Pith. sign in

REVIEW 3 major objections 6 minor 55 references

Energy and momentum relaxation through the Curie temperature in an itinerant ferromagnet

T0 review · 3 major / 6 minor · reviewed 2026-08-11 · deepseek-v4-flash

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

Pith's one-line read The ferromagnetic transition in metallic Ca2RuO4 suppresses momentum relaxation but leaves energy relaxation unchanged, identifying elastic spin-fluctuation scattering as the source of the resistive anomaly.

desk verdict A genuinely new experimental separation of momentum and energy relaxation across a ferromagnetic transition, but the null result for energy relaxation needs error bars and a quantitative bound before it can be trusted. read the letter →

arxiv 2412.08749 v1 pith:ZWVRBRNW submitted 2024-12-11 cond-mat.str-el cond-mat.mtrl-sci

Rishi Bhandia , Tim Priessnitz , Jiahao Liang , Ksenia S. Rabinovich , Ralph Romero III , Kota Katsumi , Thi Thu Huong Tran , Georg Christiani
show 3 more authors
Gennady Logvenov Bernhard Keimer N. P. Armitage
This is my paper · ORCID
classification cond-mat.str-elcond-mat.mtrl-sci
keywords terahertzspectroscopyenergyrelaxationmomentumitinerantferromagnetismCa2RuO4spinfluctuationsCurietemperaturenonlinearTHzpump-probe
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 claims that in a strained metallic thin film of Ca2RuO4, the ferromagnetic transition at 10 K changes how electrons lose momentum but not how they lose energy. The authors extract the momentum relaxation rate from linear terahertz conductivity fits and the energy relaxation rate from the exponential decay of nonlinear THz-pump/THz-probe traces. The momentum relaxation rate drops sharply below the Curie temperature and produces the resistive anomaly, while the energy relaxation rate follows a smooth low-temperature trend with no feature at 10 K. The result validates the approximation that spin fluctuations near the Curie temperature act as effectively static, elastic scatterers because of critical slowing down. This matters because it supports a general elastic-scattering explanation for resistive anomalies in ferromagnets and suggests the same picture can be tested in density-wave systems.

What carries the argument

The central machinery is the side-by-side measurement of two relaxation rates in the same film. Momentum relaxation comes from a two-Drude fit to the linear terahertz optical conductivity, $\sigma(\omega)=\epsilon_0[-\omega_{1,p}^2/(i\omega-2\pi\Gamma_{1,M})-\omega_{2,p}^2/(i\omega-2\pi\Gamma_{2,M})-i(\epsilon_\infty-1)\omega]$, where the narrow Drude width $\Gamma_{2,M}$ is read as the momentum relaxation rate. Energy relaxation comes from fitting the nonlinear THz-pump/THz-probe signal at delays beyond 7 ps to $E_{NL}(t)\propto A e^{-2\pi\Gamma_E t}+C$, with $\Gamma_E$ identified as the electronic energy relaxation rate following prior work on metallic ruthenates. The argument works by comparing the temperature dependence of $\Gamma_E$ and $\Gamma_M$ through Tc: one has a strong anomaly, the other does not. The interpretive frame is the static spin-fluctuation approximation, motivated by critical slowing down, in which scattering off magnetic fluctuations is elastic and relaxes momentum without draining energy.

What would settle it

Extend the THz pump-probe delay window well beyond the current range and fit with a two-exponential model that lets the long-lived component vary freely; if the extracted $\Gamma_E$ then develops a kink at 10 K or depends on pump fluence, the claim that energy relaxation is unaffected collapses. A complementary check would be time-resolved photoemission of the electronic temperature after THz excitation across the transition.

Watch

Extended reading notes

Core claim

On the paper's own terms, the discovery is that the momentum and energy relaxation rates of metallic Ca2RuO4 decouple at the ferromagnetic transition. The THz optical conductivity is described by a narrow plus a broad Drude term; the narrow term's spectral weight increases dramatically below Tc and its momentum relaxation rate $\Gamma_M$ drops, accounting for the drop in DC resistivity. The nonlinear THz response shows a fast exponential decay attributed to electronic energy relaxation, with rate $\Gamma_E$, plus a long-lived constant component. $\Gamma_E$ decreases smoothly with cooling, following the expected low-temperature electron-phonon behavior, and shows no feature at 10 K, whereas $\Gamma_M$ changes strongly. The paper concludes that the scattering processes that turn on at the magnetic transition relax momentum without relaxing energy, so spin fluctuations are effectively static and elastic scatterers near Tc, and energy leaves the electrons through the conventional acoustic-phonon channel.

