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REVIEW 3 major objections 4 minor 19 references

Perspective: Exciton polarons in two-dimensional hybrid metal-halide perovskites

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Pith's one-line read In two-dimensional hybrid metal-halide perovskites, excitons are exciton polarons whose lattice dressing appears in the spectrum as a ladder of evenly spaced resonances.

desk verdict A candid, well-written Perspective that pushes the exciton-polaron hypothesis beyond the authors' earlier papers, but the abstract oversells what the evidence actually discriminates. read the letter →

arxiv 1908.03909 v2 pith:CS7PEPX5 submitted 2019-08-11 cond-mat.mtrl-sci physics.chem-ph

Ajay Ram Srimath Kandada , Carlos Silva This is my paper · ORCID
classification cond-mat.mtrl-sciphysics.chem-ph
keywords excitonpolaronstwo-dimensionalhybridperovskitesmetal-halideelectron-phononcouplingcoherentspectroscopyfinestructurephonondressingpolaronicprotection
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 perspective argues that excitons in two-dimensional hybrid metal-halide perovskites are not bare electron-hole pairs but exciton polarons: electron-hole pairs dressed by the vibrating lattice. The paper's key evidence is the absorption fine structure of (PEA)2PbI4, where at least four resonances are separated by a constant $\Delta \approx 35$–$40$ meV, and its two-dimensional coherent spectroscopy, which indicates these resonances share a common ground state and have distinct phonon dressing. If the claim is right, the exciton's effective mass, radius, and quantum dynamics are set by lattice dressing rather than by the bare electronic bands, which changes how transport, dephasing, and multiexciton interactions in this material family should be modeled. The authors explicitly allow that exchange and Rashba effects may coexist with polaronic effects, so lattice coupling is intrinsic to the exciton, not a small correction.

What carries the argument

The central object is the exciton polaron—an exciton dressed by the lattice deformation it induces—with the constant inter-peak spacing $\Delta$ offered as its spectral fingerprint. The argument is carried by three pieces of machinery: coherent two-dimensional excitation spectroscopy, which establishes that the resonances share common ground and higher-lying states; resonant impulsive stimulated Raman scattering, which resolves which phonon modes dress each exciton; and an energy-balance picture in which polaron size is set by the competition among kinetic energy, long-range ($V_L$) and short-range ($V_S$) couplings. In that picture the exciton energy as a function of the wavefunction scale $L$ is $E_p(L)=T_e/L^2 - V_L/L - V_S/L^D$, and in two dimensions the sign of $T_e - V_S$ can decide between a large and a small polaron. The experimental pair distinguishes $X_A$ from $X_B$ by their phonon coherences, while the energy-balance machinery places the material between the Fröhlich and self-trapping limits.

What would settle it

At 5 K, measure each line's intrinsic width and its biexciton binding: the vibration-copy alternative predicts one common dephasing rate and a single Poisson intensity progression, whereas the paper's claim predicts line-dependent dephasing, distinct coherent lattice vibrations, and line-dependent biexciton binding energies.

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Extended reading notes

Core claim

The paper's central claim is that the exciton in two-dimensional hybrid metal-halide perovskites is an exciton polaron: the Coulomb-bound electron-hole pair is dressed by the lattice deformation it creates, and this dressing appears intrinsically in the optical spectrum. The absorption edge of (PEA)2PbI4 shows at least four non-degenerate resonances separated by a constant $\Delta \approx 35$–$40$ meV, and the authors' coherent two-dimensional spectroscopy shows these are correlated transitions sharing a common ground state rather than vibration-copy replicas of one exciton. Each resonance behaves as a distinct exciton: the two main lines, $X_A$ and $X_B$, are dressed by different phonon modes, population transfer between them is thermally activated by a 4-meV phonon, and they display different dephasing rates and different biexciton binding (about 45–50 meV for $X_B$, weaker and partially repulsive for $X_A$). Long-range Fröhlich coupling alone cannot explain this phenomenology, so the paper places the exciton in an intermediate regime between Fröhlich and self-trapping limits, where short-range exciton-lattice coupling governs the polaron wavefunction size and therefore the exciton's effective mass, radius, and quantum dynamics. The paper is explicit that polaronic effects need not be the unique origin of the fine structure; exchange and Rashba-Dresselhaus mechanisms may coexist with them.

