Microscopic mechanism for resonant light-enhanced pair correlations in K$_3$C$_{60}$

Joseph Tindall; Juan I. Aranzadi; Michael A. Sentef; Paul Fadler

arxiv: 2604.10987 · v1 · submitted 2026-04-13 · ❄️ cond-mat.supr-con · cond-mat.mtrl-sci· cond-mat.str-el· physics.optics· quant-ph

Microscopic mechanism for resonant light-enhanced pair correlations in K₃C₆₀

Juan I. Aranzadi , Joseph Tindall , Paul Fadler , Michael A. Sentef This is my paper

Pith reviewed 2026-05-10 16:17 UTC · model grok-4.3

classification ❄️ cond-mat.supr-con cond-mat.mtrl-scicond-mat.str-elphysics.opticsquant-ph

keywords K3C60light-induced superconductivitypair correlationstwo-photon resonanceexact diagonalizationDMRGHubbard modeldriven electronic system

0 comments

The pith

A symmetry-constrained two-photon pathway produces resonant enhancement of pair correlations in driven K3C60.

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

The paper establishes that resonant light-induced enhancement of pair correlations arises naturally in an ab initio electronic model of K3C60 without needing phonons. Exact diagonalization on small clusters maps out a two-photon process: the first photon reaches an odd-parity intermediate state and the second reaches an even-parity state carrying stronger pair correlations. DMRG plus Krylov calculations on larger clusters show the resonance frequency drops with system size because the delocalized doublon gains kinetic energy. On a 14-site fcc cluster the peak sits near 30 THz, moving closer to the experimental 10 THz window. The results indicate that the observed giant response at 10 THz reflects coherent pair formation rather than simple improvement in metallicity.

Core claim

In a driven electronic model of K3C60 derived from ab initio parameters, a symmetry-constrained two-photon pathway connects the even-parity ground state through an odd-parity manifold to an even-parity excited state that carries enhanced pair correlations. The resonance energy decreases with cluster size owing to kinetic-energy lowering of the delocalized doublon excitation. A single-orbital model reproduces the same downward trend and reaches a 14-site fcc cluster where the resonant peak lies at approximately 30 THz.

What carries the argument

The symmetry-constrained two-photon pathway that links the even-parity ground state to an odd-parity intermediate and then to an even-parity state with increased pair correlations.

If this is right

The resonance frequency continues to shift downward as cluster size increases.
The mechanism is independent of phonons and accounts for the observed two-order-of-magnitude efficiency gain near 10 THz.
Analogous resonant pathways are expected in other intermediate-coupling Hubbard materials where U and W are comparable.

Where Pith is reading between the lines

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

Continued downward shift in the thermodynamic limit could bring the resonance into close alignment with the experimental 10 THz value.
Material parameters that tune the U/W ratio might be used to move the resonance into desired frequency windows for light-induced superconductivity.
Phonon coupling could provide further enhancement or slight frequency shifts but is not required for the basic electronic resonance to appear.

Load-bearing premise

The resonance identified on finite clusters up to 14 sites continues to exist and stays relevant in the thermodynamic limit without being washed out by scattering or phonon channels omitted from the electronic model.

What would settle it

A calculation on clusters substantially larger than 14 sites, or in the thermodynamic limit, that shows the resonance frequency stabilizes well above 10 THz or vanishes would falsify its connection to the experimental observation.

Figures

Figures reproduced from arXiv: 2604.10987 by Joseph Tindall, Juan I. Aranzadi, Michael A. Sentef, Paul Fadler.

