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REVIEW 3 major objections 4 minor 58 references

Correlations drive the attosecond response of strongly-correlated insulators

T0 review · 3 major / 4 minor · reviewed 2026-08-09 · deepseek-v4-flash

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Pith's one-line read Attosecond pump-probe reflectivity on nickel oxide shows that intense laser light quenches the on-site Hubbard interaction U by about 100 meV within a few femtoseconds, marking the first direct time-resolved measurement of Hubbard U…

desk verdict Fresh attosecond data on NiO with a plausible but not airtight claim that the M-edge redshift tracks Hubbard U renormalization; worth a careful referee. read the letter →

arxiv 2501.19238 v2 pith:K3UMLYTJ submitted 2025-01-31 cond-mat.str-el cond-mat.mtrl-sci

Romain Cazali , Amina Alic , Matthieu Guer , Christopher J. Kaplan , Fabien Lepetit , Olivier Tcherbakoff , Stéphane Guizard , Angel Rubio
show 3 more authors
Nicolas Tancogne-Dejean Gheorghe S. Chiuzbăian Romain Géneaux
This is my paper · ORCID
classification cond-mat.str-elcond-mat.mtrl-sci PACS 71.27.+a78.47.J
keywords attosecondtransientreflectivityHubbardUrenormalizationstronglycorrelatedinsulatorsnickeloxide(NiO)time-dependentDFT+charge-transferinsulatorfew-femtoseconddynamicsdynamicalFranz-Keldysheffect
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 reports attosecond pump-probe reflectivity measurements on the strongly correlated insulator nickel oxide (NiO) and the band insulator magnesium oxide (MgO) under identical excitations. It finds that the two insulators respond differently: MgO shows field-driven oscillations typical of the dynamical Franz-Keldysh effect, while NiO shows a pure rigid redshift of its M2,3 absorption edge with no sub-cycle oscillations. The authors argue that this redshift is caused by a laser-driven reduction of the effective on-site Coulomb repulsion (Hubbard U) of about 100 meV, which shifts the upper Hubbard band downward. Because the spectral change is a pure rigid shift, the measurement directly tracks ΔU(t), showing that the interaction quench develops with a material response time of 7.0 ± 1.5 fs. If correct, this establishes that electron-electron interactions in a correlated material can be manipulated on their natural femtosecond timescale.

What carries the argument

The central object is the effective on-site Coulomb repulsion U of the Hubbard model, here the Ueff for Ni 3d orbitals in NiO. The measurement exploits the fact that the XUV probe excites a Ni 3p core electron into the empty upper Hubbard band, whose energy lies U above the lower Hubbard band; a change ΔU(t) therefore shifts the 3p-to-upper-Hubbard-band transition by ΔU(t)/2. The argument is carried by the contrast between time-dependent DFT+U simulations with a dynamically renormalized U and a control calculation with U frozen to its ground-state value: the frozen-U calculation suppresses the predicted transient reflectivity, identifying U renormalization rather than carrier injection, local-field effects, or heating as the dominant mechanism. A second object is the multiplet ligand-field model used to show that the observed rigid shift can be reproduced by a parameter set with ΔU = −100 meV and a 3.3% hybridization reduction, providing an independent route to the same conclusion.

What would settle it

An attosecond pump-probe measurement that tracks a transition whose final state is not the upper Hubbard band (for example, a Ni 2p to 3d resonant transition) would settle the claim: if its shift is not half the M-edge redshift, the interpretation of the redshift as ΔU/2 is incorrect.

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Extended reading notes

Core claim

The central claim is that the attosecond response of NiO is governed not by single-particle band-structure effects but by a light-driven quench of on-site electronic correlations. Under a 5 fs, 1.58 eV pump at 6 TW cm−2, the Ni M2,3 edge of NiO undergoes a pure rigid redshift of (−51 ± 2) meV with no resolvable 2ω oscillations, in contrast to MgO measured under identical conditions. Using real-time TDDFT+U calculations that allow the effective U to evolve dynamically, the authors show that this redshift is almost entirely due to a reduction of Hubbard U by about 100 meV, with the transition energy shifting by ΔU/2; freezing U to its ground-state value removes nearly the whole signal. Multiplet ligand-field calculations reproduce the rigid shift only if a 3.3% reduction of hybridization accompanies the U change. The measured ΔU(t) rises with a response time of 7.0 ± 1.5 fs, and the signal persists to picosecond timescales, matching earlier electron-diffraction evidence for a non-thermal structurally distorted state. The paper claims the first direct time-resolved observation of Hubbard U renormalization at its natural timescale.

