phonon contributions, can account for the experimental $T_c$, making the in-film mode a necessary part of the pairing mechanism.

Reading between the lines

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

  • If the free-standing-layer approximation survives a full heterostructure calculation, the same geometry-correlation-electron-phonon link should be sought in other interface superconductors, such as nickelate films, where local bond angles are also tunable by epitaxial strain and termination.
  • The dome in D implies the isotope-effect coefficient for the A1g mode should be non-monotonic across the alloy series, peaking near FeSe/2TiO2, which could be tested by chalcogen isotope substitution.
  • The FeSe0.5S0.5 outlier, attributed to suppression of the A1g mode in the S-alloyed bulk, suggests that mode softening, not just the bond angle, controls the coupling; tracking the A1g frequency across the full alloy series may sharpen or shift the predicted dome.
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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

4 major / 3 minor

Summary. The manuscript combines molecular-beam epitaxy growth, STM/STS and ARPES measurements, and first-principles eDMFT calculations to study single-layer FeX (X = Se, S, Te) and alloy films on SrTiO3(001). The experimental superconducting gap Δ is reported as a dome in the average X–Fe–X tetrahedral bond angle, peaking near 107° for FeSe on the TiO2-terminated substrate. The eDMFT-computed A1g deformation potential D, evaluated on the experimentally observed Fermi-surface pockets, is claimed to show a similar dome, whereas DFT does not. The authors conclude that correlation-enhanced electron-phonon coupling inside the FeSe film, rather than interfacial EPC alone, is the key factor driving the enhanced superconductivity in FeSe/STO. The paper also reports orbital-resolved mass enhancements, a comparison of eDMFT spectral functions with ARPES across the alloy series, and an Allen-Dynes estimate of Tc from the enhanced A1g coupling.

Significance. If the central claim is correct, the paper would establish a concrete microscopic mechanism for the long-standing FeSe/STO Tc puzzle: strong correlations enhance the intra-film A1g EPC, and this enhancement is tunable by the tetrahedral bond angle. The work is genuinely interdisciplinary, combining controlled epitaxial growth, spectroscopy, and correlated-electron calculations. Notable strengths are that the D values are computed rather than fitted to the experimental gap, that the eDMFT spectral functions reproduce the measured pocket evolution across the alloy series, and that the structural optimization includes forces within the eDMFT framework. The main risk is that the central quantity, the A1g deformation potential, is computed for a free-standing X–Fe–X layer whose electronic structure differs from the physical heterostructure, and the plotted D is selected post hoc from either electron or hole pockets. These approximations are load-bearing for the dome and therefore for the main conclusion, so the paper needs additional validation before the claim can be accepted.