**Figure 2.** Figure 2: FIG. 2 [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗

read the original abstract

Recent experiments on K$_3$C$_{60}$ revealed a giant enhancement of the light-induced superconducting-like optical response for pump frequencies near 10 THz, with an efficiency roughly two orders of magnitude larger than for off-resonant excitation. Here we show that a resonant enhancement of pair correlations arises naturally in a driven electronic model of K$_3$C$_{60}$ derived from \emph{ab initio} parameters. Exact diagonalization on small clusters identifies a symmetry-constrained two-photon pathway: the first photon drives the system from the even-parity ground state to an intermediate odd-parity manifold, and the second photon drives it to an even-parity excited state with enhanced pair correlations. Guided by this structure, we develop a DMRG+Krylov approach for larger clusters and find that the resonance energy shifts downwards with system size due to the kinetic-energy gain of the delocalized doublon excitation. A simplified single-orbital model reproduces the same scaling trend and allows us to reach a 14-site fcc cluster, where the resonant peak is pushed to $\sim$ 30 THz. Our results establish a purely electronic mechanism for resonant light-enhanced pair correlations in K$_3$C$_{60}$ and independently support the view that the experimentally observed 10 THz resonance is indeed due to superconducting-like coherent pair formation rather than improved metallicity. More broadly, they suggest that related resonant pathways may arise in other intermediate-coupling Hubbard materials with on-site repulsion $U$ and electronic bandwidth $W$ on comparable scales.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Desk Editor's Note private letter to a colleague

The paper identifies a two-photon pathway for enhanced pairing but the calculated resonance is still at 30 THz on the biggest cluster, well above the experimental 10 THz.

read the letter

The punchline for this paper is that it identifies a concrete two-photon electronic pathway that can enhance pair correlations in a model for K3C60, with the resonance moving to lower frequencies as the cluster grows, but the largest system they reach still has the peak at 30 THz while the key experiment sits at 10 THz. They do a good job laying out the symmetry argument with exact diagonalization on small clusters. The ground state is even parity, one photon takes it to odd parity states, and the second photon reaches an even parity state that has more pairing. That structure guides the larger calculations. Using DMRG combined with Krylov methods they push to bigger clusters and see the resonance energy drop because the doublon can delocalize and gain kinetic energy. The simplified single-orbital Hubbard model shows the same trend and lets them hit the 14-site fcc lattice. Since the parameters are fixed from ab initio calculations done elsewhere, the resonance position comes out as a calculation rather than something adjusted to fit the data. Where it is softer is the direct connection to the 10 THz pump frequency. The downward shift is real on the sizes they can access, but there is no scaling plot or functional form given to argue that it will keep falling all the way to 10 THz in the infinite system instead of approaching some higher value. The purely electronic model also leaves out any phonon coupling or scattering processes that are likely present in the real material and could move or broaden the feature. So while the mechanism is plausible, the quantitative support for explaining the experimental resonance is still an extrapolation that needs more work to be solid. This kind of paper is useful for people who study light-driven superconductivity in molecular crystals or other systems where U and W are comparable. A reader who already knows the driven Hubbard model literature will pick up the specific pathway and the size dependence without much trouble. The calculations are standard and the logic is clear, so it deserves to go to a serious referee. I would recommend sending it for peer review, with the expectation that the finite-size extrapolation and possible phonon effects get addressed in revision.

Referee Report

2 major / 1 minor

Summary. The paper claims that resonant enhancement of pair correlations in K₃C₆₀ at ~10 THz arises from a symmetry-constrained two-photon electronic process in an ab initio-derived Hubbard-like model. Exact diagonalization on small clusters identifies an even-to-odd-to-even parity pathway that boosts doublon correlations; DMRG+Krylov calculations on larger clusters (up to 14-site fcc) show the resonance energy shifting downward with size due to doublon delocalization, reaching ~30 THz on the largest cluster. The work concludes that this purely electronic mechanism independently supports interpreting the experimental 10 THz resonance as superconducting-like pair formation rather than improved metallicity.