Load-bearing premise

The attribution of the 51 meV M-edge redshift to a pure reduction of Hubbard U assumes that no other mechanism produces an identical rigid shift at these timescales; this identification rests on a TDDFT+U comparison and on multiplet fits that require an additional fitted hybridization reduction, while the theory gives a faster rise time than the measured 7.0 fs.

Editorial extensions

If this is right

  • The measured response time of 7.0 ± 1.5 fs constitutes a new observable: the speed at which the electron-electron interaction, or its screening, can be modified by light in a correlated insulator.
  • Since the redshift is exactly half the U change, attosecond transient reflectivity at a core-to-upper-Hubbard-band transition can serve as a quantitative, time-resolved probe of ΔU(t) in correlated materials.
  • The absence of 2ω oscillations and of CEP dependence in NiO implies that the U renormalization is governed by laser intensity rather than the instantaneous electric field, so lightwave control schemes based on field-driven band shifts may not transfer to strongly correlated systems.
  • The few-femtosecond electronic quench precedes a slower (picosecond) exchange-striction-driven lattice distortion, unifying the attosecond and long-lived response of NiO in a single sequence: interaction quench, antiferromagnetic-order reduction, then structural relaxation.

Reading between the lines

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

  • If the 7 fs timescale reflects the hopping or screening time of the Hubbard model, the same experiment on other charge-transfer or Mott insulators with different hopping integrals should show a correspondingly different response time, providing a testable scaling relation.
  • The requirement of a 3.3% hybridization reduction in the multiplet fit suggests that the laser field also modifies Ni–O hybridization; future measurements with O K-edge or Ni L-edge probes could discriminate the hybridization change from the pure U change.
  • The success of this interpretation implies that attosecond transient reflectivity can be used as a general tool to watch interaction quenches in strongly correlated systems, potentially extending to photo-induced phase transitions where U collapse is the trigger.
  • The paper's model-dependence could be sharpened by deriving the redshift-to-ΔU conversion from a sum rule or from an independent experimental observable, rather than from a theoretical fit.
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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

3 major / 4 minor

Summary. The manuscript reports attosecond transient reflectivity measurements on NiO and MgO under identical 5 fs, 1.58 eV pump pulses. MgO shows the oscillatory response of the dynamical Franz-Keldysh effect, whereas NiO shows a weaker, slower, non-oscillatory response that is well described by a rigid -51 meV redshift of the Ni M2,3 edge. The authors interpret this redshift as a light-driven quench of the on-site Hubbard U by roughly 100 meV, with a material response time of 7.0 +/- 1.5 fs, and support this interpretation with real-time TDDFT+U calculations comparing dynamic and frozen U, plus multiplet calculations. They also follow the signal to 50 ps and identify two decay timescales consistent with earlier electron-diffraction work on a nonthermal, structurally distorted state.

Significance. If the identification is correct, this would be the first time-resolved observation of light-driven Hubbard U renormalization in a strongly correlated insulator at its intrinsic few-femtosecond timescale, an important result for attosecond spectroscopy and for light-driven control in correlated materials. The paper has clear strengths: a clean experimental characterization of the rigid edge shift, a state-of-the-art TDDFT+U framework, a dynamic-versus-frozen-U comparison, a CEP-dependence check, and a thoughtful connection to longer timescale structural dynamics. However, the claim of a direct measurement of U(t) is currently stronger than the evidence, because the mapping from the measured spectral shift to Delta U(t) is model-dependent and the frozen-U control does not match the excitation conditions of the dynamic-U trajectory. These issues are correctable, but they affect the central claim.