major comments (4)
  1. [Fig. 4(c) and text near 'We aligned the equilibrium X–Fe–X angle'] The deformation potential D for the A1g mode is computed for a free-standing X–Fe–X layer with the bond angle matched to the eDMFT-optimized heterostructure, but without the STO substrate. The paper states that this relies on the assumption that substrate effects on the A1g EPC are minimal. This assumption is load-bearing because the substrate is the source of the charge transfer that determines which pockets sit on the Fermi level in the real films, and it can also screen or renormalize the A1g coupling. In the free-standing calculation both electron and hole bands are present, so the computed D is not evaluated on the experimental Fermi surface. I would need to see at least one explicit heterostructure calculation, or a controlled doping/screening model, demonstrating that the A1g D for the experimental pocket is not materially changed by the substrate; without that, the calculated D dome could be an artifact of the free-standing approximation.
  2. [Fig. 4(c) and pocket-selection paragraph] The main-text D is selected post hoc from either the electron-pocket average or the hole-pocket average 'depending on the FS features observed in ARPES.' Since the selection switches from hole pockets for FeTe/STO to electron pockets for FeSe/STO and S-doped films, a dome in the plotted composite can be produced by stitching together two monotonic segments even if neither individual pocket's D is dome-shaped. The manuscript should present the pocket-resolved D(angle) curves for all compositions in a way that directly rules out this stitching artifact, and it should justify why a particular pocket choice is valid in the intermediate alloy region where both pockets may be present.
  3. [DFT versus eDMFT comparison, Supplementary Fig. 12] The text states that eDMFT-optimized X–Fe–X angles differ significantly from standard DFT angles, and then compares D computed with eDMFT versus DFT to conclude that correlations are responsible for the dome. If the two methods are evaluated at different optimized geometries, the comparison conflates correlation effects with structural differences. To support the claim that the dome originates from many-body interactions, the DFT D should also be evaluated at the eDMFT-optimized angles, or at a common set of structures, so that the only changing variable is the treatment of correlations.
  4. [Fig. 4(a), Vegard's-law angle estimates] For several alloy compositions the X–Fe–X angles are estimated using Vegard's law rather than direct eDMFT optimization. The dome shape and peak position in Fig. 4(a) depend on the horizontal placement of these estimated points, especially near the Te- and S-rich ends. The manuscript should quantify the uncertainty in these angles (for example, from the spread of measured angles or from DFT-level estimates) and show that the dome and the 107° peak survive within those uncertainties.
minor comments (3)
  1. [Fig. 2 and Fig. 4(a)] The superconducting gap Δ at low temperature is used as a proxy for Tc throughout the dome comparison; because gap magnitude and Tc are related through the coupling strength and gap symmetry, a sentence noting the limits of this proxy would help the reader assess the quantitative dome.
  2. [Main text, FeSe0.5S0.5 outlier discussion] The outlier is rationalized by bulk FeSe1−xSx phonon data showing the A1g mode vanishing at x = 0.23 and re-emerging at x = 0.69; however, the monolayer composition x = 0.5 lies between those values and no phonon measurement is presented for this film, so the explanation is suggestive rather than a direct validation.
  3. [Allen-Dynes estimate in Conclusions] The Tc estimate of roughly 24 (33) K depends on the chosen phonon frequency and on the Coulomb pseudopotential μ*, and the alternative statement that 'if all phonon modes are uniformly enhanced ... EPC alone may be sufficient' is speculative; these should be explicitly labeled as estimates with stated parameter assumptions and sensitivity.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the A1g deformation-potential dome is an independent eDMFT calculation evaluated on the ARPES-determined Fermi surface, not a fit to the measured gap.

full rationale

The derivation chain is self-contained and does not reduce to its inputs. The measured superconducting gap Δ (STS) and the computed A1g deformation potential D (eDMFT) are independent quantities; D is calculated for free-standing X–Fe–X layers at eDMFT-optimized tetrahedral angles, with no parameter fitted to Δ. The 'magic angle' is defined by the experimental gap dome, and the D dome is then compared, not regressed, to it. The paper's explicit choice to use electron-pocket or hole-pocket D according to the ARPES-observed Fermi surface ('the value of D corresponding to the experimental FS ... is taken to be either the average D of the electron pockets or that of the hole pockets, depending on the FS features observed in ARPES') is an honest conditional evaluation on independent experimental data, not a fitted input renamed as a prediction. Self-citations (e.g., Refs. [12], [34], [40]) are backed by independent benchmarks: Ref. [13] (Gerber et al., Science 2017) experimentally confirms correlation-enhanced EPC in bulk FeSe, and Ref. [33] independently reports the picoscale bond angles. The stated approximations—omitting the STO substrate in the D computation and assuming its effect on A1g EPC is minimal—are explicit limitations that affect quantitative accuracy and robustness, but they do not make the central claim true by construction. No equation or definition in the paper makes the predicted D dome equivalent to the measured Δ dome.

Assumptions & free parameters 3 free parameters · 7 assumptions · 0 invented entities

The central claim rests on several modeling choices: the free-standing layer approximation for D, the pocket selection based on ARPES, Vegard's law for alloy angles, the 50% O-vacancy assumption, and the neglect of antiferromagnetism in FeTe. The Allen-Dynes Tc estimate requires an unstated Coulomb pseudopotential and uses an inconsistent phonon frequency. No invented entities are introduced.