Load-bearing premise

Everything hinges on whether the faster of the two decay signals seen in the pump-probe trace really is the electrons dumping energy, and whether the fit can cleanly tell it apart from the slow, long-lived background; if that assignment or separation is wrong, the claim that energy relaxation does not change across the magnetic transition is not supported.

Editorial extensions

If this is right

  • The resistive drop at the Curie temperature in Ca2RuO4 is caused by the appearance of a narrow, slowly relaxing Drude channel whose momentum relaxation rate collapses, not by a change in how the electrons shed heat.
  • Electronic energy relaxation in this itinerant ferromagnet continues through the conventional electron-phonon channel, so collective magnetic excitations are not a significant energy-loss channel in this temperature range.
  • The static, elastic spin-fluctuation approximation used in theories of ferromagnetic resistive anomalies is supported by data, at least for this material.
  • The same experimental separation of momentum and energy relaxation can be applied to charge-density-wave and spin-density-wave materials to test whether their resistive anomalies are also elastic in origin.
  • The long-lived heating component of the nonlinear response grows below Tc together with the conductivity, indicating that the magnetic transition mainly changes how current is dissipated, not how heat is ultimately carried away.

Reading between the lines

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

  • A testable extension: measuring $\Gamma_E$ with varying pump fluence or in a magnetic field across Tc would check whether the clean separation of the fast and long-lived components holds; if the extracted $\Gamma_E$ becomes fluence-dependent at Tc, the two-timescale fit would need revision.
  • If the elastic-scattering picture generalizes, resistive anomalies in CDW and SDW systems such as kagome metals and pnictides should show the same pattern—momentum relaxation dropping without an energy-relaxation anomaly—which nonlinear THz spectroscopy can check directly.
  • The decoupling suggests that in applications involving hot electrons, magnetic ordering may control electrical resistance while leaving electronic heat relaxation times roughly unchanged, affecting how such devices dissipate power.
  • The temperature independence of the broad Drude term hints that the two conduction channels are largely independent; if true, changing magnetic order should only affect the narrow channel, a prediction that could be tested by doping or strain studies.
Share X Bluesky LinkedIn Reddit HN

Signed reviews

No signed human review yet.

Editorial analysis

A structured set of objections, weighed in public.

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

Referee Report

3 major / 6 minor

Summary. The paper reports a combined linear-response THz spectroscopy and nonlinear THz-pump/THz-probe study of strained metallic Ca2RuO4 thin films that undergo a ferromagnetic transition at 10 K. The linear THz conductivity is modeled as a sum of two Drude terms, and the nonlinear transients are fit to a single exponential plus a long-lived constant, Eq. (2). The authors find that the spectral weight of the narrow Drude term increases and the corresponding momentum relaxation rate drops sharply through the Curie temperature, while the energy relaxation rate extracted from the exponential decay shows no anomaly across the transition. They interpret this as evidence that the dominant scattering change at the ferromagnetic transition relaxes momentum without relaxing energy, consistent with effectively elastic scattering off quasi-static spin fluctuations, and they suggest the scenario may extend to other density-wave systems.

Significance. If the central result holds, the paper provides a rare direct and separate measurement of energy and momentum relaxation across a magnetic phase transition in an itinerant ferromagnet. The comparison is timely and well motivated, and the experimental design, including crossed-polarization detection and differential chopping, is careful. The conclusion supports a long-standing approximation of de Gennes-Friedel and Fisher-Langer that spin fluctuations near Tc can be treated as effectively static for transport. The main value is the empirical separation of the two relaxation channels, which is not circular and does not rely on a specific microscopic model. However, the strength of the claim depends on a reliable extraction of the energy relaxation rate, and that extraction currently lacks quantitative support.