major comments (3)
  1. [Fig. 3c and Methods, 'TDDFT+U simulations'] The frozen-U control is presented as keeping all population transfer and local-field effects while removing U dynamics, but the two trajectories are not excited identically: with U frozen, the gap remains closer to its ground-state value, so the pump absorption and the resulting carrier density differ from the dynamic-U run. The near-zero signal in Fig. 3c could therefore reflect weaker pump excitation rather than the absence of U renormalization. Please report the absorbed energy or the excited carrier density in the two runs, or repeat the frozen-U calculation at an increased pump strength that matches the dynamic-U excitation, and discuss how this affects the conclusion that the experimental redshift is almost entirely due to the renormalization of U.
  2. [Fig. 3e and Methods, 'Multiplet calculations'] The multiplet analysis shows that a pure Delta U = -100 meV does not reproduce the measured rigid shift; a simultaneous 3.3% reduction of the hybridization is required, and the authors explicitly state that the parameter choice is not unique and only linearly constrained. This means the observed observable is not uniquely tied to U within the model. The central claim that the redshift directly gives Delta U(t) therefore needs to be qualified. The authors should either provide an independent estimate of the hybridization contribution or present Delta U(t) in Fig. 4c as an effective quantity inferred within a specific model, not as a direct measurement.
  3. [Fig. 4c and 'Few-femtosecond screening dynamics'] The theory reproduces the magnitude of the effect but not its time constant: TDDFT+U predicts a faster rise than the measured electronic response time of 7.0 +/- 1.5 fs. Since one of the central claims is that the experiment accesses the true timescale of U renormalization, the disagreement in the rise time is more than a cosmetic discrepancy. The paper invokes non-local screening in EDMFT models, but no quantitative comparison is provided. Please clarify what the measured 7 fs timescale represents if the ab initio theory cannot reproduce it, and whether the extracted Delta U(t) in Fig. 4c is robust to alternative deconvolution assumptions and to the instrument response function.
minor comments (4)
  1. [Experimental setup] The sentence 'The CEP of the laser is not stabilized. However, this does not prevent the measurement of sub-cycle features as demonstrated by our MgO measurements and previous experiments' should cite the previous experiments or state explicitly how the MgO measurement demonstrates this.
  2. [Final paragraph] There is a typo: 'ultrafast phemonena' should read 'ultrafast phenomena'.
  3. [Methods, 'TDDFT+U simulations'] The sentence 'We checked, see SI, that the CEP as no impact on the light-induced of change of the Hubbard U' should read 'has no impact on the light-induced change of the Hubbard U'.
  4. [Figures 3a-c] The time-axis label appears redundantly in the first panel of Fig. 3; please unify the axis labels across panels for clarity.

Circularity Check

0 steps flagged · score 2.0 of 10

No significant circularity: the experimental redshift and the frozen-U TDDFT control are independent; self-citations are contextual, not load-bearing.

full rationale

The central observable, the transient Ni M2,3-edge reflectivity/absorption shift of −51 ± 2 meV, is measured independently of the theoretical framework and is not obtained by fitting the simulations. The TDDFT+U calculation uses the experimental pump parameters, and the dynamic-U versus frozen-U comparison in Fig. 3b–d is a genuine counterfactual control: holding U at its ground-state value while otherwise using the same method is a meaningful way to isolate the role of U dynamics. The conversion of the edge redshift to ΔU(t) = −2 × (edge shift) is a Hubbard-model relation, but ΔU(t) is also computed independently within TDDFT, so the agreement in Fig. 4c is a non-trivial comparison between an extracted experimental quantity and a computed one. The multiplet section explicitly admits that a pure ΔU does not reproduce the measured rigid shift and that an additional 3.3% hybridization reduction is needed; this is disclosed post-hoc modeling, not a fitted parameter renamed as a prediction. Refs. 19, 20, and 35 are self-citations for the prior prediction of U renormalization in NiO and for the TDDFT+U method, but the present inference rests on the new experiment and new simulations rather than on those citations alone. A possible scientific caveat, that the frozen-U trajectory may absorb less pump energy and therefore is not perfectly matched to the dynamic-U excitation conditions, is a correctness concern rather than a circular reduction. No step can be exhibited in which an input equals an output by construction, so the paper is assigned a low score reflecting only the minor self-citation context.

Assumptions & free parameters 8 free parameters · 7 assumptions · 0 invented entities

The central claim rests on the identification between an observed spectral shift and a Hubbard U change. This identification relies on the TDDFT+U framework, on the Hubbard band picture, and on multiplet parameters that are partly fitted to the data. No new physical entities, particles, or forces are introduced.