free parameters (3)
  • Coulomb pseudopotential mu* in Allen-Dynes formula = not stated
    The Tc estimates of 24-33 K are obtained from the Allen-Dynes formula, which requires mu*; no value is given, so the estimate is not reproducible from the text.
  • Phonon frequency used in Allen-Dynes estimate = ~213 K (text), while computed A1g is 22.6 meV = 262 K
    The conclusion cites a phonon frequency of ~213 K, but the paper's computed A1g frequency for FeSe/2TiO2 is 22.6 meV (262 K). This inconsistency affects the quoted Tc range.
  • O-vacancy concentration in heterostructure models = 50%
    All eDMFT optimizations use 50% O-vacancy on TiO2-terminated STO; this modeling choice affects charge transfer, optimized angles, and hence the D values.
assumptions (7)
  • ad hoc to paper The A1g deformation potential computed for a free-standing FeX layer with the angle matched to the heterostructure is a faithful proxy for the EPC in the full FeX/STO heterostructure
    Explicitly stated in the paragraph before Fig 4c: 'based on the assumption that their effect on the EPC for the A1g mode on the experimental FS is minimal.' This is load-bearing for the D dome.
  • ad hoc to paper Substrate effects other than angle matching and doping are negligible for the A1g EPC
    Same paragraph; the substrate is omitted entirely from D calculations.
  • domain assumption Vegard's law linearly interpolates the X-Fe-X angle for alloy compositions without direct eDMFT optimization
    Used for some alloy points in Fig 4a and 4c; the paper notes direct optimization was not possible for large supercells.
  • domain assumption Antiferromagnetic ordering does not significantly affect the results for SL FeTe/STO
    Stated limitation: 'The effect of possible antiferromagnetic ordering in SL FeTe/STO is not considered here.' FeTe is the most correlated endpoint.
  • domain assumption eDMFT with 50% O-vacancy captures the relevant charge transfer and correlations
    All main calculations use 50% O-vacancy; no convergence study vs vacancy concentration is presented.
  • domain assumption The A1g mode's q=0 forward scattering can enhance pairing in s-wave and nodeless d-wave channels
    Conclusion cites refs 16,45-47; the SI provides details, but the enhancement mechanism is assumed.
  • standard math Allen-Dynes formula is applicable to this strongly correlated system
    Used to translate the eDMFT EPC into Tc estimates of 24-33 K.

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Cite this review

Pith. "Pith review of Correlation Enhanced Electron-Phonon Coupling in FeSe/SrTiO$_3$ at a Magic Angle." pith.science (2026). https://pith.science/paper/PHXK2MFS

@misc{pith2026250622435,
  author       = {Pith},
  title        = {Pith review of: Correlation Enhanced Electron-Phonon Coupling in FeSe/SrTiO$_3$ at a Magic Angle},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/PHXK2MFS}},
  note         = {Machine review of arXiv:2506.22435}
}
abstract

While a predictive theory for unconventional superconductivity in Fe-based superconductors remains elusive, an extensively debated aspect is the interaction between phonons and strongly correlated electrons, and its potential role in the pairing mechanism. Here, through the combination of first principles dynamical mean field theory calculations and epitaxial growth of the single-layer FeX (X=Se, S, Te) on SrTiO$_3$ (STO)(001) substrate, which facilitates the controlled distortion of the FeX$_4$ tetrahedron, we demonstrate an unique superconducting dome where the superconducting gap peaks at a `magic' angle of the FeX$_4$ tetrahedron and the electron-phonon coupling (EPC) for the A$_{1g}$ mode is maximized for the FeSe film. Our findings uncover a significant role of electronic correlations in strengthening Cooper pairing in unconventional superconductors by enhancing EPC.

Figures

Figures reproduced from arXiv: 2506.22435 by the authors.

Figure 2
Figure 2. FIG. 2. Summary of the superconducting gap for the single [PITH_FULL_IMAGE:figures/full_fig_p002_2.png] view at source ↗
Figure 1
Figure 1. FIG. 1. (a) Ball-and-stick model of the single-layer FeX/STO [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 3
Figure 3. FIG. 3. Comparison of spectral functions obtained from [PITH_FULL_IMAGE:figures/full_fig_p003_3.png] view at source ↗
Figures from the paper (2 more)
Figure 4
Figure 4. Figure 4: FIG. 4 [PITH_FULL_IMAGE:figures/full_fig_p004_4.png]
Figure 5
Figure 5. Figure 5: FIG. 5. Systematic comparison of spectral functions obtained from eDMFT computations [a, c(I–V)] and APRES [b, d(I–V)] [PITH_FULL_IMAGE:figures/full_fig_p008_5.png]