Significance. If the finite-size trend can be shown to extrapolate convincingly to 10 THz, the result would be significant: it supplies a microscopic, parameter-constrained electronic explanation for light-enhanced superconductivity-like response in an intermediate-coupling molecular solid, distinguishes it from metallic effects, and points to analogous resonant pathways in other Hubbard systems with U ~ W. The use of ab initio parameters, symmetry analysis, and controlled ED/DMRG numerics are clear strengths.

major comments (2)

[DMRG and single-orbital model results] The central claim that the computed resonance supports the experimental 10 THz feature rests on the downward shift continuing from ~30 THz (14-site fcc cluster) to 10 THz in the thermodynamic limit. No quantitative finite-size scaling form, extrapolation procedure, or additional data points are provided to establish this convergence rather than saturation above 10 THz (see DMRG results and the simplified single-orbital model section).
[Model definition and conclusions] The purely electronic model omits phonon and scattering channels that could shift, broaden, or suppress the resonance; while the manuscript notes these are outside scope, their potential impact on the size dependence and thermodynamic-limit relevance is not quantified, weakening the link to the experimental datum.

minor comments (1)

[Abstract and DMRG section] The abstract and main text could state the precise cluster sizes and resonance frequencies more quantitatively when describing the downward shift.

Simulated Author's Rebuttal

2 responses · 0 unresolved

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

read point-by-point responses

Referee: [DMRG and single-orbital model results] The central claim that the computed resonance supports the experimental 10 THz feature rests on the downward shift continuing from ~30 THz (14-site fcc cluster) to 10 THz in the thermodynamic limit. No quantitative finite-size scaling form, extrapolation procedure, or additional data points are provided to establish this convergence rather than saturation above 10 THz (see DMRG results and the simplified single-orbital model section).

Authors: We agree that the manuscript would benefit from a more quantitative finite-size scaling analysis to support the extrapolation. The presented data already demonstrate a systematic downward shift of the resonance energy with increasing cluster size in both the ab initio-derived model (DMRG) and the simplified single-orbital model. In the revised version we will add a dedicated finite-size scaling subsection. This will include (i) additional resonance positions obtained from the single-orbital model on all accessible cluster sizes, (ii) a plot of resonance energy versus 1/N (N = number of sites), and (iii) a linear extrapolation to the thermodynamic limit together with an estimate of the uncertainty. We will also discuss whether the trend is consistent with saturation above 10 THz or continues toward the experimental value. revision: yes
Referee: [Model definition and conclusions] The purely electronic model omits phonon and scattering channels that could shift, broaden, or suppress the resonance; while the manuscript notes these are outside scope, their potential impact on the size dependence and thermodynamic-limit relevance is not quantified, weakening the link to the experimental datum.

Authors: We acknowledge that the model is strictly electronic and that phonon and scattering channels are omitted. The manuscript already states that these effects lie outside its scope. To strengthen the discussion we will expand the concluding section with a qualitative assessment of possible phonon influences: electron-phonon coupling may broaden the resonance or provide additional relaxation pathways, yet the symmetry-protected two-photon electronic channel identified in the Hubbard-like model remains intact. We will emphasize that the electronic mechanism constitutes an independent contribution whose frequency scale is set by the ab initio parameters, thereby supporting an electronic origin even before phonon effects are included. A quantitative treatment of the combined electron-phonon dynamics is beyond the present computational framework and is noted as future work. revision: partial

Circularity Check

0 steps flagged

No circularity: resonance position computed from external ab initio parameters on finite clusters

full rationale

The paper constructs an electronic Hubbard model using parameters taken from prior ab initio calculations external to this work. Exact diagonalization on small clusters identifies a two-photon pathway by direct computation of eigenstates and matrix elements. A DMRG+Krylov method and a simplified single-orbital model then track the resonance energy on progressively larger clusters (up to 14 sites), yielding an output value of ~30 THz that shifts downward with size. No parameter is fitted to the experimental 10 THz datum, no self-citation supplies a load-bearing uniqueness theorem or ansatz, and the central claim is an output of the simulation rather than a re-statement of its inputs. The derivation chain therefore remains self-contained against external benchmarks.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 0 invented entities

The central claim rests on a driven electronic Hubbard-like model whose parameters are taken from ab initio calculations; no new particles or forces are postulated, and the only adjustable elements are the standard on-site repulsion and hopping amplitudes already fixed by the ab initio step.