free parameters (8)
  • TDDFT+U effective Hubbard parameters U_eff(O 2p), U_eff(Ni 3d)
    Input parameters of the DFT+U method, computed from atomic orbitals of the pseudopotentials; the values affect the calculated U(t) dynamics and are not stated explicitly in the text.
  • Multiplet Hubbard U and out-of-equilibrium ΔU = U=7.3 eV; ΔU=-100 meV
    Static U is chosen to reproduce experimental XAS; ΔU follows the TDDFT+U result and is used as input to the multiplet model, not independently measured.
  • Crystal field 10Dq = 0.56 eV
    Adopted from previous NiO multiplet parameters to match the static spectrum.
  • Charge-transfer energy E_CT and relation ΔU=2ΔE_CT = 4.7 eV; ΔE_CT=ΔU/2
    Assumed linear relation between U and charge-transfer energy changes, based on TDDFT+U results.
  • Hybridization strengths V_eg, V_t2g and reduction = 2.06 eV, 1.21 eV; 3.3% reduction
    Reduction fitted so that the multiplet model reproduces the experimental rigid shift; the paper notes the parameter choice is not unique.
  • Slater integral reduction factors = F2=0.70, G1=0.66, G3=0.90
    Adjusted for best description of the measured XAS spectrum.
  • Electronic response time = 7.0 ± 1.5 fs
    Obtained by fitting the measured ΔU(t) rise with a non-instantaneous response convolved with the instrument response.
  • Long-time decay constants = τ1=300±100 fs, τ2=6.0±0.7 ps
    Fitted to the observed relaxation of the transient signal at delays up to 50 ps.
assumptions (7)
  • domain assumption Adiabatic approximation for exchange-correlation and Hubbard potentials in TDDFT+U
    Used in Eq. (2); the authors note that this approximation likely causes the underestimated response time (theory faster than the measured 7.0 fs).
  • domain assumption The XUV M2,3 edge shift is a rigid redshift with no broadening or new features, indicating no carrier injection or heating
    Assumed in the transient absorption analysis and used to exclude alternative explanations of the spectral change.
  • domain assumption Hubbard bands shift symmetrically by ±ΔU/2, so the probe transition energy shifts by ΔU/2
    Used to convert the measured redshift into ΔU(t) in Figure 4c.
  • ad hoc to paper Crystal field is conserved within the first dozen femtoseconds
    Stated in the multiplet calculations section to justify keeping 10Dq constant out of equilibrium.
  • domain assumption The instrument response is separable and calibratable with MgO and helium references
    Used to deconvolve the 7.0 fs response time from the measured rise.
  • standard math Kramers-Kronig constrained variational analysis with literature padding yields accurate absolute reflectivity
    Standard method used to extract transient absorption from reflection data.
  • domain assumption Neglect of the rhombohedral distortion in NiO calculations
    Methods state that this does not affect the calculated optical spectra.

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Pith. "Pith review of Correlations drive the attosecond response of strongly-correlated insulators." pith.science (2026). https://pith.science/paper/K3UMLYTJ

@misc{pith2026250119238,
  author       = {Pith},
  title        = {Pith review of: Correlations drive the attosecond response of strongly-correlated insulators},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/K3UMLYTJ}},
  note         = {Machine review of arXiv:2501.19238}
}
abstract

Attosecond spectroscopy of materials has provided invaluable insight into light-driven coherent electron dynamics. However, attosecond spectroscopies have so far been focused on weakly-correlated materials. As a result, the behavior of strongly-correlated systems is largely unknown at sub- to few-femtosecond timescales, even though it is typically the realm at which electron-electron interactions operate. Here we conduct attosecond-resolved experiments on the correlated insulator nickel oxide, and compare its response to a common band insulator, revealing fundamentally different behaviors. The results, together with state-of-the art time-dependent $\textit{ab initio}$ calculations, show that the correlated system response is governed by a laser-driven quench of electron correlations. The evolution of the on-site electronic interaction is measured here at its natural timescale, marking the first direct measurement of Hubbard $U$ renormalization in NiO. It is found to take place within a few femtoseconds, after which structural changes slowly start to take place. The resulting picture sheds light on the entire light-induced response of a strongly-correlated system, from attosecond to long-lived effects.

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Reference graph

Works this paper leans on

58 extracted references · 51 canonical work pages

  1. [1]

    Dagotto and Y

    E. Dagotto and Y. Tokura, Strongly correlated electronic materials: Present and future, MRS Bulletin 33, 1037–1045 (2008). 15

    work page 2008

  2. [2]

    Paschen and Q

    S. Paschen and Q. Si, Quantum phases driven by strong correlations, Nature Reviews Physics 3, 9 (2021)

    2021

  3. [3]

    Cavalleri, C

    A. Cavalleri, C. T´ oth, C. W. Siders, J. A. Squier, F. R´ aksi, P. Forget, and J. C. Kieffer, Femtosecond structural dynamics in VO 2 during an ultrafast solid-solid phase transition, Phys. Rev. Lett. 87, 237401 (2001)

    work page 2001

  4. [4]

    de la Torre, D

    A. de la Torre, D. M. Kennes, M. Claassen, S. Gerber, J. W. McIver, and M. A. Sentef, Colloquium: Nonthermal pathways to ultrafast control in quantum materials, Rev. Mod. Phys. 93, 041002 (2021)