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Works this paper leans on

48 extracted references · 42 canonical work pages · cited by 1 Pith paper

  1. [1]

    J. Lee, K. Fujita, K. McElroy, J. A. Slezak, M. Wang, Y. Aiura, H. Bando, M. Ishikado, T. Masui, J. X. Zhu, A. V. Balatsky, H. Eisaki, S. Uchida, and J. C. Davis, Interplay of electron–lattice interactions and supercon- ductivity in bi2sr2cacu2o8+δ, Nature 442, 546 (2006)

    work page 2006

  2. [2]

    Krakauer, W

    H. Krakauer, W. E. Pickett, and R. E. Cohen, Large calculated electron-phonon interactions in la 2−x mx cuo4, Phys. Rev. B 47, 1002 (1993)

    work page 1993

  3. [3]

    T. P. Devereaux, T. Cuk, Z.-X. Shen, and N. Nagaosa, Anisotropic electron-phonon interaction in the cuprates, Phys. Rev. Lett. 93, 117004 (2004)

    work page 2004

  4. [4]

    Lanzara, P

    A. Lanzara, P. V. Bogdanov, X. J. Zhou, S. A. Kellar, D. L. Feng, E. D. Lu, T. Yoshida, H. Eisaki, A. Fujimori, K. Kishio, J. I. Shimoyama, T. Noda, S. Uchida, Z. Hus- sain, and Z. X. Shen, Evidence for ubiquitous strong electron–phonon coupling in high-temperature supercon- ductors, Nature 412, 510 (2001)

    work page 2001

  5. [5]

    Iwasawa, J

    H. Iwasawa, J. F. Douglas, K. Sato, T. Masui, Y. Yoshida, Z. Sun, H. Eisaki, H. Bando, A. Ino, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, S. Tajima, S. Uchida, T. Saitoh, D. S. Dessau, and Y. Aiura, Isotopic fingerprint of electron-phonon coupling in high-Tc cuprates, Phys. Rev. Lett. 101, 157005 (2008)

    work page 2008

  6. [6]

    Reznik, L

    D. Reznik, L. Pintschovius, M. Ito, S. Iikubo, M. Sato, H. Goka, M. Fujita, K. Yamada, G. D. Gu, and J. M. Tranquada, Electron–phonon coupling reflecting dynamic charge inhomogeneity in copper oxide supercon- 6 ductors, Nature 440, 1170 (2006)

    work page 2006

  7. [7]

    Braicovich, M

    L. Braicovich, M. Rossi, R. Fumagalli, Y. Peng, Y. Wang, R. Arpaia, D. Betto, G. M. De Luca, D. Di Castro, K. Kummer, M. Moretti Sala, M. Pagetti, G. Balestrino, N. B. Brookes, M. Salluzzo, S. Johnston, J. van den Brink, and G. Ghiringhelli, Determining the electron- phonon coupling in superconducting cuprates by reso- nant inelastic x-ray scattering: Met...

    work page 2020

  8. [8]

    Q. Wang, K. von Arx, M. Horio, D. J. Mukkat- tukavil, J. K¨ uspert, Y. Sassa, T. Schmitt, A. Nag, S. Pyon, T. Takayama, H. Takagi, M. Garcia-Fernandez, K.-J. Zhou, and J. Chang, Charge order lock-in by electron-phonon coupling in La1.675Eu0.2Sr 0.125CuO 4, Science Advances 7, eabg7394 (2021), https://www.science.org/doi/pdf/10.1126/sciadv.abg7394

    doi:10.1126/sciadv.abg7394 2021

Show all 48 references
  1. [9]

    Q. N. Meier, J. B. de Vaulx, F. Bernardini, A. S. Botana, X. Blase, V. Olevano, and A. Cano, Preempted phonon- mediated superconductivity in the infinite-layer nicke- lates, Phys. Rev. B 109, 184505 (2024)

    2024

  2. [10]

    Li and S

    Z. Li and S. G. Louie, Two-gap superconductivity and the decisive role of rare-earth d electrons in infinite-layer nickelates, Phys. Rev. Lett. 133, 126401 (2024)