major comments (3)
  1. [Non-linear THz-pump THz-probe data, Eq. (2) and Fig. 4] The null result for Gamma_E is not quantitatively supported as presented. The fit model A exp(-2 pi Gamma_E t) + C is fit only for t > 7 ps, and Fig. 4(b) shows that the constant C grows sharply through Tc. Over the finite time window, a slow exponential with decay time comparable to or longer than the window is indistinguishable from C; if the amplitude of that slow component varies with temperature, the fitted Gamma_E and A can be biased in a temperature-dependent way that could mask a real anomaly at Tc. The paper reports no error bars on Gamma_E and no quantitative bound such as |Gamma_E(5 K) - Gamma_E(15 K)|. I request fit residuals, confidence intervals from bootstrap or covariance analysis, and a test of the model with either two exponentials or with C constrained by the late-time data, to demonstrate that the null result is robust.
  2. [Non-linear THz-pump THz-probe data, identification of Gamma_E] The assignment of the short decay time to electronic energy relaxation rests on Ref. [41], an unpublished preprint from the same group, as acknowledged by the phrase 'we believe' in the text. Because the central comparison between Gamma_E and Gamma_M depends on this assignment, the paper should provide independent support, such as fluence-dependent measurements, a comparison with a known energy-relaxation channel, or an explicit statement that the conclusion is conditional on this identification. Without that, a reader cannot distinguish energy relaxation from alternative processes such as hot-carrier recombination or trap dynamics.
  3. [Results, Fig. 4(c)] The claim that Gamma_E is 'unaffected' by magnetic order is ambiguous because the same paragraph states that Gamma_E decreases as the sample is cooled. The meaningful statement is that Gamma_E has no anomaly or kink at Tc. Please quantify the size of the momentum-relaxation anomaly and state what corresponding change in Gamma_E would have been detectable with the present signal-to-noise ratio, so that the null result has clear falsifiable content.
minor comments (6)
  1. [Author affiliations] The affiliation line contains a duplicate 'Department of Department of Physics and Astronomy'; this should be corrected.
  2. [References] Reference [50] is listed as 'S. H. et al., unpublished (2024)' without a full author list or title; either provide complete information or remove the citation.
  3. [Methods] The thermal grease name is misspelled as 'Apeizon'; the standard spelling is 'Apiezon'.
  4. [Eq. (2)] Equation (2) uses the proportional-to symbol ENL(t) proportional to ..., while the text and Fig. 4(a) present normalized data; please clarify the normalization and whether the fit is to ENL or ENL/Eprobe.
  5. [Fig. 4(b) and text] The caption refers to the 'DC component of the exponential fit' while the text calls it the 'long-lived component'; please use consistent terminology throughout.
  6. [Discussion] The statement that the scenario 'can likely be extended' to CDW and SDW systems is speculative; it would be helpful to label this explicitly as an outlook rather than a demonstrated result.

Circularity Check

1 steps flagged · score 4.0 of 10

Energy-relaxation identification rests on a same-group preprint; the empirical ΓE comparisons themselves are independent fits.

  1. self citation load bearing [Fig. 4 discussion, immediately after Eq. (2)]
    "Consistent with prior measurements on metallic ruthenates [41], we believe that the shorter of the two timescales correspond to the decay of energy from the electronic system."

    The paper's central claim ('the energy relaxation rate remains unaffected by the emergence of magnetic order') depends on interpreting the short decay time in Eq. (2) as the electronic energy relaxation rate. That interpretation is not derived here; it is imported from Ref. [41], a preprint by overlapping authors. If the short timescale were instead some other relaxation process, the conclusion that energy relaxation is unchanged across TC would not follow. This is a load-bearing self-citation. It is not an equation-level equivalence, because the ΓE values themselves come from the paper's own fits, so the empirical comparison has independent content.

full rationale

The paper's central comparison is empirical: momentum relaxation rates are extracted from Drude fits to THz conductivity (Eq. 1) and energy relaxation rates from fits of Eq. (2) to nonlinear pump-probe traces. Neither quantity is derived from the other or from the conclusion, so the claim that ΓE is flat across TC while ΓM drops is not circular in a derivation sense. The one load-bearing step that touches self-citation is the identification of the short decay time in Eq. (2) with electronic energy relaxation, which is taken from Ref. [41] (same group, arXiv preprint). That identification is essential: without it, the flat ΓE has no bearing on energy relaxation. However, the fit values of ΓE are the paper's own, so the empirical content is independent of the cited work. The skeptic's concern about C in Eq. (2) absorbing a slow component and biasing ΓE is a statistical/identifiability issue, and the paper gives no error bars, but that is a correctness risk, not a circularity. Score 4 reflects the load-bearing self-citation without implying that the measurement reduces to its inputs.