Load-bearing premise

The argument rests on the interpretation that the constant-spaced absorption lines are distinct exciton states sharing one ground state and that the different lattice vibrations excited under each line are intrinsic to each state; if that interpretation is wrong, the exciton-polaron claim loses its experimental foundation.

Editorial extensions

If this is right

  • Exciton effective masses and radii in 2D hybrid perovskites are set by lattice dressing, so transport and diffusion models should use polaron parameters rather than bare band masses.
  • The dominant 4-meV phonon mode actively drives $X_B \to X_A$ population transfer, so exciton relaxation kinetics should be treated as phonon-mediated nonadiabatic conversion.
  • Polaronic protection accounts for the unusually weak exciton-exciton elastic scattering and dephasing, about three orders of magnitude weaker than in monolayer transition-metal dichalcogenides, while still permitting strong biexciton binding for $X_B$.
  • The constant spacing $\Delta$ is an internal energy ladder of the exciton manifold; a complete theory of the absorption line shape must reproduce this even spacing and the distinct lattice dressing of each member.
  • Modeling 2D hybrid perovskites for optoelectronics requires treating polaronic, spin-orbit, exchange, and many-body correlations together, not simply adding phonon sidebands to a single-exciton model.

Reading between the lines

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

  • A testable extension: if the ladder is polaronic, the $\Delta$ spacing should reappear as a sideband ladder in terahertz or low-frequency coherent phonon spectra, and the spacing should shift systematically when the organic spacer or halide is changed.
  • If short-range coupling controls polaron radius, then varying the spacer cation to stiffen or soften the lattice should change exciton-exciton scattering and biexciton binding monotonically; the paper's reasoning predicts this but does not test it.
  • Because the paper allows exchange and Rashba effects to coexist, a magneto-optical experiment should split the equal-spaced ladder into a pattern that separates polaronic from spin-orbit contributions, providing a cleaner test of the polaronic component.
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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. This Perspective argues that polaronic effects are intrinsic to the exciton spectral structure of two-dimensional hybrid organic-inorganic perovskites (2D-HOIPs). The authors contend that the multiple, equally spaced resonances (Δ ≈ 35–40 meV) observed in absorption are a family of co-existing exciton states, each dressed differently by lattice phonons, placing the system in an intermediate regime between Fröhlich large polarons and self-trapped excitons. The argument synthesizes the authors' prior experimental work: two-dimensional coherent spectroscopy establishing common ground-state and biexciton coherences, resonant impulsive stimulated Raman scattering (RISRS) showing distinct phonon dressing of different resonances, temperature-dependent population transfer, and density-dependent dephasing. The paper reviews Fröhlich, Holstein, Emin, and Toyozawa polaron formalisms and proposes that short-range exciton-lattice coupling is the dominant determinant of polaron size in 2D, while long-range Fröhlich coupling is largely screened for tightly bound excitons. It concludes with a call for rigorous ab initio theory and ultrafast structural probes as future directions.

Significance. If the exciton-polaron picture holds, it would reframe the fundamental description of excitons in 2D-HOIPs—their effective mass, radius, and quantum dynamics—and would position these materials as model systems for lattice-mediated many-body correlations. The paper's strengths include a clear and well-structured synthesis of a substantial body of nonlinear spectroscopy, an honest review of competing explanations (exchange splitting, Rashba-Dresselhaus effects, vibronic progressions), and an explicit acknowledgement that a rigorous theoretical description does not yet exist. The authors also articulate concrete, falsifiable signatures of their hypothesis, such as the distinct phonon dressing of different resonances (Fig. 3) and the different biexciton binding for XA and XB (Fig. 4).