    2024

  3. [11]

    J. Zhan, Y. Gu, X. Wu, and J. Hu, Cooperation between electron-phonon coupling and electronic interaction in bi- layer nickelates la 3ni2o7, Phys. Rev. Lett. 134, 136002 (2025)

    2025

  4. [12]

    Mandal, R

    S. Mandal, R. E. Cohen, and K. Haule, Strong pressure- dependent electron-phonon coupling in fese, Phys. Rev. B 89, 220502(R) (2014)

    2014

  5. [13]

    Gerber, S.-L

    S. Gerber, S.-L. Yang, D. Zhu, H. Soifer, J. A. Sob- ota, S. Rebec, J. J. Lee, T. Jia, B. Moritz, C. Jia, A. Gauthier, Y. Li, D. Leuenberger, Y. Zhang, L. Chaix, W. Li, H. Jang, J.-S. Lee, M. Yi, G. L. Dakovski, S. Song, J. M. Glownia, S. Nelson, K. W. Kim, Y.-D. Chuang, Z. Hu...

    2017

  6. [14]

    Ge, Z.-L

    J.-F. Ge, Z.-L. Liu, C. Liu, C.-L. Gao, D. Qian, Q.-K. Xue, Y. Liu, and J.-F. Jia, Superconductivity above 100 k in single-layer fese films on doped srtio3, Nature Mater. 14, 285 (2015)

    2015

  7. [15]

    Q. Song, T. L. Yu, X. Lou, B. P. Xie, H. C. Xu, C. H. P. Wen, Q. Yao, S. Y. Zhang, X. T. Zhu, J. D. Guo, R. Peng, and D. L. Feng, Evidence of cooperative effect on the enhanced superconducting transition temperature at the fese/srtio3 interface, Nature Communications 10, 758 (2019)

    2019

  8. [16]

    J. J. Lee, F. T. Schmitt, R. G. Moore, S. Johnston, Y. T. Cui, W. Li, M. Yi, Z. K. Liu, M. Hashimoto, Y. Zhang, D. H. Lu, T. P. Devereaux, D. H. Lee, and Z. X. Shen, In- terfacial mode coupling as the origin of the enhancement of tc in fese films on srtio3, Nature 515, 245 (2014)

    2014

  9. [17]

    H. Yang, Y. Zhou, G. Miao, J. Rusz, X. Yan, F. Guzman, X. Xu, X. Xu, T. Aoki, P. Zeiger, X. Zhu, W. Wang, J. Guo, R. Wu, and X. Pan, Phonon modes and electron– phonon coupling at the fese/srtio3 interface, Nature 635, 332 (2024)

    2024

  10. [18]

    S. Coh, M. L. Cohen, and S. G. Louie, Large elec- tron–phonon interactions from fese phonons in a mono- layer, New Journal of Physics 17, 073027 (2015)

    2015

  11. [19]

    K. W. Kim, A. Pashkin, H. Sch¨ afer, M. Beyer, M. Porer, T. Wolf, C. Bernhard, J. Demsar, R. Huber, and A. Leit- enstorfer, Ultrafast transient generation of spin-density- wave order in the normal state of bafe2as2 driven by coherent lattice vibrations, Nature Materials 11, 497 (2012)

    2012

  12. [20]

    Khanal and K

    G. Khanal and K. Haule, Correlation driven phonon anomalies in bulk fese, Phys. Rev. B 102, 241108 (2020)

    2020

  13. [21]

    Okabe, N

    H. Okabe, N. Takeshita, K. Horigane, T. Muranaka, and J. Akimitsu, Pressure-induced high- Tc superconducting phase in fese: Correlation between anion height and Tc, Phys. Rev. B 81, 205119 (2010)

    2010

  14. [22]

    Hosono, A

    H. Hosono, A. Yamamoto, H. Hiramatsu, and Y. Ma, Recent advances in iron-based superconductors toward applications, Materials Today 21, 278 (2018)

    2018

  15. [23]

    Keimer, S

    B. Keimer, S. A. Kivelson, M. R. Norman, S. Uchida, and J. Zaanen, From quantum matter to high-temperature superconductivity in copper oxides, Nature 518, 179 (2015)

    2015

  16. [24]

    R. M. Fernandes, A. V. Chubukov, and J. Schmalian, What drives nematic order in iron-based superconduc- tors?, Nature Physics 10, 97 (2014)

    2014

  17. [25]

    Shimojima, Y

    T. Shimojima, Y. Motoyui, T. Taniuchi, C. Bareille, S. Onari, H. Kontani, M. Nakajima, S. Kasa- hara, T. Shibauchi, Y. Matsuda, and S. Shin, Discovery of mesoscopic nematicity wave in iron- based superconductors, Science 373, 1122 (2021), https://www.science.org/doi/pdf/10.112...