Assumptions & free parameters 5 free parameters · 5 assumptions · 0 invented entities

The central claim rests on several fitted parameters (Drude weights, scattering rates, ΓE) and on modeling assumptions about what the measured time scales mean. No new physical entities are introduced. The most fragile input is the identification of the short THz decay time as the electronic energy relaxation rate, which is inherited from prior work by the same group.

free parameters (5)
  • Drude plasma frequencies (ω1,p^2 and ω2,p^2) = temperature dependent, values in Fig. 3(a)-(b) but not tabulated
    The optical conductivity is fit to a two-Drude model (Eq. 1), and the spectral weights of the broad and narrow Drude terms are free parameters. The narrow Drude weight increases sharply below Tc.
  • Momentum relaxation rates (Γ1,M, Γ2,M) = temperature dependent, Fig. 3(c)
    Current relaxation rates fitted to the Drude model; the narrow Drude rate Γ2,M is the 'momentum relaxation rate' whose decrease across Tc is central to the paper's conclusion.
  • High-frequency dielectric constant ε∞ = not stated
    Fitted parameter in Eq. 1 to account for higher-band contributions.
  • Energy relaxation rate ΓE = temperature dependent, Fig. 4(c); values around 0.1-0.4 THz
    The decay rate from fitting the nonlinear THz response to E_NL(t) ∝ A exp(-2πΓE t) + C (Eq. 2). The claim that ΓE is temperature-independent across Tc is the main result.
  • Exponential amplitude A and long-lived constant C = C plotted in Fig. 4(b)
    Additional fit parameters in Eq. 2; C is interpreted as a heating-related long-lived signal.
assumptions (5)
  • domain assumption The shorter decay timescale in the nonlinear THz response corresponds to the electronic energy relaxation rate
    Stated as 'we believe' in the text, based on prior measurements on metallic ruthenates (Ref. [41]). The central conclusion that energy relaxation is unaffected by magnetic order depends on this identification.
  • domain assumption For sufficiently isotropic dispersion, the Drude current relaxation rate is equivalent to the momentum relaxation rate
    Invoked in the text justifying Γ1,M, Γ2,M as momentum relaxation rates. If Ca2RuO4 has anisotropic scattering, the comparison between ΓE and ΓM could be distorted.
  • domain assumption The film is an itinerant ferromagnet with Tc=10 K
    Taken from prior characterization (Ref. [32], Dietl thesis) and resistivity anomaly; the paper does not directly measure magnetization or confirm magnetic order in this film.
  • domain assumption The long-lived component C is a thermal/heating background that does not contaminate the extracted ΓE
    The model E_NL = A exp(-2πΓE t) + C assumes the constant term is separable from the exponential decay; if the long-lived mode overlaps the decay, ΓE may be biased.
  • standard math Standard Drude model for optical conductivity
    Eq. 1 assumes a sum of two Drude responses plus a high-frequency dielectric constant. This is a standard parameterization.

how reviews work

0 comments
Cite this review

Pith. "Pith review of Energy and momentum relaxation through the Curie temperature in an itinerant ferromagnet." pith.science (2026). https://pith.science/paper/ZWVRBRNW

@misc{pith2026241208749,
  author       = {Pith},
  title        = {Pith review of: Energy and momentum relaxation through the Curie temperature in an itinerant ferromagnet},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/ZWVRBRNW}},
  note         = {Machine review of arXiv:2412.08749}
}
abstract

In this work, we combine conventional linear response time-domain THz spectroscopy with non-linear THz-pump THz-probe techniques to study metallic strained thin films of $\mathrm{Ca}_2\mathrm{RuO}_4$, which undergo a transition into a ferromagnetic state at 10 K. Such measurements allowing us to independently measure momentum and energy relaxation rates. We find that while the momentum relaxation rate decreases significantly at the ferromagnetic transition, the energy relaxation rate remains unaffected by the emergence of magnetic order. This shows that the dominant changes to scattering across the transition correspond to scatterings that relax momentum without relaxing energy. It is consistent with a scenario where energy is not carried off by coupling to collective magnetic degrees of freedom. Instead, the principal channel for energy relaxation remains the conventional one e.g. coupling to acoustic phonons. This observation validates the approximation used in the conventional understanding of resistive anomalies of ferromagnets across the Curie temperature, which due to critical slowing down, spin fluctuations can be treated as effectively static and scattering off of them elastic. This scenario can likely be extended to resistive anomalies at other phase transitions to charge- and spin-density wave states in kagome metals or pnictide system

Figures

Figures reproduced from arXiv: 2412.08749 by the authors.

