REVIEW 2 major objections 2 minor 1 cited by
Subgap Linear Thermoelectricity in Superconducting Quantum Hall Systems
T0 review · 2 major / 2 minor · reviewed 2026-06-26 · grok-4.3
Pith's one-line read An integer quantum Hall setup proximized by superconductors exhibits subgap linear thermoelectric effects when triplet correlations are present.
desk verdict The paper derives an analytical subgap linear Seebeck coefficient of order k_B/e from Andreev processes in a proximized QH edge, but only when triplet correlations dominate. read the letter →
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
The reading
What carries the argument
Andreev-mediated Seebeck effect induced by triplet superconducting correlations in spin-polarized quantum Hall edge states.
What would settle it
Measuring a zero Seebeck coefficient in an otherwise identical setup where either spin polarization or triplet pairing is suppressed.
Extended reading notes
Core claim
In superconducting quantum Hall systems, triplet superconducting correlations enable a subgap Seebeck effect mediated by Andreev processes in the linear-response regime, with the coefficient reaching order k_B/e in the plateau center, provided spin polarization is present.
Load-bearing premise
Triplet superconducting correlations can be induced in the quantum Hall edge states such that they dominate over other pairing channels.
Editorial extensions
If this is right
- The Seebeck coefficient reaches values on the order of k_B/e in the middle of the quantum Hall plateau.
- Both triplet correlations and spin polarization are essential for the thermoelectric effect.
- The effect persists despite the linear band dispersion of the edge states.
- The response can be characterized as a function of Hamiltonian parameters and temperature regime.
Reading between the lines
- This mechanism could allow thermoelectric generation at temperatures well below the superconducting gap without exciting quasiparticles.
- Similar subgap thermoelectric responses might be engineered in other hybrid topological-superconducting systems.
- Device applications would require precise control over the induced pairing symmetry to favor the triplet channel.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper claims that an integer quantum Hall edge proximitized by a superconductor can exhibit a nonzero linear-response Seebeck coefficient of order k_B/e inside the plateau when triplet superconducting correlations are present. It devises a minimal setup, analytically demonstrates that both triplet correlations and spin polarization are required for an Andreev-mediated thermoelectric effect despite linear edge dispersion, and characterizes the dependence on Hamiltonian parameters and temperature.
Significance. If the analytical derivation is sound and the minimal setup permits triplet dominance, the result would be significant for mesoscopic superconductivity: it identifies a concrete mechanism for subgap linear thermoelectricity in chiral hybrid systems that relies on unconventional pairing. The analytical (parameter-free in the stated sense) demonstration and the explicit necessity of triplet plus spin polarization are strengths that could guide experiments.
major comments (2)
- [§2] §2 (minimal setup and Hamiltonian): the proximity-induced pairing term must be written explicitly (including the relative amplitudes of triplet vs. singlet channels and any spin-polarization or Zeeman factors) so that the claim of triplet dominance can be verified; without this, it is impossible to confirm that competing channels remain subdominant and that the finite Andreev Seebeck coefficient survives.
- [Analytical derivation] Analytical derivation of the Seebeck coefficient (main text, around the linear-response formulas): the calculation should explicitly track how the linear dispersion is overcome by the triplet Andreev processes and confirm that the result is not an artifact of any auxiliary fitting parameter or self-consistent assumption; any suppression mechanism for singlet components must be shown to be robust.
minor comments (2)
- [Figures] Figure captions and axis labels should explicitly state the temperature regime and the value of the spin-polarization parameter used.
- [Results section] A short table summarizing the dependence of the Seebeck coefficient on the key Hamiltonian parameters (pairing amplitudes, Zeeman field) would improve readability.
Simulated Author's Rebuttal
We thank the referee for their careful reading of the manuscript and for the constructive comments. We address each major point below and will revise the manuscript accordingly to improve clarity and completeness.
read point-by-point responses
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Referee: [§2] §2 (minimal setup and Hamiltonian): the proximity-induced pairing term must be written explicitly (including the relative amplitudes of triplet vs. singlet channels and any spin-polarization or Zeeman factors) so that the claim of triplet dominance can be verified; without this, it is impossible to confirm that competing channels remain subdominant and that the finite Andreev Seebeck coefficient survives.