major comments (3)
  1. [Abstract; The origin of the exciton spectral structure] The abstract states that 'polaronic effects are manifested intrinsically in the exciton spectral structure,' but the body contains a substantially more cautious claim: 'we find no reason to conclude that polaronic effects are the unique contribution to the exciton lineshape, but do conclude that they are an important component of the physical phenomena.' These two statements are in tension. The evidence presented does not establish that the spectral structure is intrinsically polaronic; at most, it supports polaronic effects as one contributor alongside exchange and Rashba-type mechanisms. The abstract should be revised to present the exciton-polaron interpretation as a hypothesis with supporting evidence, not as an established conclusion.
  2. [Exciton coherent spectral signatures and dynamics; Fig. 2] The claim that a vibronic progression is ruled out is not supported by the cited two-dimensional spectroscopy. The cross-peaks between diagonal resonances and the 35 meV waiting-time oscillations in Fig. 2 are equally compatible with vibrational levels of a single electronic state: vibrational levels share a common ground state and support coherences at the vibrational frequency. The paper states 'we rule out a vibronic progression of a single exciton' (section 'Exciton spectral structure'), but the observations listed under (i) and (ii) do not discriminate between the two interpretations. The RISRS data in Fig. 3 show distinct phonon coupling for XA and XB, but this is also expected if these are different vibrational levels with different Franck-Condon overlaps. To maintain the stronger claim, the authors need to specify which observable would distinguish a family of distinct excitons from a vibronic progression, or explicitly reframe the conclusion as a working hypothesis.
  3. [Strong exciton-lattice coupling; The origin of the exciton spectral structure] The inference that the inter-peak spacing Δ is related to polaron binding energies is presented as a key motivation, but the logic is only one of proximity. The paper notes that Δ is 'in the vicinity of polaron binding energies' (citing Refs. 46–47) and that this 'led us to hypothesize that polaronic effects could contribute.' No derivation connects a single-carrier polaron binding energy to a ladder of exciton resonances separated by a constant Δ. The later section 'The origin of the exciton spectral structure' correctly identifies this as an open question, but the earlier sections and the abstract present the connection more decisively. The authors should either clarify that this is a motivating analogy rather than evidence, or provide a specific model that predicts an equally spaced multiplet from polaron formation.
minor comments (4)
  1. [Preamble; Exciton spectral structure; Exciton coherent spectral signatures and dynamics] There are several typographical errors that should be corrected: 'dyanamics' (Preamble), 'bidning' and 'bidning energy' (Exciton spectral structure), 'contrbutions' (Exciton coherent spectral signatures and dynamics), 'one immediate questions' (Strong exciton-lattice coupling), and 'Absoprtion' in the Fig. 3(b) label.
  2. [Eq. (6)] The inequality in Eq. (6) appears to have the mass ratio reversed relative to the derivation of Eq. (5). The text states the criterion for strong Fröhlich-like exciton-phonon scattering as mh/me ≫ EB/ℏωLO ≫ me/mh, but the derivation from ξe aB q0 ≫ 1 ≫ ξh aB q0 yields me/mh ≫ EB/ℏωLO ≫ mh/me (or equivalently, with electron and hole labels interchanged). Please check the indices and correct the inequality or the accompanying explanation.
  3. [Fig. 2] The labels in Fig. 2 are incomplete: the caption and panels refer to 'Feature 1', 'Feature 2', and unlabeled 'Feature' entries, making it difficult to identify which coherence features correspond to the Fourier peaks in panel (d). Please add distinct labels and a complete legend.
  4. [References] Reference 45 is listed as 'arXiv:1904.12402' without a publication venue or year; if this work has appeared in a journal, please update the citation. Reference 13 also appears as a preprint; please check its status.

Circularity Check

3 steps flagged · score 6.0 of 10

The central exciton-polaron interpretation is supported by a self-cited Wannier model that re-inserts the observed spacing Δ as a 'caveat', and by self-cited spectroscopy that does not rule out the leading vibronic alternative.

  1. ansatz smuggled in via citation [Section 'Excitons in 2D-HIOPs: The nature of polaronic coupling' (closing paragraph)]
    "However, given that a model derived from a 2D Wannier picture successfully accounts for the optical absorption lineshape of 2D-HOIPs, with the caveat that the oscillator strength due to exciton absorption must be redistributed in multiple resonances with binding energy offset by multiples of ∆,42 we consider that the localization limit is unlikely to account quantitatively for exciton polarons in these materials because the assumptions of a Frenkel Hamiltonian are not satisfied."