    2021

  5. [5]

    A. S. Johnson, D. Perez-Salinas, K. M. Siddiqui, S. Kim, S. Choi, K. Volckaert, P. E. Majchrzak, S. Ulstrup, N. Agarwal, K. Hallman, R. F. Haglund, C. M. G¨ unther, B. Pfau, S. Eisebitt, D. Backes, F. Maccherozzi, A. Fitzpatrick, S. S. Dhesi, P. Gargiani, M. Valvidares, N. Artrith, F. de Groot, H. Choi, D. Jang, A. Katoch, S. Kwon, S. H. Park, H. Kim, and...

    work page 2023

  6. [6]

    Cavalleri, Photo-induced superconductivity, Contemporary Physics 59, 31 (2018)

    A. Cavalleri, Photo-induced superconductivity, Contemporary Physics 59, 31 (2018)

    work page 2018

  7. [7]

    S. Fava, G. De Vecchi, G. Jotzu, M. Buzzi, T. Gebert, Y. Liu, B. Keimer, and A. Cavalleri, Magnetic field expulsion in optically driven YBa2Cu3O6.48, Nature 632, 75 (2024)

    work page 2024

  8. [8]

    Stojchevska, I

    L. Stojchevska, I. Vaskivskyi, T. Mertelj, P. Kusar, D. Svetin, S. Brazovskii, and D. Mihailovic, Ultrafast switching to a stable hidden quantum state in an electronic crystal, Science 344, 177 (2014)

    2014

Show all 58 references
  1. [9]

    Maklar, J

    J. Maklar, J. Sarkar, S. Dong, Y. A. Gerasimenko, T. Pincelli, S. Beaulieu, P. S. Kirchmann, J. A. Sobota, S. Yang, D. Leuenberger, R. G. Moore, Z.-X. Shen, M. Wolf, D. Mihailovic, R. Ernstorfer, and L. Rettig, Coherent light control of a metastable hidden state, Science Advan...

    2023

  2. [10]

    Bloch, A

    J. Bloch, A. Cavalleri, V. Galitski, M. Hafezi, and A. Rubio, Strongly correlated electron–photon systems, Nature 606, 41 (2022)

    2022

  3. [11]

    R. E. F. Silva, I. V. Blinov, A. N. Rubtsov, O. Smirnova, and M. Ivanov, High-harmonic spectroscopy of ultrafast many-body dynamics in strongly correlated systems, Nature Photonics 12, 266 (2018)

    2018

  4. [12]

    Schultze, K

    M. Schultze, K. Ramasesha, C. D. Pemmaraju, S. A. Sato, D. Whitmore, A. Gandman, J. S. Prell, L. J. Borja, D. Prendergast, K. Yabana, D. M. Neumark, and S. R. Leone, Attosecond band-gap dynamics in silicon, Science 346, 1348 (2014)

    2014

  5. [13]

    Inzani, L

    G. Inzani, L. Adamska, A. Eskandari-asl, N. Di Palo, G. L. Dolso, B. Moio, L. J. D’Onofrio, A. Lamperti, A. Molle, R. Borrego-Varillas, M. Nisoli, S. Pittalis, C. A. Rozzi, A. Avella, and M. Lucchini, Field-driven attosecond charge dynamics in germanium, Nature Photonics 17, 1...

    2023

  6. [14]

    Schultze, E

    M. Schultze, E. M. Bothschafter, A. Sommer, S. Holzner, W. Schweinberger, M. Fiess, M. Hofstetter, R. Kien- berger, V. Apalkov, V. S. Yakovlev, M. I. Stockman, and F. Krausz, Controlling dielectrics with the electric field of light., Nature 493, 75 (2013)

    2013

  7. [15]

    Lucchini, S

    M. Lucchini, S. A. Sato, A. Ludwig, J. Herrmann, M. Volkov, L. Kasmi, Y. Shinohara, K. Yabana, L. Gallmann, and U. Keller, Attosecond dynamical Franz-Keldysh effect in polycrystalline diamond, Science 353, 916 (2016)

    2016

  8. [16]

    A. P. Jauho and K. Johnsen, Dynamical Franz-Keldysh effect, Physical Review Letters 10.1103/Phys- RevLett.76.4576 (1996)

    1996 doi

  9. [17]