Authors: We agree that the explicit form of the proximity-induced pairing term is needed for verification. In the revised manuscript we will write the full pairing Hamiltonian in §2, specifying the relative amplitudes of the triplet and singlet channels together with the spin-polarization (Zeeman) factors. We will also add a short discussion of parameter regimes in which triplet components dominate, confirming that the finite Andreev Seebeck coefficient remains robust. revision: yes
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Referee: [Analytical derivation] Analytical derivation of the Seebeck coefficient (main text, around the linear-response formulas): the calculation should explicitly track how the linear dispersion is overcome by the triplet Andreev processes and confirm that the result is not an artifact of any auxiliary fitting parameter or self-consistent assumption; any suppression mechanism for singlet components must be shown to be robust.
Authors: We will expand the analytical derivation in the main text to show each step of the linear-response calculation, explicitly demonstrating how the triplet Andreev scattering overcomes the linear dispersion without introducing auxiliary fitting parameters. The derivation will be presented in a fully analytic, parameter-free manner within the stated approximations. We will also include an explicit argument for the robustness of singlet suppression under the triplet-dominant conditions already identified in the model. revision: yes
Circularity Check
No circularity: analytical derivation from triplet correlations in minimal setup
full rationale
The paper's central result is an analytical demonstration that triplet superconducting correlations plus spin polarization produce a nonzero Andreev-mediated Seebeck coefficient inside the QH plateau, despite linear edge dispersion. The abstract frames this as a direct consequence of the devised minimal Hamiltonian rather than a fit, renaming, or reduction to prior self-citation. No quoted equations or steps reduce the predicted thermoelectric response to a parameter fitted from the same data or to an unverified self-citation chain. The derivation is therefore self-contained against the stated Hamiltonian assumptions.
Assumptions & free parameters
Cite this review
Pith. "Pith review of Subgap Linear Thermoelectricity in Superconducting Quantum Hall Systems." pith.science (2026). https://pith.science/paper/JR2O6IUD
@misc{pith2026260621599,
author = {Pith},
title = {Pith review of: Subgap Linear Thermoelectricity in Superconducting Quantum Hall Systems},
year = {2026},
howpublished = {\url{https://pith.science/paper/JR2O6IUD}},
note = {Machine review of arXiv:2606.21599}
}
abstract
We show that an integer quantum Hall setup proximized by superconductors can exhibit subgap thermoelectric effects in the linear-response regime when triplet superconducting correlations are present. We devise a minimal setup that enables a nonzero Seebeck effect mediated by Andreev processes and predict that the corresponding Seebeck coefficient can reach values on the order of $k_B/e$ in the middle of the quantum Hall plateau. We analytically show that both triplet correlations and spin polarization are essential for the emergence of the thermoelectric effect, which arises despite the linear band dispersion of the edge states. We characterize the dependence of the thermoelectric response on the Hamiltonian parameters and the system's temperature regime.
Figures
Figures from the paper (5 more)
Forward citations
Cited by 1 Pith paper
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Bipolar Thermoelectric Superconducting Quantum Devices
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Reference graph
Works this paper leans on
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[1]
Invariance under triplet vector rotations aroundˆzaxis As we noted in the main text in the discussion after Eq. (5), the transport properties of the system do not depend on the orientation of the triplet vector⃗ v∆, which is characterized by its azimuthal and zenith orientation anglesφand θ, around the magnetic field directionˆz. In fact, the triplet azim...
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[2]
(2) and (6) of the main text, in the limit˜v∆ →0, i.e
Oscillation damping of the transport coefficients and˜v∆ = 0case Notably, according to Eqs. (2) and (6) of the main text, in the limit˜v∆ →0, i.e. only singlet superconductivity, the conductanceG Σ remains finite and oscillates as[1−cos 2π ˜L ], without any damping. This result is consistent with the expected oscillation of the conductance due to the alte...