Figure 1
Figure 1. FIG. 1. (a) The resistivity of the 35 [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 3
Figure 3. FIG. 3. The results of the Drude fits to the THz conductivity. [PITH_FULL_IMAGE:figures/full_fig_p003_3.png] view at source ↗
Figure 4
Figure 4. FIG. 4. Non-linear THz-pump THz-probe data. (a) [PITH_FULL_IMAGE:figures/full_fig_p004_4.png] view at source ↗

Discussion (0). Continue with ORCID to comment.

Reference graph

Works this paper leans on

55 extracted references · 52 canonical work pages

  1. [41]

    Energy Relaxation and dynamics in the correlated metal Sr$_2$RuO$_4$ via THz two-dimensional coherent spectroscopy

    D. Barbalas, R. R. III, D. Chaudhuri, F. Mahmood, H. P. Nair, N. J. Schreiber, D. G. Schlom, K. M. Shen, and N. P. Armitage, Energy relaxation and Dynamics in the correlated metal Sr2RuO4 via thz two-dimensional coher- ent spectroscopy (2023), arXiv:2312.13502 [cond-mat.str- el]

    work page Pith review arXiv 2023

  2. [1]

    Gerlach, The modification of electrical resistance in magnetization, Physikalische Zeitschrift, Leipzig 33, 953 (1932)

    W. Gerlach, The modification of electrical resistance in magnetization, Physikalische Zeitschrift, Leipzig 33, 953 (1932)

    work page 1932

  3. [2]

    P. P. Craig, W. I. Goldburg, T. A. Kitchens, and J. I. Budnick, Transport properties at critical points: The re- sistivity of nickel, Phys. Rev. Lett. 19, 1334 (1967)

    work page 1967

  4. [3]

    Moriya, Recent progress in the theory of itinerant electron magnetism, Journal of Magnetism and Magnetic Materials 14, 1 (1979)

    T. Moriya, Recent progress in the theory of itinerant electron magnetism, Journal of Magnetism and Magnetic Materials 14, 1 (1979)

    work page 1979

  5. [4]

    Klein, J

    L. Klein, J. S. Dodge, C. H. Ahn, G. J. Snyder, T. H. Geballe, M. R. Beasley, and A. Kapitulnik, Anomalous 5 Spin Scattering Effects in the Badly Metallic Itinerant Ferromagnet SrRuO3, Physical Review Letters 77, 2774 (1996)

    work page 1996

  6. [5]

    J. M. Santiago, C.-L. Huang, and E. Morosan, Itinerant magnetic metals, Journal of Physics: Condensed Matter 29, 373002 (2017)

    work page 2017

  7. [6]

    Y. Wang, G. Boss´ e, H. P. Nair, N. J. Schreiber, J. P. Ruf, B. Cheng, C. Adamo, D. E. Shai, Y. Lubashevsky, D. G. Schlom, K. M. Shen, and N. P. Armitage, Subterahertz Momentum Drag and Violation of Matthiessen’s Rule in an ultraclean ferromagnetic SrRuO 3 metallic thin film, Physical Review Letters 125, 217401 (2020)

    work page 2020

  8. [7]

    De Gennes and J

    P. De Gennes and J. Friedel, Anomalies de r´ esistivit´ e dans certains m´ etaux magn ´ ıques, Journal of Physics and Chemistry of Solids 4, 71 (1958)

    work page 1958

Show all 55 references
  1. [8]

    M. E. Fisher and J. S. Langer, Resistive anomalies at magnetic critical points, Phys. Rev. Lett. 20, 665 (1968)

    1968

  2. [9]

    F. C. Zumsteg and R. D. Parks, Electrical resistivity of nickel near the curie point, Phys. Rev. Lett. 24, 520 (1970)

    1970

  3. [10]

    L. W. Shacklette, Specific heat and resistivity of iron near its curie point, Phys. Rev. B 9, 3789 (1974)

    1974

  4. [11]

    D. J. W. Geldart, Effect of inelastic scattering on resistive anomalies at magnetic critical points, Phys. Rev. B 15, 3455 (1977)

    1977

  5. [12]