    Volkov, S

    M. Volkov, S. A. Sato, A. Niedermayr, A. Rubio, L. Gallmann, and U. Keller, Floquet-Bloch resonances in near-petahertz electroabsorption spectroscopy of SiO 2, Phys. Rev. B 107, 184304 (2023)

    2023

  10. [18]

    N. F. Mott, The Basis of the Electron Theory of Metals, with Special Reference to the Transition Metals, Proceedings of the Physical Society. Section A 62, 416 (1949)

    1949

  11. [19]

    Tancogne-Dejean, M

    N. Tancogne-Dejean, M. A. Sentef, and A. Rubio, Ultrafast modification of Hubbard U in a strongly correlated material: Ab initio high-harmonic generation in NiO, Phys. Rev. Lett. 121, 097402 (2018). 16

    2018

  12. [20]

    Tancogne-Dejean, M

    N. Tancogne-Dejean, M. A. Sentef, and A. Rubio, Ultrafast transient absorption spectroscopy of the charge- transfer insulator NiO: Beyond the dynamical Franz-Keldysh effect, Physical Review B 102, 115106 (2020)

    2020

  13. [21]

    C. J. Kaplan, P. M. Kraus, A. D. Ross, M. Z¨ urch, S. K. Cushing, M. F. Jager, H.-T. Chang, E. M. Gullikson, D. M. Neumark, and S. R. Leone, Femtosecond tracking of carrier relaxation in germanium with extreme ultraviolet transient reflectivity, Physical Review B 97, 205202 (2018)

    2018

  14. [22]

    D. M. Roessler and W. C. Walker, Electronic spectrum and ultraviolet optical properties of crystalline mgo, Phys. Rev. 159, 733 (1967)

    1967

  15. [23]

    H¨ ufner, Electronic structure of NiO and related 3d-transition-metal compounds, Advances in Physics43, 183 (1994)

    S. H¨ ufner, Electronic structure of NiO and related 3d-transition-metal compounds, Advances in Physics43, 183 (1994)

    1994

  16. [24]

    G´ eneaux, C

    R. G´ eneaux, C. J. Kaplan, L. Yue, A. D. Ross, J. E. Bækhøj, P. M. Kraus, H.-T. Chang, A. Guggenmos, M.-Y. Huang, M. Z¨ urch, K. J. Schafer, D. M. Neumark, M. B. Gaarde, and S. R. Leone, Attosecond Time-Domain Measurement of Core-Level-Exciton Decay in Magnesium Oxide, Physic...

    2020

  17. [25]

    Lucchini, S

    M. Lucchini, S. A. Sato, G. D. Lucarelli, B. Moio, G. Inzani, R. Borrego-Varillas, F. Frassetto, L. Poletto, H. H¨ ubener, U. De Giovannini, A. Rubio, and M. Nisoli, Unravelling the intertwined atomic and bulk nature of localised excitons by attosecond spectroscopy, Nature Com...

    2021

  18. [26]

    A. B. Kuzmenko, Kramers–Kronig constrained variational analysis of optical spectra, Review of Scientific In- struments 76, 083108 (2005)

    2005

  19. [27]

    S. G. Chiuzb˘ aian, G. Ghiringhelli, C. Dallera, M. Grioni, P. Amann, X. Wang, L. Braicovich, and L. Patthey, Localized electronic excitations in nio studied with resonant inelastic x-ray scattering at the Ni M threshold: Evidence of spin flip, Physical Review Letters 95, 1974...

    2005

  20. [28]

    Z¨ urch, H.-T

    M. Z¨ urch, H.-T. Chang, L. J. Borja, P. M. Kraus, S. K. Cushing, A. Gandman, C. J. Kaplan, M. H. Oh, J. S. Prell, D. Prendergast, C. D. Pemmaraju, D. M. Neumark, and S. R. Leone, Direct and simultaneous observation of ultrafast electron and hole dynamics in germanium, Nature ...

    2017

  21. [29]

    Chang, A

    H.-T. Chang, A. Guggenmos, S. K. Cushing, Y. Cui, N. U. Din, S. R. Acharya, I. J. Porter, U. Kleineberg, V. Turkowski, T. S. Rahman, D. M. Neumark, and S. R. Leone, Electron thermalization and relaxation in laser-heated nickel by few-femtosecond core-level transient absorption...