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[3]
In panel (a), we show the integrand for different lengths, but all in the same position with respect to the period structure1. In the other rows of the panel (a), we instead see why there is damping: whenv∆ ̸= 0, the sum of the Andreev probabilitiesP A 21(E) +P A 22(E)shows increasing energy oscillations with increasing˜v∆ or ˜L. The same happens for the ...
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[4]
5, we show the Seebeck coefficient, as in Fig
Angleθand phaseψdependences, with and without Zeeman splitting In Fig. 5, we show the Seebeck coefficient, as in Fig. 3 of the main text, but for zero Zeeman splitting. We do not analyze this case in the main text because this limit, while theoretically interesting, cannot be easily realized in an experiment, given that the Zeeman term is required to have...
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[5]
with a non-trivial phase difference between different spatial triplet components, aiming at assessing whether this changes the TE phenomenol- ogy significantly
Non-unitary triplet Finally, we consider the thermopower in the more general case of a non-unitary triplet, i.e. with a non-trivial phase difference between different spatial triplet components, aiming at assessing whether this changes the TE phenomenol- ogy significantly. In principle, the singlet (ψ) and the three triplet SC phases (αx, αy, αz) could be...
-
[6]
Benenti, G
G. Benenti, G. Casati, K. Saito, and R. S. Whitney, Phys. Rep.694, 1 (2017)
2017
-
[7]
Zhang, K
Q. Zhang, K. Deng, L. Wilkens, H. Reith, and K. Nielsch, Nat. Electron.5, 333 (2022)
2022
-
[8]
Blasi, F
G. Blasi, F. Taddei, L. Arrachea, M. Carrega, and A. Braggio, Phys. Rev. B103, 235434 (2021)
2021
Show all 85 references
-
[9]
Battisti, G
S. Battisti, G. De Simoni, L. Chirolli, A. Braggio, and F. Giazotto, Phys. Rev. Res.6, L012022 (2024)
2024
-
[10]
X. Cai, A. B. Sushkov, R. J. Suess, M. M. Jadidi, G. S. Jenkins, L. O. Nyakiti, R. L. Myers-Ward, S. Li, J. Yan, D. K. Gaskill, T. E. Murphy, H. D. Drew, and M. S. Fuhrer, Nat. Nanotechnol.9, 814 (2014)
2014
-
[11]
M. B. Lundeberg, Y. Gao, A. Woessner, C. Tan, P. Alonso-González, K. Watanabe, T. Taniguchi, J. Hone, R. Hillenbrand, and F. H. L. Koppens, Nat. Mater.16, 204 (2017)
2017
-
[12]
Z. Wang, M. Guo, H.-A. Zhou, L. Zhao, T. Xu, R. Tomasello, H. Bai, Y. Dong, S.-G. Je, W. Chao, H.-S. Han, S. Lee, K.-S. Lee, Y. Yao, W. Han, and others, Nat. Electron.3, 672 (2020)
2020
-
[13]
J. H. Mateos, L. Tosi, A. Braggio, F. Taddei, and L. Arrachea, Phys. Rev. B110, 075415 (2024)
2024
-
[14]
Yang and B
X. Yang and B. Skinner, arXiv:2505.00086 (2025)