axioms (2)

domain assumption The low-energy physics of K3C60 is captured by a driven single-band Hubbard model with parameters derived from ab initio calculations.
Invoked in the opening sentence of the abstract and used throughout the cluster calculations.
standard math Parity symmetry constrains the allowed two-photon transitions between even- and odd-parity manifolds.
Used to identify the resonant pathway in the exact-diagonalization section.

pith-pipeline@v0.9.0 · 5602 in / 1618 out tokens · 56860 ms · 2026-05-10T16:17:07.397392+00:00 · methodology

discussion (0)

Reference graph

Works this paper leans on

28 extracted references · 28 canonical work pages

[1]

D. N. Basov, R. D. Averitt, and D. Hsieh, Towards prop- erties on demand in quantum materials, Nature Materials 16, 1077 (2017)

work page 2017
[2]

de la Torre, D

A. de la Torre, D. M. Kennes, M. Claassen, S. Gerber, J. W. McIver, and M. A. Sentef, Colloquium: Nonther- mal pathways to ultrafast control in quantum materials, Reviews of Modern Physics93, 041002 (2021)

work page 2021
[3]

Cavalleri, Photo-induced superconductivity, Contem- porary Physics59, 31 (2018)

A. Cavalleri, Photo-induced superconductivity, Contem- porary Physics59, 31 (2018)

work page 2018
[4]

Mitrano, A

M. Mitrano, A. Cantaluppi, D. Nicoletti, S. Kaiser, A. Perucchi, S. Lupi, P. Di Pietro, D. Pontiroli, M. Ricc` o, S. R. Clark, D. Jaksch, and A. Cavalleri, Possible light- induced superconductivity in K3C60 at high temperature, Nature530, 461 (2016)

work page 2016
[5]

Budden, T

M. Budden, T. Gebert, M. Buzzi, G. Jotzu, E. Wang, T. Matsuyama, G. Meier, Y. Laplace, D. Pontiroli, M. Ricc` o, F. Schlawin, D. Jaksch, and A. Cavalleri, Evi- dence for metastable photo-induced superconductivity in K3C60, Nature Physics17, 611 (2021)

work page 2021
[6]

Cantaluppi, M

A. Cantaluppi, M. Buzzi, G. Jotzu, D. Nicoletti, M. Mi- trano, D. Pontiroli, M. Ricc` o, A. Perucchi, P. Di Pietro, and A. Cavalleri, Pressure tuning of light-induced super- conductivity in K 3C60, Nature Physics14, 837 (2018)

work page 2018
[7]

E. Rowe, B. Yuan, M. Buzzi, G. Jotzu, Y. Zhu, M. Fech- ner, M. F¨ orst, B. Liu, D. Pontiroli, M. Ricc` o, and A. Cav- alleri, Resonant enhancement of photo-induced supercon- ductivity in K 3C60, Nature Physics19, 1821 (2023)

work page 2023
[8]

M. Kim, Y. Nomura, M. Ferrero, P. Seth, O. Parcollet, and A. Georges, Enhancing superconductivity inA 3C60 fullerides, Phys. Rev. B94, 155152 (2016)

work page 2016
[9]

M. Knap, M. Babadi, G. Refael, I. Martin, and E. Dem- ler, Dynamical cooper pairing in nonequilibrium electron- phonon systems, Phys. Rev. B94, 214504 (2016)

work page 2016
[10]

Murakami, N

Y. Murakami, N. Tsuji, M. Eckstein, and P. Werner, Nonequilibrium steady states and transient dynamics of conventional superconductors under phonon driving, Phys. Rev. B96, 045125 (2017)

work page 2017
[11]

Babadi, M

M. Babadi, M. Knap, I. Martin, G. Refael, and E. Dem- ler, Theory of parametrically amplified electron-phonon superconductivity, Phys. Rev. B96, 014512 (2017)

work page 2017
[12]

Mazza and A

G. Mazza and A. Georges, Nonequilibrium superconduc- tivity in driven alkali-doped fullerides, Phys. Rev. B96, 064515 (2017)

work page 2017
[13]

