Doping dependence of the electron-phonon coupling in two families of bilayer superconducting cuprates

Peng, Yingying; Martinelli, Leonardo; Li, Qizhi; Rossi, Mario E.; Mitrano, Matteo; Arpaia, Riccardo; Sala, M. Moretti; Gao, Qiang; Guo, Xuefei; Luca, G. M. De; Walters, A. C.; Nag, Abhishek; Barbour, Andi; Gu, Genda; Pelliciari, Jonathan; Brookes, N. B.; Abbamonte, Peter; Salluzzo, M.; Zhou, Xianju; Zhou, Kejin; Bisogni, Valentina; Braicovich, L.; Johnston, Steven; Ghiringhelli, G.

doi:10.1103/physrevb.105.115105

Cited by 9 publications

(6 citation statements)

References 63 publications

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“…39 These considerations complicate the use of detuning to accurately quantify the coupling constant and the efficacy of this technique remains unclear. 41 The original displaced oscillator model for describing phonon features in RIXS spectra presented by Ament et al 33 established the basis for interpreting phonon excitations for the condensed matter community and has been widely applied to experimental RIXS data. [26][27][28]42,43 Despite this widespread embrace, the model has important limitations.…”

Section: Pccp Papermentioning

confidence: 99%

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Quantifying vibronic coupling with resonant inelastic X-ray scattering

Gilmore

2023

Phys. Chem. Chem. Phys.

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Section: Pccp Papermentioning

confidence: 99%

“…39 These considerations complicate the use of detuning to accurately quantify the coupling constant and the efficacy of this technique remains unclear. 41…”

Section: Einstein Oscillatorsmentioning

confidence: 99%

Quantifying vibronic coupling with resonant inelastic X-ray scattering

Gilmore

2023

Phys. Chem. Chem. Phys.

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“…not limited to) quasi-1D [25,26] and 2D cuprates [5,[27][28][29][30][31][32][33][34][35], manganites [36,37], the rare-earth nickelates [38,39], and other oxides [16,[40][41][42][43][44]. In many of these examples, the relevant modes involve the bond-stretching motion of the transition metal and oxygen atoms, which is naturally described by the SSH coupling mechanism.…”

Section: Introductionmentioning

confidence: 99%

Ground state and spectral properties of the doped one-dimensional optical Hubbard-Su-Schrieffer-Heeger model

Banerjee¹,

Thomas²,

Nocera³

et al. 2023

Preprint

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We present a density matrix renormalization group (DMRG) study of the doped one-dimensional (1D) Hubbard-Su-Schrieffer-Hegger (Hubbard-SSH) model, where the atomic displacements linearly modulate the nearest-neighbor hopping integrals. Focusing on an optical variant of the model in the strongly correlated limit relevant for cuprate spin chains, we examine how the SSH interaction modifies the model's ground and excited state properties. The SSH coupling weakly renormalizes the model's single-and two-particle response functions for electron-phonon (e-ph) coupling strengths below a parameter-dependent critical value gc. For larger e-ph coupling, the sign of the effective hopping integrals changes for a subset of orbitals, which drives a lattice dimerization distinct from the standard nesting-driven picture in 1D. The spectral weight of the one-and two-particle dynamical response functions are dramatically rearranged across this transition, with significant changes in the ground state correlations. We argue that this dimerization results from the breakdown of the linear approximation for the e-ph coupling and thus signals a fundamental limitation of the linear SSH interaction. Our results have consequences for our understanding of how SSH-like interactions can enter the physics of strongly correlated quantum materials, including the recently synthesized doped cuprate spin chains.

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“…If this is true, then it is essential it identify the missing ingredient. While it is clear that strong electron correlations dominate cuprate physics, there is also a growing body of evidence that electron-phonon (e-ph) interactions are also relevant [31][32][33][34][35][36][37][38][39][40][41][42][43] . For example, several resonant inelastic x-ray scattering (RIXS) experiments have found evidence for shortrange CDW order 44,45 , which appears to couple to the lattice as evidenced by anomalous softening of several oxygen phonon branches in the vicinity of the ordering wave-vector [39][40][41][42] .…”

mentioning

confidence: 99%

“…While it is clear that strong electron correlations dominate cuprate physics, there is also a growing body of evidence that electron-phonon (e-ph) interactions are also relevant [31][32][33][34][35][36][37][38][39][40][41][42][43] . For example, several resonant inelastic x-ray scattering (RIXS) experiments have found evidence for shortrange CDW order 44,45 , which appears to couple to the lattice as evidenced by anomalous softening of several oxygen phonon branches in the vicinity of the ordering wave-vector [39][40][41][42] . This behavior calls for studies of the influence of the e-ph interaction on stripe order, particularly in light of the apparent sensitivity of stripes to perturbing interactions like t 0 .…”

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confidence: 99%

Stripe correlations in the two-dimensional Hubbard-Holstein model

et al. 2022

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Several state-of-the-art numerical methods have observed static or fluctuating spin and charge stripes in doped two-dimensional Hubbard models, suggesting that these orders play a significant role in shaping the cuprate phase diagram. Many experiments, however, also indicate that the cuprates have strong electron-phonon (e-ph) coupling, and it is unclear how this interaction influences stripe correlations. We study static and fluctuating stripe orders in the doped single-band Hubbard-Holstein model using zero temperature variational Monte Carlo and finite temperature determinant quantum Monte Carlo. We find that the lattice couples more strongly with the charge component of the stripes, leading to an enhancement or suppression of stripe correlations, depending on model parameters like the next-nearest-neighbor hopping $${t}^{{\prime} }$$ t ′ or phonon energy Ω. Our results help elucidate how the e-ph interaction can tip the delicate balance between stripe and superconducting correlations in the Hubbard-Holstein model with implications for our understanding of the high-Tc cuprates.

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Doping dependence of the electron-phonon coupling in two families of bilayer superconducting cuprates

Cited by 9 publications

References 63 publications

Quantifying vibronic coupling with resonant inelastic X-ray scattering

Quantifying vibronic coupling with resonant inelastic X-ray scattering

Ground state and spectral properties of the doped one-dimensional optical Hubbard-Su-Schrieffer-Heeger model

Stripe correlations in the two-dimensional Hubbard-Holstein model

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