    Takayama, J

    T. Takayama, J. Chaloupka, A. Smerald, G. Khaliullin, and H. Takagi, Spin–Orbit-Entangled Electronic Phases in 4d and 5d Transition-Metal Compounds, Journal of the Physical Society of Japan 90, 062001 (2021)

    2021

  6. [13]

    G. Cao, C. Alexander, S. McCall, J. Crow, and R. Guertin, From antiferromagnetic insulator to ferro- magnetic metal: A brief review of the layered ruthenates, Materials Science and Engineering: B 63, 76 (1999)

    1999

  7. [14]

    Maeno, H

    Y. Maeno, H. Hashimoto, K. Yoshida, S. Nishizaki, T. Fujita, J. G. Bednorz, and F. Lichtenberg, Supercon- ductivity in a layered perovskite without copper, Nature 372, 532 (1994)

    1994

  8. [15]

    Maeno, S

    Y. Maeno, S. Yonezawa, and A. Ramires, Still Mystery after All These Years — Unconventional Superconductiv- ity of Sr2RuO4, Journal of the Physical Society of Japan 93, 062001 (2024)

    2024

  9. [16]

    N. P. Armitage, Superconductivity mystery turns 25, Na- ture 576, 386 (2019)

    2019

  10. [17]

    Grinenko, S

    V. Grinenko, S. Ghosh, R. Sarkar, J.-C. Orain, A. Nikitin, M. Elender, D. Das, Z. Guguchia, F. Br¨ uckner, M. E. Barber, J. Park, N. Kikugawa, D. A. Sokolov, J. S. Bobowski, T. Miyoshi, Y. Maeno, A. P. Mackenzie, H. Luetkens, C. W. Hicks, and H.-H. Klauss, Split superconductin...

    2021

  11. [18]

    Steppke, L

    A. Steppke, L. Zhao, M. E. Barber, T. Scaffidi, F. Jerzembeck, H. Rosner, A. S. Gibbs, Y. Maeno, S. H. Simon, A. P. Mackenzie, and C. W. Hicks, Strong peak in T c of Sr 2RuO4 under uniaxial pressure, Science 355, eaaf9398 (2017)

    2017

  12. [19]

    Jerzembeck, H

    F. Jerzembeck, H. S. Røising, A. Steppke, H. Rosner, D. A. Sokolov, N. Kikugawa, T. Scaffidi, S. H. Simon, A. P. Mackenzie, and C. W. Hicks, The superconduc- tivity of Ca 2RuO4 under C-axis uniaxial stress, Nature Communications 13, 4596 (2022)

    2022

  13. [20]

    Nakatsuji, S.-i

    S. Nakatsuji, S.-i. Ikeda, and Y. Maeno, Ca 2RuO4: New Mott Insulators of Layered Ruthenate, Journal of the Physical Society of Japan 66, 1868 (1997)

    1997

  14. [21]

    C. S. Alexander, G. Cao, V. Dobrosavljevic, E. Lochner, S. McCall, J. E. Crow, and R. P. Guertin, Destruction of the Mott Insulating Ground State of Ca 2RuO4 by a Structural Transition, Physical Review B 60, R8422 (1999)

    1999

  15. [22]

    G. Cao, S. McCall, V. Dobrosavljevic, C. S. Alexander, J. E. Crow, and R. P. Guertin, Ground-state instability of the Mott insulator Ca 2RuO4 impact of slight La doping on the metal-insulator transition and magnetic ordering, Physical Review B 61, R5053 (2000)

    2000

  16. [23]

    Fang and K

    Z. Fang and K. Terakura, Magnetic phase diagram of Ca2−xSrxRuO4 governed by structural distortions, Phys- ical Review B 64, 020509 (2001)

    2001

  17. [24]

    Friedt, M

    O. Friedt, M. Braden, G. Andr´ e, P. Adelmann, S. Nakat- suji, and Y. Maeno, Structural and magnetic aspects of the metal-insulator transition in Ca 2−xSrxRuO4, Physi- cal Review B 63, 174432 (2001)

    2001

  18. [25]

    Nakamura, T

    F. Nakamura, T. Goko, M. Ito, T. Fujita, S. Nakatsuji, H. Fukazawa, Y. Maeno, P. Alireza, D. Forsythe, and S. R. Julian, From Mott insulator to ferromagnetic metal: A pressure study of Ca 2RuO4, Physical Review B 65, 220402 (2002)

    2002

  19. [26]