    The cited model (Ref. 42, the authors' own paper) is not an independent derivation of the fine structure. Its 'success' is achieved by hand-inserting the disputed empirical pattern — multiple resonances with binding energies offset by multiples of Δ — as 'the caveat.' The model therefore takes the observed constant spacing as input and returns it as output; citing it as evidence that the spectral structure consists of distinct exciton resonances, and using it to reject the localization limit, is an ansatz smuggled in through a self-citation. No polaronic calculation independently produces the 35–40 meV spacing or the number of resonances.

  2. renaming known result [Section 'The origin of the exciton spectral structure' (opening paragraph)]
    "In Ref. 42 we hypothesized that the spectral structure in Fig. 1 could reflect the importance of exciton polarons in 2D-HIOPs given that the difference in binding energy of multiple resonances is in the vicinity of the polaron binding energy, possibly reflecting distinct correlations of all possible binding combinations between electron- and hole-polarons and the unbound electrons and holes. Our report of distinct lattice dressing for XA and XB in Ref. 43 was important in establishing that polaronic effects are indeed reflected in exciton spectral structure."

    The constant inter-peak spacing Δ is the empirically observed input (Fig. 1). The exciton-polaron 'explanation' is selected post hoc because literature polaron binding energies happen to fall near Δ; the equal spacing and multiplicity of peaks are not derived from polaron theory. This is the renaming pattern: a known empirical feature reported for many 2D-HOIPs is relabeled as 'exciton polaron spectral structure,' and the supporting evidence is again the authors' own Ref. 43, which shows state-specific phonon dressing but does not derive the equal spacing.

1 more flagged steps
  1. self citation load bearing [Section 'Exciton spectral structure' (paragraph after Fig. 1)]
    "The starting point of our discussion is that we rule out a vibronic progression of a single exciton as the origin of this finestructure, and we instead claim that it arises from a family of co-existing, correlated excitons with distinct binding energy that are intrinsic to the electronic structure. The principal phenomenology stemming from our work that has led us to this view is the following: (i) we established, by means of coherent two-dimensional excitation spectroscopy, that the exciton spectral structure in Fig."

    The load-bearing discrimination between 'family of co-existing excitons' and 'vibronic progression' is justified entirely by the authors' own prior papers (Refs. 41–45). The cited 2D-spectroscopy facts — cross-peaks to a common ground state and coherences oscillating at 35 meV — are exactly what a vibrational progression of a single exciton would also produce, since vibrational levels share a common electronic ground state and their spacing is the vibrational frequency. The evidence therefore does not rule out the alternative; the conclusion is imported from the self-cited interpretation rather than derived from the data.

full rationale

This is a perspective paper, not a formal derivation, so the circularity is in the interpretive support rather than in a closed equation chain. The strongest circular step is the Wannier-model citation: Ref. 42 'successfully accounts' for the absorption lineshape only after the observed multiple resonances offset by Δ are inserted as a caveat, making the model's output its own input. A second, related move renames the well-known equally spaced multipeak feature as 'exciton polaron spectral structure' because literature polaron binding energies lie near Δ, which is post-hoc matching rather than prediction. Third, the pivotal exclusion of a vibronic progression rests on the authors' own 2D-spectroscopy observations that are equally compatible with a vibrational progression of one exciton; the body itself concedes 'we find no reason to conclude that polaronic effects are the unique contribution' and that 'further work... will be necessary to answer this question rigorously,' while the abstract states the polaronic manifestation as if established. The paper does contain independent empirical content — RISRS phonon spectra, biexciton binding energies, and density- and temperature-dependent dephasing — so this is not an 8 or 10; the abstract's overstatement and the self-cited model that installs Δ give a partial circularity score of 6.