    2021 doi

  18. [26]

    P. K. Nag, K. Scott, V. S. de Carvalho, J. K. Byland, X. Yang, M. Walker, A. G. Greenberg, P. Klavins, E. Mi- randa, A. Gozar, V. Taufour, R. M. Fernandes, and E. H. da Silva Neto, Highly anisotropic superconducting gap near the nematic quantum critical point of fese1-xsx, Na-...

    2025

  19. [27]

    R. Lou, O. Suvorov, H.-J. Grafe, A. Kuibarov, M. Krivenkov, O. Rader, B. B¨ uchner, S. Borisenko, and A. Fedorov, Suppression of nematicity by tensile strain in multilayer fese/srtio3 films, Physical Review Research 5, 043011 (2023)

    2023

  20. [28]

    M. Yang, C. Yan, Y. Ma, L. Li, and C. Cen, Light induced non-volatile switching of superconductivity in single layer fese on srtio3 substrate, Nature Communications 10, 85 (2019)

    2019

  21. [29]

    Q. Zou, B. D. Oli, H. Zhang, J. Benigno, X. Li, and L. Li, Deciphering alloy composition in superconducting single-layer fese1–xsx on srtio3(001) substrates by ma- chine learning of stm/s data, ACS Applied Materials & Interfaces 15, 22644 (2023)

    2023

  22. [30]

    B. D. Oli, Q. Zou, X. Li, and L. Li, Atomic-scale elec- tronic inhomogeneity in single-layer iron chalcogenide al- loys revealed by machine learning of stm/s data, AIP Advances 13, 105224 (2023)

    2023

  23. [31]

    Song, Y.-L

    C.-L. Song, Y.-L. Wang, P. Cheng, Y.-P. Jiang, W. Li, T. Zhang, Z. Li, K. He, L. Wang, J.-F. Jia, H.-H. Hung, C. Wu, X. Ma, X. Chen, and Q.-K. Xue, Direct observation of nodes and twofold symme- try in fese superconductor, Science 332, 1410 (2011), https://www.science.org/doi/...

    2011 doi

  24. [32]

    Haule and G

    K. Haule and G. L. Pascut, Forces for structural opti- mizations in correlated materials within a dft+embedded dmft functional approach, Phys. Rev. B 94, 195146 (2016)

    2016

  25. [33]

    R. Peng, K. Zou, M. G. Han, S. D. Albright, H. Hong, C. Lau, H. C. Xu, Y. Zhu, F. J. Walker, and C. H. Ahn, Picoscale structural insight into super- 7 conductivity of monolayer fese/srtio¡sub¿3¡/sub¿, Science Advances 6, eaay4517 (2020), https://www.science.org/doi/pdf/10.1126...

    2020 doi

  26. [34]

    Zou, G.-Y

    Q. Zou, G.-Y. Kim, J.-H. Kang, B. D. Oli, Z. Ge, M. Weinert, S. Mandal, C.-B. Eom, S.-Y. Choi, and L. Li, Unraveling enhanced superconductivity in single- layer fese through substrate surface terminations, (2025), arXiv:2502.16784 [cond-mat.supr-con]

    2025 arXiv

  27. [35]

    Haule and G

    K. Haule and G. Kotliar, Coherence-incoherence crossover in the normal state of iron oxypnictides and im- portance of hund’s rule coupling, New Journal of Physics 11, 025021 (2009)

    2009

  28. [36]

    Z. Yin, K. Haule, and G. Kotliar, Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides, Nature materials 10, 932 (2011)

    2011

  29. [37]