D. M. Kennes, E. Y. Wilner, D. R. Reichman, and A. J. Millis, Transient superconductivity from electronic squeezing of optically pumped phonons, Nature Physics 13, 479 (2017)

work page 2017
[14]

Dasari and M

N. Dasari and M. Eckstein, Transient Floquet engineer- ing of superconductivity, Phys. Rev. B98, 235149 (2018)

work page 2018
[15]

A. Nava, C. Giannetti, A. Georges, E. Tosatti, and M. Fabrizio, Cooling quasiparticles in A 3C60 fullerides by excitonic mid-infrared absorption, Nature Physics14, 154 (2018)

work page 2018
[16]

Buzzi, G

M. Buzzi, G. Jotzu, A. Cavalleri, J. I. Cirac, E. A. Dem- ler, B. I. Halperin, M. D. Lukin, T. Shi, Y. Wang, and D. Podolsky, Higgs-mediated optical amplification in a nonequilibrium superconductor, Phys. Rev. X11, 011055 (2021)

work page 2021
[17]

Chattopadhyay, C

S. Chattopadhyay, C. J. Eckhardt, D. M. Kennes, M. A. Sentef, D. Shin, A. Rubio, A. Cavalleri, E. A. Demler, and M. H. Michael, Metastable photo-induced supercon- ductivity far above T c, npj Quantum Materials10, 34 (2025)

work page 2025
[18]

Grankin and V

A. Grankin and V. Galitski, Integrable-to-thermalizing crossover in nonequilibrium superconductors, Phys. Rev. 5 B113, 104509 (2026)

work page 2026
[19]

Chattopadhyay, M

S. Chattopadhyay, M. Michael, A. Cavalleri, and E. Demler, Giant resonant enhancement of photoin- duced dynamical cooper pairing, far above T c (2026), arXiv:2601.18712 [cond-mat.supr-con]

work page arXiv 2026
[20]

Capone, M

M. Capone, M. Fabrizio, C. Castellani, and E. Tosatti, Colloquium: Modeling the unconventional superconduct- ing properties of expanded A 3C60 fullerides, Rev. Mod. Phys.81, 943 (2009)

work page 2009
[21]

Nomura, K

Y. Nomura, K. Nakamura, and R. Arita, Ab initio deriva- tion of electronic low-energy models for C60 and aromatic compounds, Phys. Rev. B85, 155452 (2012)

work page 2012
[22]

Nomura, S

Y. Nomura, S. Sakai, M. Capone, and R. Arita, Uni- fied understanding of superconductivity and Mott tran- sition in alkali-doped fullerides from first principles, Sci- ence Advances1, e1500568 (2015)

work page 2015
[23]

Nomura and R

Y. Nomura and R. Arita, Ab initio downfolding for electron-phonon-coupled systems: Constrained density- functional perturbation theory, Phys. Rev. B92, 245108 (2015)

work page 2015
[24]

In ans-wave, spin-singlet superconductor, the pair-field susceptibility corresponding to ˆPwould diverge at the critical temperature

work page
[25]

See Supplementary Materials (forthcoming)

work page
[26]

Jotzu, G

G. Jotzu, G. Meier, A. Cantaluppi, A. Cavalleri, D. Pon- tiroli, M. Ricc` o, A. Ardavan, and M.-S. Nam, Su- perconducting fluctuations observed far above T c in the isotropic superconductor K 3C60, Phys. Rev. X13, 021008 (2023)

work page 2023
[27]

H. Aoki, N. Tsuji, M. Eckstein, M. Kollar, T. Oka, and P. Werner, Nonequilibrium dynamical mean-field theory and its applications, Reviews of Modern Physics86, 779 (2014)

work page 2014
[28]

Buzzi, D

M. Buzzi, D. Nicoletti, M. Fechner, N. Tancogne-Dejean, M. A. Sentef, A. Georges, T. Biesner, E. Uykur, M. Dres- sel, A. Henderson, T. Siegrist, J. A. Schlueter, K. Miya- gawa, K. Kanoda, M.-S. Nam, A. Ardavan, J. Coulthard, J. Tindall, F. Schlawin, D. Jaksch, and A. Cavalleri, Pho- tomolecular high-temperature superconductivity, Phys. Rev. X10, 031028 (2020)

work page 2020

[1] [1]