2025
-
[15]
Sánchez and R
D. Sánchez and R. López, Comptes Rendus Phys.17, 1060 (2016)
2016
-
[16]
Arrachea, A
L. Arrachea, A. Braggio, P. Burset, E. J. H. Lee, A. Levy Yeyati, and R. Sánchez, Ann. Phys.537, e00197 (2025)
2025
-
[17]
Dutta, arXiv:2503.24327 (2025)
P. Dutta, arXiv:2503.24327 (2025)
2025
-
[18]
Marchegiani, A
G. Marchegiani, A. Braggio, and F. Giazotto, Phys. Rev. Lett.124, 106801 (2020)
2020
-
[19]
Marchegiani, A
G. Marchegiani, A. Braggio, and F. Giazotto, Phys. Rev. B101, 214509 (2020)
2020
-
[20]
Germanese, F
G. Germanese, F. Paolucci, G. Marchegiani, A. Braggio, and F. Giazotto, Nat. Nanotechnol.17, 1084 (2022)
2022
-
[21]
Bernazzani, G
L. Bernazzani, G. Marchegiani, F. Giazotto, S. Roddaro, and A. Braggio, Phys. Rev. Appl.19, 044017 (2023)
2023
-
[22]
F. S. Bergeret, M. Silaev, P. Virtanen, and T. T. Heikkilä, Rev. Mod. Phys.90, 041001 (2018)
2018
-
[23]
Machon, M
P. Machon, M. Eschrig, and W. Belzig, New J. Phys.16, 073002 (2014)
2014
-
[24]
Machon, M
P. Machon, M. Eschrig, and W. Belzig, Phys. Rev. Lett.110, 047002 (2013)
2013
-
[25]
Ozaeta, P
A. Ozaeta, P. Virtanen, F. S. Bergeret, and T. T. Heikkilä, Phys. Rev. Lett.112, 057001 (2014)
2014
-
[26]
Kolenda, P
S. Kolenda, P. Machon, D. Beckmann, and W. Belzig, Beilstein J. Nanotechnol.7, 1579 (2016)
2016
-
[27]
Kolenda, M
S. Kolenda, M. J. Wolf, and D. Beckmann, Phys. Rev. Lett.116, 097001 (2016)
2016
-
[28]
González-Ruano, D
C. González-Ruano, D. Caso, J. A. Ouassou, C. Tiusan, Y. Lu, J. Linder, and F. G. Aliev, Phys. Rev. Lett.130, 237001 (2023)
2023
-
[29]
C. I. L. de Araujo, P. Virtanen, M. Spies, C. González-Orellana, S. Kerschbaumer, M. Ilyn, C. Rogero, T. T. Heikkilä, F. Giazotto, and E. Strambini, Nat. Commun.15, 4823 (2024)
2024
-
[30]
Blasi, F
G. Blasi, F. Taddei, L. Arrachea, M. Carrega, and A. Braggio, Phys. Rev. Lett.124, 227701 (2020)
2020
-
[31]
Trocha, T
P. Trocha, T. Jonckheere, J. Rech, and T. Martin, Sci. Rep.15, 3068 (2025)
2025
-
[32]
Guarcello, A
C. Guarcello, A. Braggio, F. Giazotto, and R. Citro, Phys. Rev. B108, L100511 (2023)
2023
-
[33]
Hwang, P
S.-Y. Hwang, P. Burset, and B. Sothmann, Phys. Rev. B98, 161408 (2018)
2018
-
[34]
A. N. Singh, B. Bhandari, A. Braggio, F. Giazotto, and A. N. Jordan, Phys. Rev. Lett.133, 256002 (2024)
2024
-
[35]
Dutta, K
P. Dutta, K. R. Alves, and A. M. Black-Schaffer, Phys. Rev. B102, 094513 (2020)
2020
-
[36]
Savander, S
T. Savander, S. Tamura, C. Flindt, Y. Tanaka, and P. Burset, Phys. Rev. Res.2, 043388 (2020)
2020
-
[37]
Jonson and S
M. Jonson and S. M. Girvin, Phys. Rev. B29, 1939 (1984)
1939
-
[38]
Fletcher, M
R. Fletcher, M. D’Iorio, W. T. Moore, and R. Stoner, J. Phys. C Solid State Phys.21, 2681 (1988)