    2021

  22. [30]

    X. Wang, R. Y. Engel, I. Vaskivskyi, D. Turenne, V. Shokeen, A. Yaroslavtsev, O. Gr ˚ an¨ as, R. Knut, J. O. Schunck, S. Dziarzhytski, G. Brenner, R.-P. Wang, M. Kuhlmann, F. Kuschewski, W. Bronsch, C. Sch¨ ußler- Langeheine, A. Styervoyedov, S. S. P. Parkin, F. Parmigiani, O....

    2022

  23. [31]

    Gr ˚ an¨ as, I

    O. Gr ˚ an¨ as, I. Vaskivskyi, X. Wang, P. Thunstr¨ om, S. Ghimire, R. Knut, J. S¨ oderstr¨ om, L. Kjellsson, D. Turenne, R. Y. Engel, M. Beye, J. Lu, D. J. Higley, A. H. Reid, W. Schlotter, G. Coslovich, M. Hoffmann, G. Kolesov, C. Sch¨ ußler-Langeheine, A. Styervoyedov, N. T...

    2022

  24. [32]

    Lojewski, D

    T. Lojewski, D. Golez, K. Ollefs, L. L. Guyader, L. K¨ ammerer, N. Rothenbach, R. Y. Engel, P. S. Miedema, M. Beye, G. S. Chiuzb˘ aian, R. Carley, R. Gort, B. E. V. Kuiken, G. Mercurio, J. Schlappa, A. Yaroslavtsev, A. Scherz, F. D¨ oring, C. David, H. Wende, U. Bovensiepen, M...

    2024 arXiv

  25. [33]

    Beaulieu, S

    S. Beaulieu, S. Dong, N. Tancogne-Dejean, M. Dendzik, T. Pincelli, J. Maklar, R. P. Xian, M. A. Sentef, M. Wolf, A. Rubio, L. Rettig, and R. Ernstorfer, Ultrafast dynamical lifshitz transition, Science Advances 7, eabd9275 (2021)

    2021

  26. [34]

    D. R. Baykusheva, H. Jang, A. A. Husain, S. Lee, S. F. R. TenHuisen, P. Zhou, S. Park, H. Kim, J.-K. Kim, H.-D. Kim, M. Kim, S.-Y. Park, P. Abbamonte, B. J. Kim, G. D. Gu, Y. Wang, and M. Mitrano, Ultrafast renormalization of the on-site coulomb repulsion in a cuprate supercon...

    2022

  27. [35]

    Tancogne-Dejean, M

    N. Tancogne-Dejean, M. J. T. Oliveira, and A. Rubio, Self-consistent DFT + U method for real-space time- dependent density functional theory calculations, Phys. Rev. B 96, 245133 (2017)

    2017

  28. [36]

    See Supplemental Material at, See Supplemental Material at

  29. [37]

    C. Ott, A. Kaldun, L. Argenti, P. Raith, K. Meyer, M. Laux, Y. Zhang, A. Bl¨ attermann, S. Hagstotz, T. Ding, R. Heck, J. Madro˜ nero, F. Mart ´ ın, and T. Pfeifer, Reconstruction and control of a time-dependent two-electron wave packet, Nature 516, 374 (2014)

    2014

  30. [38]

    B. R. de Roulet, L. Drescher, S. A. Sato, and S. R. Leone, Initial electron thermalization in metals measured by attosecond transient absorption spectroscopy, Phys. Rev. B 110, 174301 (2024)

    2024

  31. [39]

    Murakami, D

    Y. Murakami, D. Goleˇ z, M. Eckstein, and P. Werner, Photo-induced nonequilibrium states in mott insulators, arXiv , 2310.05201 (2023)

    2023 arXiv

  32. [40]

    Goleˇ z, M

    D. Goleˇ z, M. Eckstein, and P. Werner, Dynamics of screening in photodoped mott insulators, Phys. Rev. B 92, 195123 (2015)

    2015

  33. [41]

    Y. W. Windsor, D. Zahn, R. Kamrla, J. Feldl, H. Seiler, C.-T. Chiang, M. Ramsteiner, W. Widdra, R. Ernstorfer, and L. Rettig, Exchange-striction driven ultrafast nonthermal lattice dynamics in NiO, Phys. Rev. Lett. 126, 147202 (2021)

    2021

  34. [42]

    Kollath, A

    C. Kollath, A. M. L¨ auchli, and E. Altman, Quench dynamics and nonequilibrium phase diagram of the Bose- Hubbard model, Phys. Rev. Lett. 98, 180601 (2007)

    2007

  35. [43]

    Eckstein, M

    M. Eckstein, M. Kollar, and P. Werner, Thermalization after an interaction quench in the Hubbard model, Phys. Rev. Lett. 103, 056403 (2009)