D. N. Basov, R. D. Averitt, and D. Hsieh, Towards prop- erties on demand in quantum materials, Nature Materials 16, 1077 (2017)

work page 2017

[2] [2]

de la Torre, D

A. de la Torre, D. M. Kennes, M. Claassen, S. Gerber, J. W. McIver, and M. A. Sentef, Colloquium: Nonther- mal pathways to ultrafast control in quantum materials, Reviews of Modern Physics93, 041002 (2021)

work page 2021

[3] [3]

Cavalleri, Photo-induced superconductivity, Contem- porary Physics59, 31 (2018)

A. Cavalleri, Photo-induced superconductivity, Contem- porary Physics59, 31 (2018)

work page 2018

[4] [4]

Mitrano, A

M. Mitrano, A. Cantaluppi, D. Nicoletti, S. Kaiser, A. Perucchi, S. Lupi, P. Di Pietro, D. Pontiroli, M. Ricc` o, S. R. Clark, D. Jaksch, and A. Cavalleri, Possible light- induced superconductivity in K3C60 at high temperature, Nature530, 461 (2016)

work page 2016

[5] [5]

Budden, T

M. Budden, T. Gebert, M. Buzzi, G. Jotzu, E. Wang, T. Matsuyama, G. Meier, Y. Laplace, D. Pontiroli, M. Ricc` o, F. Schlawin, D. Jaksch, and A. Cavalleri, Evi- dence for metastable photo-induced superconductivity in K3C60, Nature Physics17, 611 (2021)

work page 2021

[6] [6]

Cantaluppi, M

A. Cantaluppi, M. Buzzi, G. Jotzu, D. Nicoletti, M. Mi- trano, D. Pontiroli, M. Ricc` o, A. Perucchi, P. Di Pietro, and A. Cavalleri, Pressure tuning of light-induced super- conductivity in K 3C60, Nature Physics14, 837 (2018)

work page 2018

[7] [7]

E. Rowe, B. Yuan, M. Buzzi, G. Jotzu, Y. Zhu, M. Fech- ner, M. F¨ orst, B. Liu, D. Pontiroli, M. Ricc` o, and A. Cav- alleri, Resonant enhancement of photo-induced supercon- ductivity in K 3C60, Nature Physics19, 1821 (2023)

work page 2023

[8] [8]

M. Kim, Y. Nomura, M. Ferrero, P. Seth, O. Parcollet, and A. Georges, Enhancing superconductivity inA 3C60 fullerides, Phys. Rev. B94, 155152 (2016)

work page 2016

[9] [9]

M. Knap, M. Babadi, G. Refael, I. Martin, and E. Dem- ler, Dynamical cooper pairing in nonequilibrium electron- phonon systems, Phys. Rev. B94, 214504 (2016)

work page 2016

[10] [10]

Murakami, N

Y. Murakami, N. Tsuji, M. Eckstein, and P. Werner, Nonequilibrium steady states and transient dynamics of conventional superconductors under phonon driving, Phys. Rev. B96, 045125 (2017)

work page 2017

[11] [11]

Babadi, M

M. Babadi, M. Knap, I. Martin, G. Refael, and E. Dem- ler, Theory of parametrically amplified electron-phonon superconductivity, Phys. Rev. B96, 014512 (2017)

work page 2017

[12] [12]

Mazza and A

G. Mazza and A. Georges, Nonequilibrium superconduc- tivity in driven alkali-doped fullerides, Phys. Rev. B96, 064515 (2017)

work page 2017

[13] [13]

D. M. Kennes, E. Y. Wilner, D. R. Reichman, and A. J. Millis, Transient superconductivity from electronic squeezing of optically pumped phonons, Nature Physics 13, 479 (2017)

work page 2017

[14] [14]

Dasari and M

N. Dasari and M. Eckstein, Transient Floquet engineer- ing of superconductivity, Phys. Rev. B98, 235149 (2018)

work page 2018

[15] [15]