Assumptions & free parameters 1 free parameters · 4 assumptions · 0 invented entities

The central claim does not rest on newly introduced free parameters or invented entities; it rests on measured quantities (Δ, phonon energies, activation energy) and on assumptions from polaron theory. The only fitted number in the present text is the activation energy; the other inputs come from prior literature and the authors' previous measurements.

free parameters (1)
  • Activation energy for XB→XA transfer = ~4 meV
    Obtained from temperature-dependent population transfer kinetics (Section 'Strong exciton-lattice coupling'); used to identify the 4-meV in-plane phonon mode as the driver of nonadiabatic inter-exciton conversion.
assumptions (4)
  • domain assumption Displaced harmonic oscillator (potential energy surface) model applies to the coupled exciton-phonon system despite lattice softness and anharmonicity.
    Invoked in Section 'Strong exciton-lattice coupling' to interpret RISRS beating maps (Fig. 3(a)); the authors explicitly acknowledge the lattice is soft and anharmonic.
  • domain assumption Emin's polaron energy functional Ep(L) with short- and long-range terms captures the polaron size regimes in 2D.
    Used in Section 'Polarons' to argue that short-range interactions dominate in 2D lattices, supporting the paper's claim about the relevant coupling mechanism.
  • domain assumption Exciton binding energy EB in 2D-HOIPs is large enough (EB >> ħωLO) and electron/hole masses are similar enough that Fröhlich-like exciton-phonon scattering is negligible (Eq. 6).
    Used to motivate moving beyond the Fröhlich picture and toward short-range coupling; stated in Section 'Exciton-phonon scattering problem'.
  • domain assumption The 2D Wannier exciton model with redistributed oscillator strength adequately describes the absorption lineshape of 2D-HOIPs.
    Mentioned in Section 'Excitons in 2D-HIOPs' as a caveat to the localization limit; the paper relies on this to argue the fine structure is not a Frenkel self-trapped progression.

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Cite this review

Pith. "Pith review of Perspective: Exciton polarons in two-dimensional hybrid metal-halide perovskites." pith.science (2026). https://pith.science/paper/CS7PEPX5

@misc{pith2026190803909,
  author       = {Pith},
  title        = {Pith review of: Perspective: Exciton polarons in two-dimensional hybrid metal-halide perovskites},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/CS7PEPX5}},
  note         = {Machine review of arXiv:1908.03909}
}
read the original abstract

While polarons --- charges bound to a lattice deformation induced by electron-phonon coupling --- are primary photoexcitations at room temperature in bulk metal-halide hybrid organic-inorganic perovskites (HOIP), excitons --- Coulomb-bound el\-ectron-hole pairs --- are the stable quasi-particles in their two-dimensional (2D) analogues. Here we address the fundamental question: are polaronic effects consequential for excitons in 2D-HIOPs? Based on our recent work, we argue that polaronic effects are manifested intrinsically in the exciton spectral structure, which is comprised of multiple non-degenerate resonances with constant inter-peak energy spacing. We highlight our own measurements of population and dephasing dynamics that point to the apparently deterministic role of polaronic effects in excitonic properties. We contend that an interplay of long-range and short-range exciton-lattice couplings give rise to exciton polarons, a character that fundamentally establishes their effective mass and radius, and consequently, their quantum dynamics. Finally, we highlight opportunities for the community to develop the rigorous description of exciton polarons in 2D-HIOPs to advance their fundamental understanding as model systems for condensed-phase materials in which lattice-mediated correlations are fundamental to their physical properties.

Figures

Figures reproduced from arXiv: 1908.03909 by the authors.

Figure 1
Figure 1. Crystal structure of a prototypical 2D perovskite: phenylethylammonium lead [PITH_FULL_IMAGE:figures/full_fig_p005_1.png] view at source ↗
Figure 2
Figure 2. (a) Total correlation 2D coherent excitation spectrum taken at room temperature [PITH_FULL_IMAGE:figures/full_fig_p007_2.png] view at source ↗
Figure 3
Figure 3. (a) Schematic of potential energy surfaces for exciton polarons along generic [PITH_FULL_IMAGE:figures/full_fig_p008_3.png] view at source ↗
Figures from the paper (2 more)
Figure 4
Figure 4. Figure 4: Real part of the two-quantum non-rephasing 2D coherent excitation spectrum of [PITH_FULL_IMAGE:figures/full_fig_p011_4.png]
Figure 5
Figure 5. Figure 5: Phase diagram showing stability of free (F) and self-trapped (S) carriers in the [PITH_FULL_IMAGE:figures/full_fig_p017_5.png]

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Reference graph

Works this paper leans on

19 extracted references · 19 canonical work pages

  1. [1]

    (1) Stranks,S.D.; Snaith,H.J.Metal-halideperovskitesforphotovoltaicandlight-emitting devices. Nat. Nanotech. 2015, 10,

    work page 2015

  2. [18]