    Taniguchi, K

    H. Taniguchi, K. Nishimura, R. Ishikawa, S. Yonezawa, S. K. Goh, F. Nakamura, and Y. Maeno, Anisotropic uni- axial pressure response of the Mott insulator Ca 2RuO4, Physical Review B 88, 205111 (2013)

    2013

  20. [27]

    Steffens, O

    P. Steffens, O. Friedt, P. Alireza, W. G. Marshall, W. Schmidt, F. Nakamura, S. Nakatsuji, Y. Maeno, R. Lengsdorf, M. M. Abd-Elmeguid, and M. Braden, High-pressure diffraction studies on Ca 2RuO4, Physical Review B 72, 094104 (2005)

    2005

  21. [28]

    D. G. Schlom, L.-Q. Chen, X. Pan, A. Schmehl, and M. A. Zurbuchen, A Thin Film Approach to Engineer- ing Functionality into Oxides, Journal of the American Ceramic Society 91, 2429 (2008)

    2008

  22. [29]

    Ramesh and D

    R. Ramesh and D. G. Schlom, Creating emergent phe- nomena in oxide superlattices, Nature Reviews Materials 4, 257 (2019)

    2019

  23. [30]

    C. Ahn, A. Cavalleri, A. Georges, S. Ismail-Beigi, A. J. Millis, and J.-M. Triscone, Designing and controlling the properties of transition metal oxide quantum materials, Nature Materials 20, 1462 (2021)

    2021

  24. [31]

    L. Miao, P. Silwal, X. Zhou, I. Stern, J. Peng, W. Zhang, L. Spinu, Z. Mao, and D. Ho Kim, Itinerant ferro- magnetism and geometrically suppressed metal-insulator transition in epitaxial thin films of Ca 2RuO4, Applied Physics Letters 100, 052401 (2012)

    2012

  25. [32]

    C. J. Dietl, Synthesis and Electronic Ordering Phenom- ena of Calcium Ruthenate Thin Films , Ph.D. thesis, Uni- versity of Stuttgart (2018)

    2018

  26. [33]

    Cirillo, V

    C. Cirillo, V. Granata, G. Avallone, R. Fittipaldi, C. At- tanasio, A. Avella, and A. Vecchione, Emergence of a metallic metastable phase induced by electrical current in Ca2RuO4, Physical Review B 100, 235142 (2019)

    2019

  27. [34]

    F¨ ursich, J

    K. F¨ ursich, J. Bertinshaw, P. Butler, M. Krautloher, M. Minola, and B. Keimer, Raman scattering from current-stabilized nonequilibrium phases in Ca 2RuO4, Physical Review B 100, 081101 (2019)

    2019

  28. [35]

    Jenni, F

    K. Jenni, F. Wirth, K. Dietrich, L. Berger, Y. Sidis, S. Kunkem¨ oller, C. P. Grams, D. I. Khomskii, J. Hem- berger, and M. Braden, Evidence for current-induced phase coexistence in Ca 2RuO4 and its influence on mag- netic order, Physical Review Materials 4, 085001 (2020)

    2020

  29. [36]

    Nakamura, M

    F. Nakamura, M. Sakaki, Y. Yamanaka, S. Tamaru, 6 T. Suzuki, and Y. Maeno, Electric-field-induced metal maintained by current of the Mott insulator Ca 2RuO4, Scientific Reports 3, 2536 (2013)

    2013

  30. [37]

    Okazaki, Y

    R. Okazaki, Y. Nishina, Y. Yasui, F. Nakamura, T. Suzuki, and I. Terasaki, Current-Induced Gap Sup- pression in the mott insulator Ca 2RuO4, Journal of the Physical Society of Japan 82, 103702 (2013)

    2013

  31. [38]

    Verma, D

    A. Verma, D. Goleˇ z, O. Y. Gorobtsov, K. Kaj, R. Russell, J. Z. Kaaret, E. Lamb, G. Khalsa, H. P. Nair, Y. Sun, R. Bouck, N. Schreiber, J. P. Ruf, V. Ramaprasad, Y. Kubota, T. Togashi, V. A. Stoica, H. Padmanab- han, J. W. Freeland, N. A. Benedek, O. G. Shpyrko, J. W. Harter,...