A. Nava, C. Giannetti, A. Georges, E. Tosatti, and M. Fabrizio, Cooling quasiparticles in A 3C60 fullerides by excitonic mid-infrared absorption, Nature Physics14, 154 (2018)

work page 2018

[16] [16]

Buzzi, G

M. Buzzi, G. Jotzu, A. Cavalleri, J. I. Cirac, E. A. Dem- ler, B. I. Halperin, M. D. Lukin, T. Shi, Y. Wang, and D. Podolsky, Higgs-mediated optical amplification in a nonequilibrium superconductor, Phys. Rev. X11, 011055 (2021)

work page 2021

[17] [17]

Chattopadhyay, C

S. Chattopadhyay, C. J. Eckhardt, D. M. Kennes, M. A. Sentef, D. Shin, A. Rubio, A. Cavalleri, E. A. Demler, and M. H. Michael, Metastable photo-induced supercon- ductivity far above T c, npj Quantum Materials10, 34 (2025)

work page 2025

[18] [18]

Grankin and V

A. Grankin and V. Galitski, Integrable-to-thermalizing crossover in nonequilibrium superconductors, Phys. Rev. 5 B113, 104509 (2026)

work page 2026

[19] [19]

Chattopadhyay, M

S. Chattopadhyay, M. Michael, A. Cavalleri, and E. Demler, Giant resonant enhancement of photoin- duced dynamical cooper pairing, far above T c (2026), arXiv:2601.18712 [cond-mat.supr-con]

work page arXiv 2026

[20] [20]

Capone, M

M. Capone, M. Fabrizio, C. Castellani, and E. Tosatti, Colloquium: Modeling the unconventional superconduct- ing properties of expanded A 3C60 fullerides, Rev. Mod. Phys.81, 943 (2009)

work page 2009

[21] [21]

Nomura, K

Y. Nomura, K. Nakamura, and R. Arita, Ab initio deriva- tion of electronic low-energy models for C60 and aromatic compounds, Phys. Rev. B85, 155452 (2012)

work page 2012

[22] [22]

Nomura, S

Y. Nomura, S. Sakai, M. Capone, and R. Arita, Uni- fied understanding of superconductivity and Mott tran- sition in alkali-doped fullerides from first principles, Sci- ence Advances1, e1500568 (2015)

work page 2015

[23] [23]

Nomura and R

Y. Nomura and R. Arita, Ab initio downfolding for electron-phonon-coupled systems: Constrained density- functional perturbation theory, Phys. Rev. B92, 245108 (2015)

work page 2015

[24] [24]

In ans-wave, spin-singlet superconductor, the pair-field susceptibility corresponding to ˆPwould diverge at the critical temperature

work page

[25] [25]

See Supplementary Materials (forthcoming)

work page

[26] [26]

Jotzu, G

G. Jotzu, G. Meier, A. Cantaluppi, A. Cavalleri, D. Pon- tiroli, M. Ricc` o, A. Ardavan, and M.-S. Nam, Su- perconducting fluctuations observed far above T c in the isotropic superconductor K 3C60, Phys. Rev. X13, 021008 (2023)

work page 2023

[27] [27]

H. Aoki, N. Tsuji, M. Eckstein, M. Kollar, T. Oka, and P. Werner, Nonequilibrium dynamical mean-field theory and its applications, Reviews of Modern Physics86, 779 (2014)

work page 2014

[28] [28]

Buzzi, D

M. Buzzi, D. Nicoletti, M. Fechner, N. Tancogne-Dejean, M. A. Sentef, A. Georges, T. Biesner, E. Uykur, M. Dres- sel, A. Henderson, T. Siegrist, J. A. Schlueter, K. Miya- gawa, K. Kanoda, M.-S. Nam, A. Ardavan, J. Coulthard, J. Tindall, F. Schlawin, D. Jaksch, and A. Cavalleri, Pho- tomolecular high-temperature superconductivity, Phys. Rev. X10, 031028 (2020)

work page 2020