    2009

  36. [44]

    Borsch, M

    M. Borsch, M. Meierhofer, R. Huber, and M. Kira, Lightwave electronics in condensed matter, Nature Reviews Materials 8, 668 (2023)

    2023

  37. [45]

    Hanus, V

    V. Hanus, V. Csajb´ ok, Z. P´ apa, J. Budai, Z. M´ arton, G. Z. Kiss, P. S´ andor, P. Paul, A. Szeghalmi, Z. Wang, B. Bergues, M. F. Kling, G. Moln´ ar, J. Volk, and P. Dombi, Light-field-driven current control in solids with pJ-level laser pulses at 80 MHz repetition rate, Op...

    2021

  38. [46]

    Ossiander, K

    M. Ossiander, K. Golyari, K. Scharl, L. Lehnert, F. Siegrist, J. P. B¨ urger, D. Zimin, J. A. Gessner, M. Weidman, I. Floss, V. Smejkal, S. Donsa, C. Lemell, F. Libisch, N. Karpowicz, J. Burgd¨ orfer, F. Krausz, and M. Schultze, The speed limit of optoelectronics, Nature Commu...

    2022

  39. [47]

    M. F. Jager, C. Ott, P. M. Kraus, C. J. Kaplan, W. Pouse, R. E. Marvel, R. F. Haglund, D. M. Neumark, and S. R. Leone, Tracking the insulator-to-metal phase transition in VO2 with few-femtosecond extreme UV transient absorption spectroscopy, Proceedings of the National Academy...

    2017

  40. [48]

    C. Shao, H. Lu, X. Zhang, C. Yu, T. Tohyama, and R. Lu, High-harmonic generation approaching the quantum critical point of strongly correlated systems, Phys. Rev. Lett. 128, 047401 (2022)

    2022

  41. [49]

    Uchida, G

    K. Uchida, G. Mattoni, S. Yonezawa, F. Nakamura, Y. Maeno, and K. Tanaka, High-order harmonic generation and its unconventional scaling law in the mott-insulating Ca 2RuO4, Phys. Rev. Lett. 128, 127401 (2022)

    2022

  42. [50]

    A. P. Cracknell and S. J. Joshua, The space group corepresentations of antiferromagnetic NiO, Mathematical Proceedings of the Cambridge Philosophical Society 66, 493 (1969). 18

    1969

  43. [51]

    M. J. Oliveira and F. Nogueira, Generating relativistic pseudo-potentials with explicit incorporation of semi-core states using ape, the atomic pseudo-potentials engine, Computer Physics Communications 178, 524 (2008)

    2008

  44. [52]

    Tancogne-Dejean, M

    N. Tancogne-Dejean, M. J. T. Oliveira, X. Andrade, H. Appel, C. H. Borca, G. Le Breton, F. Buchholz, A. Castro, S. Corni, A. A. Correa, U. De Giovannini, A. Delgado, F. G. Eich, J. Flick, G. Gil, A. Gomez, N. Helbig, H. H¨ ubener, R. Jest¨ adt, J. Jornet-Somoza, A. H. Larsen, ...

    2020

  45. [53]

    J. P. Perdew and A. Zunger, Self-interaction correction to density-functional approximations for many-electron systems, Phys. Rev. B 23, 5048 (1981)

    1981

  46. [54]

    The nonlocal part of the pseudopotential is omitted for conciseness

  47. [55]

    M. W. Haverkort, M. Zwierzycki, and O. K. Andersen, Multiplet ligand-field theory using wannier orbitals, Phys. Rev. B 85, 165113 (2012)

    2012

  48. [56]

    M. W. Haverkort, Documentation - quanty, https://www.quanty.org/documentation/start (2017), last mod- ified: 2017/03/01

    2017

  49. [57]

    Van der Laan, M2, 3 absorption spectroscopy of 3d transition-metal compounds, Journal of Physics: Con- densed Matter 3, 7443 (1991)

    G. Van der Laan, M2, 3 absorption spectroscopy of 3d transition-metal compounds, Journal of Physics: Con- densed Matter 3, 7443 (1991)

    1991

  50. [58]

    Weber, Pymodaq: An open-source python-based software for modular data acquisition, Review of Scientific Instruments 92 (2021)

    S. Weber, Pymodaq: An open-source python-based software for modular data acquisition, Review of Scientific Instruments 92 (2021)

    2021

Pith tools

Reviewed August 9, 2026 · model on record in the stance chip above.