    2024

  32. [39]

    Mahmood, D

    F. Mahmood, D. Chaudhuri, S. Gopalakrishnan, R. Nandkishore, and N. P. Armitage, Observation of a marginal Fermi glass, Nature Physics 17, 627 (2021)

    2021

  33. [40]

    Katsumi, J

    K. Katsumi, J. Fiore, M. Udina, R. Romero, D. Barbalas, J. Jesudasan, P. Raychaudhuri, G. Seibold, L. Benfatto, and N. P. Armitage, Revealing novel aspects of light- matter coupling by terahertz two-dimensional coherent spectroscopy: The case of the amplitude mode in super- co...

    2024

  34. [42]

    Y. Wang, H. P. Nair, N. J. Schreiber, J. P. Ruf, B. Cheng, D. G. Schlom, K. M. Shen, and N. P. Armitage, Sep- arated transport relaxation scales and interband scat- tering in thin films of SrRuO 3, CaRuO 3, and Sr 2RuO4, Physical Review B 103, 205109 (2021)

    2021

  35. [43]

    Dietl, S

    C. Dietl, S. K. Sinha, G. Christiani, Y. Khaydukov, T. Keller, D. Putzky, S. Ibrahimkutty, P. Wochner, G. Logvenov, P. A. van Aken, B. J. Kim, and B. Keimer, Tailoring the electronic properties of Ca 2RuO4 via epitaxial strain, Applied Physics Letters 112, 031902 (2018)

    2018

  36. [44]

    K. S. Rabinovich, G. Kim, A. N. Yaresko, G. Chris- tiani, G. Logvenov, B. Keimer, and A. V. Boris, Epi- taxial growth and stoichiometry control of pyrochlore Nd2Ru2O7 thin films, Physical Review Materials 8, 053801 (2024)

    2024

  37. [45]

    Bhandia, D

    R. Bhandia, D. Barbalas, R. Xiao, J. R. Chamorro, T. Berry, T. M. McQueen, N. Samarth, and N. P. Ar- mitage, Anomalous electronic energy relaxation and soft phonons in the Dirac semimetal Cd 3As2, Phys. Rev. B 110, 075131 (2024)

    2024

  38. [46]

    Lavasani, D

    A. Lavasani, D. Bulmash, and S. D. Sarma, Wiedemann- Franz law and Fermi liquids, Physical Review B 99, 085104 (2019)

    2019

  39. [47]

    H. T. Dang, J. Mravlje, A. Georges, and A. J. Mil- lis, Band structure and terahertz optical conductivity of transition metal oxides: theory and application to CaRuO3, Physical Review Letters 115, 107003 (2015)

    2015

  40. [48]

    Conforti and G

    M. Conforti and G. Della Valle, Derivation of third-order nonlinear susceptibility of thin metal films as a delayed optical response, Physical Review B 85, 245423 (2012)

    2012

  41. [49]

    Kawasaki, A

    S. Kawasaki, A. Nakano, H. Taniguchi, H. J. Cho, H. Ohta, F. Nakamura, and I. Terasaki, Thermal Dif- fusivity of the Mott Insulator Ca 2RuO4 in a Non- equilibrium Steady State, Journal of the Physical Society of Japan 90, 063601 (2021)

    2021

  42. [50]

    S. H. et al., unpublished (2024)

    2024

  43. [51]

    P. B. Allen, Theory of thermal relaxation of electrons in metals, Physical Review Letters 59, 1460 (1987)

    1987

  44. [52]

    Glorioso and S

    P. Glorioso and S. A. Hartnoll, Joule heating in bad and slow metals, SciPost Physics 13, 095 (2022)

    2022

  45. [53]

    Naito and S

    M. Naito and S. Tanaka, Electrical transport properties in 2 H-Nbs 2,-NbSe2,-TaS2 and -TaSe 2, Journal of the Physical Society of Japan 51, 219 (1982)

    1982

  46. [54]

    S. Cao, C. Xu, H. Fukui, T. Manjo, Y. Dong, M. Shi, Y. Liu, C. Cao, and Y. Song, Competing charge-density wave instabilities in the kagome metal ScV 6Sn6, Nature Communications 14, 7671 (2023)

    2023

  47. [55]

    M. A. Tanatar, N. Ni, A. Thaler, S. L. Bud’ko, P. C. Can- field, and R. Prozorov, Pseudogap and its critical point in the heavily doped Ba (Fe 1−xCox)2As2 from c-axis resistivity measurements, Physical Review B 82, 134528 (2010)

    2010

Pith tools

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