    D.; Reid, A

    (84) Konstantinova, T.; Rameau, J. D.; Reid, A. H.; Abdurazakov, O.; Wu, L.; Li, R.; Shen, X.; Gu, G.; Huang, Y.; Rettig, L. et al. Nonequilibrium electron and lattice dynamics of strongly correlated Bi2Sr2CaCu2O8+δ single crystals. Sci. Adv. 2018, 4, eaap7427. 34 (85) Stern, M. J.; de Cotret, L. P. R.; Otto, M. R.; Chatelain, R. P.; Boisvert, J.-P.; Sut-...

    work page 2018

  3. [60]

    Lattice vibrations and dynamic disorder in two-dimensional hybrid lead-halide perovskites

    (66) Silver, S.; Yin, J.; Li, H.; Brédas, J. L.; Kahn, A. Characterization of the Valence and Conduction Band Levels ofn = 1 2D Perovskites: A Combined Experimental and Theoretical Investigation.Adv. Energy Mater.2018, 8, 1703468. (67) Toyozawa,Y.Dynamicsofexcitonsindeformablelattice. J. Lumin.1981, 24-25, 23–30. 32 (68) Cortecchia, D.; Neutzner, S.; Srim...

    work page Pith review arXiv 2018

  4. [103]

    (65) Ueta, M.; Kanzaki, H.; Kobayashi, K.; Toyozawa, Y.; Hanamura, E.Excitonic processes in solids; Springer Science & Business Media, 2012; Vol

    work page 2012

  5. [309]

    S.Polarons in advanced materials; Springer Science & Business Media, 2008; Vol

    (64) Alexandrov, A. S.Polarons in advanced materials; Springer Science & Business Media, 2008; Vol

    work page 2008

  6. [381]

    (49) Yang, X.; Bittner, E. R. Intramolecular charge-and energy-transfer rates with reduced modes: Comparison to Marcus theory for donor–bridge–acceptor systems.J. Phys. Chem. A 2014, 118, 5196–5203. (50) Siemens, M. E.; Moody, G.; Li, H.; Bristow, A. D.; Cundiff, S. T. Resonance lineshapes in two-dimensional Fourier transform spectroscopy.Optics Express 20...

    work page 2014

  7. [391]

    R.; Petrozza, A

    (2) Srimath Kandada, A. R.; Petrozza, A. Photophysics of hybrid lead halide perovskites: The role of microstructure.Acc. Chem. Res.2016, 49, 536–544. (3) Egger, D. A.; Bera, A.; Cahen, D.; Hodes, G.; Kirchartz, T.; Kronik, L.; Lovrincic, R.; Rappe, A. M.; Reichman, D. R.; Yaffe, O. What remains unexplained about the prop- erties of halide perovskites?Adv. ...

    work page 2016

  8. [582]

    (19) Saparov, B.; Mitzi, D. B. Organic–inorganic perovskites: structural versatility for func- tional materials design.Chem. Rev. 2016, 116, 4558–4596. (20) Even, J.; Pedesseau, L.; Katan, C. Understanding quantum confinement of charge carriers in layered 2D hybrid perovskites.ChemPhysChem 2014, 15, 3733–3741. (21) Gauthron, K.; Lauret, J.; Doyennette, L.;...

    work page 2016

Show all 19 references
  1. [619]

    B.; Balents, L

    (87) Witczak-Krempa, W.; Chen, G.; Kim, Y. B.; Balents, L. Correlated Quantum Phe- nomena in the Strong Spin-Orbit Regime. Ann. Rev. Conden. Mat. Phys. 2014, 5, 57–82. 35

    2014

  2. [655]

    Polaron physics in 2D and 3D.Physica Scripta 1989, 1989,

    (63) Devreese, J. Polaron physics in 2D and 3D.Physica Scripta 1989, 1989,

    1989

  3. [871]

    B.; Riley, D

    (77) Todd, S. B.; Riley, D. B.; Binai-Motlagh, A.; Clegg, C.; Ramachandran, A.; March, S. A.; Hill, I. G.; Stoumpos, C. C.; Kanatzidis, M. G.; Yu, Z.-G. et al. arXiv:1807.10803[cond-mat.mtrl-sci]. (78) Zhai, Y.; Baniya, S.; Zhang, C.; Li, J.; Haney, P.; Sheng, C.-X.; Ehrenfreu...