    Mandal, R

    S. Mandal, R. E. Cohen, and K. Haule, Pressure sup- pression of electron correlation in the collapsed tetrag- onal phase of cafe 2as2: A dft-dmft investigation, Phys. Rev. B 90, 060501 (2014)

    2014

  30. [38]

    Backes, H

    S. Backes, H. O. Jeschke, and R. Valent ´ ı, Microscopic nature of correlations in multi-orbital afe 2as2 (a=k, rb, cs): Hund’s coupling versus coulomb repulsion, Physical Review B 92, 195128 (2015)

    2015

  31. [39]

    Georges, L

    A. Georges, L. d. Medici, and J. Mravlje, Strong correla- tions from hund’s coupling, Annual Review of Condensed Matter Physics 4, 137 (2013)

    2013

  32. [40]

    Mandal, P

    S. Mandal, P. Zhang, S. Ismail-Beigi, and K. Haule, How correlated is the FeSe /srtio3 system?, Phys. Rev. Lett. 119, 067004 (2017)

    2017

  33. [41]

    H. Lin, C. L. Jacobs, C. Yan, G. M. Nolan, G. Berruto, P. Singleton, K. D. Nguyen, Y. Bai, Q. Gao, X. Wu, C.-X. Liu, G. Yan, S. Choi, C. Liu, N. P. Guisinger, P. Y. Huang, S. Mandal, and S. Yang, A Topological Superconductor Tuned by Electronic Correlations, arXiv e-prints , a...

    2025 arXiv

  34. [42]

    Gnezdilov, Y

    V. Gnezdilov, Y. G. Pashkevich, P. Lemmens, D. Wulfer- ding, T. Shevtsova, A. Gusev, D. Chareev, and A. Vasiliev, Interplay between lattice and spin states de- gree of freedom in the fese superconductor: Dynamic spin state instabilities, Phys. Rev. B 87, 144508 (2013)

    2013

  35. [43]

    Lazarevi´ c, A

    N. Lazarevi´ c, A. Baum, A. Milosavljevi´ c, L. Peis, R. Stumberger, J. Bekaert, A. ˇSolaji´ c, J. Peˇ si´ c, A. Wang, M. ˇS´ cepanovi´ c, A. M. M. Abeykoon, M. V. Miloˇ sevi´ c, C. Petrovic, Z. V. Popovi´ c, and R. Hackl, Evolution of lattice, spin, and charge properties acro...

    2022

  36. [44]

    D. J. Abramovitch, J. Mravlje, J.-J. Zhou, A. Georges, and M. Bernardi, Respective roles of electron-phonon and electron-electron interactions in the transport and quasi- particle properties of srvo3, Phys. Rev. Lett. 133, 186501 (2024)

    2024

  37. [45]

    Lee, What makes the tc of fese/srtio3 so high?, Chinese Physics B 24, 117405 (2015)

    D.-H. Lee, What makes the tc of fese/srtio3 so high?, Chinese Physics B 24, 117405 (2015)

    2015

  38. [46]

    Zhang, Z

    C. Zhang, Z. Liu, Z. Chen, Y. Xie, R. He, S. Tang, J. He, W. Li, T. Jia, S. N. Rebec, E. Y. Ma, H. Yan, M. Hashimoto, D. Lu, S.-K. Mo, Y. Hikita, R. G. Moore, H. Y. Hwang, D. Lee, and Z. Shen, Ubiquitous strong electron–phonon coupling at the interface of fese/srtio3, Nature C...

    2017

  39. [47]

    Moghadas, M

    E. Moghadas, M. Reitner, T. Wehling, G. Sangiovanni, S. Ciuchi, and S. Toschi, Effective enhancement of the electron-phonon coupling driven by nonperturbative elec- tronic density fluctuations, arXiv:2503.12113 (2025)

    2025

  40. [48]

    J. J. Lee, F. T. Schmitt, R. G. Moore, S. Johnston, Y. T. Cui, W. Li, M. Yi, Z. K. Liu, M. Hashimoto, Y. Zhang, D. H. Lu, T. P. Devereaux, D. H. Lee, and Z. X. Shen, In- terfacial mode coupling as the origin of the enhancement of tc in fese films on srtio3, Nature 515, 245 (20...

    2014

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