    2017 arXiv

  4. [1175]

    Z.; Egger, D

    (15) Yaffe, O.; Guo, Y.; Tan, L. Z.; Egger, D. A.; Hull, T.; Stoumpos, C. C.; Zheng, F.; 26 Heinz, T. F.; Kronik, L.; Kanatzidis, M. G. et al. Local polar fluctuations in lead halide perovskite crystals.Phys. Rev. Lett.2017, 118, 136001. (16) Bonn, M.; Miyata, K.; Hendry, E.; Zh...

    2017

  5. [1749]

    H.; Verdi, C.; Poncé, S.; Giustino, F

    (81) Sio, W. H.; Verdi, C.; Poncé, S.; Giustino, F. Polarons from First Principles, without Supercells. Phys. Rev. Lett.2019, 122, 246403. (82) Sio, W. H.; Verdi, C.; Poncé, S.; Giustino, F. Ab initio theory of polarons: Formalism and applications.Phys. Rev. B2019, 99, 235139....

    2019

  6. [1971]

    J.; Valverde-Chavez, D

    (13) Lan, Y.; Dringoli, B. J.; Valverde-Chavez, D. A.; Ponseca Jr, C. S.; Sutton, M.; He, Y.; Kanatzidis, M. G.; Cooke, D. G. arXiv:1812.07752 [cond-mat.mtrl-sci]. (14) Guo, Y.; Yaffe, O.; Hull, T. D.; Owen, J. S.; Reichman, D. R.; Brus, L. E. Dynamic emission Stokes shift and ...

    2019 arXiv

  7. [2010]

    (38) Ema, K.; Umeda, K.; Toda, M.; Yajima, C.; Arai, Y.; Kunugita, H.; Wolverson, D.; Davies,J.J.Hugeexchangeenergyandfinestructureofexcitonsinanorganic-inorganic quantum well material.Phys. Rev. B2006, 73, 241310(R). (39) Takagi, H.; Kunugita, H.; Ema, K. Influence of the image...

    2013 arXiv

  8. [2254]

    M.; Kagan, C

    (24) Straus,D.B.; HurtadoParra,S.; Iotov,N.; Gebhardt,J.; Rappe,A.M.; Subotnik,J.E.; Kikkawa, J. M.; Kagan, C. R. Direct observation of electron–phonon coupling and slow vibrational relaxation in organic–inorganic hybrid perovskites.J. Am. Chem. Soc. 2016, 138, 13798–13801. (2...

    2016

  9. [5109]

    Dependence of ir absorption in YBa2Cu3O7- y on the oxygen content

    (61) Ruani, G.; Taliani, C.; Zamboni, R.; Cittone, D.; Matacotta, F. Dependence of ir absorption in YBa2Cu3O7- y on the oxygen content. Physica C: Superconductivity 1988, 153, 645–646. (62) Johnson, E.; Larsen, D. Polaron induced anomalies in the interband magnetoabsorption of...

    1988

  10. [5919]

    L.; Tejeda, A.; Even, J.; Lauret, J.-S

    (22) Diab, H.; Trippe-Allard, G.; Lédée, F.; Jemli, K.; Vilar, C.; Bouchez, G.; Jacques, V. L.; Tejeda, A.; Even, J.; Lauret, J.-S. et al. Narrow linewidth excitonic emission in organic– inorganicleadiodideperovskitesinglecrystals. J. Phys. Chem. Lett2016,7, 5093–5100. (23) Bl...

    2018

  11. [8315]

    W.; Horng, J.; Ruth, H

    (52) Martin, E. W.; Horng, J.; Ruth, H. G.; Paik, E.; Wentzel, M.-H.; Deng, H.; Cun- diff, S. T. arXiv:1810.09834 [cond-mat.mtrl-sci]. (53) Zhu, X.-Y.; Podzorov, V. Charge carriers in hybrid organic–inorganic lead halide per- ovskites might be protected as large polarons.J. Phy...

    arXiv

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