1988
-
[39]
Yang and B
K. Yang and B. I. Halperin, Phys. Rev. B79, 115317 (2009)
2009
-
[40]
Barlas and K
Y. Barlas and K. Yang, Phys. Rev. B85, 195107 (2012)
2012
-
[41]
Kobayakawa, A
S. Kobayakawa, A. Endo, and Y. Iye, J. Phys. Soc. Jpn.82, 053702 (2013)
2013
-
[42]
M. Real, D. Gresta, C. Reichl, J. Weis, A. Tonina, P. Giudici, L. Arrachea, W. Wegscheider, and W. Dietsche, Phys. Rev. Appl.14, 034019 (2020)
2020
-
[43]
D. N. Sheng and L. Fu, Phys. Rev. B101, 241101 (2020)
2020
-
[44]
Braggio, M
A. Braggio, M. Carrega, B. Sothmann, and R. Sánchez, Phys. Rev. Res.6, L012049 (2024)
2024
-
[45]
Giazotto, F
F. Giazotto, F. Taddei, M. Governale, R. Fazio, and F. Beltram, New J. Phys.9, 439 (2007)
2007
-
[46]
C. Panu, F. Taddei, M. Polini, and A. Yacoby, Phys. Rev. B110, L161407 (2024)
2024
-
[47]
L. Zhao, T. F. Q. Larson, Z. Iftikhar, J. Chiles, K. Watanabe, T. Taniguchi, F. Amet, and G. Finkelstein, Phys. Rev. Lett. 134, 066001 (2025)
2025
-
[48]
J. T. McCourt, J. Chiles, C.-C. Chen, K. Watanabe, T. Tanaguchi, F. Amet, and G. Finkelstein, arXiv:2510.09798 (2025)
2025
-
[49]
J. Wang, S. Ahadi, B. Liu, L. Balents, S. Munyan, and S. Stemmer, Nat. Commun. 10.1038/s41467-026-74064-2 (2026)
2026 doi
-
[50]
L. Zhao, E. G. Arnault, A. Bondarev, A. Seredinski, T. F. Q. Larson, A. W. Draelos, H. Li, K. Watanabe, T. Taniguchi, F. Amet, H. U. Baranger, and G. Finkelstein, Nat. Phys.16, 862 (2020)
2020
-
[51]
Vignaud, D
H. Vignaud, D. Perconte, W. Yang, B. Kousar, E. Wagner, F. Gay, K. Watanabe, T. Taniguchi, H. Courtois, Z. Han, H. Sellier, and B. Sacépé, Nature624, 545 (2023)
2023
-
[52]
D. I. Indolese, P. Karnatak, A. Kononov, R. Delagrange, R. Haller, L. Wang, P. Makk, K. Watanabe, T. Taniguchi, and C. Schönenberger, Nano Lett.20, 7129 (2020). 11
2020
-
[53]
L. Zhao, Z. Iftikhar, T. F. Q. Larson, E. G. Arnault, K. Watanabe, T. Taniguchi, F. Amet, and G. Finkelstein, Phys. Rev. Lett.131, 176604 (2023)
2023
-
[54]
L. Zhao, E. G. Arnault, T. F. Q. Larson, K. Watanabe, T. Taniguchi, F. Amet, and G. Finkelstein, Phys. Rev. B109, 115416 (2024)
2024
-
[55]
D. Wang, E. J. Telford, A. Benyamini, J. Jesudasan, P. Raychaudhuri, K. Watanabe, T. Taniguchi, J. Hone, C. R. Dean, and A. N. Pasupathy, Nano Lett.21, 8229 (2021)
2021
-
[56]
Ö. Gül, Y. Ronen, S. Y. Lee, H. Shapourian, J. Zauberman, Y. H. Lee, K. Watanabe, T. Taniguchi, A. Vishwanath, A. Yacoby, and P. Kim, Phys. Rev. X12, 021057 (2022)
2022
-
[57]
Barrier, M
J. Barrier, M. Kim, R. K. Kumar, N. Xin, P. Kumaravadivel, L. Hague, E. Nguyen, A. I. Berdyugin, C. Moulsdale, V. V. Enaldiev, J. R. Prance, F. H. L. Koppens, R. V. Gorbachev, K. Watanabe, T. Taniguchi, and others, Nature628, 741 (2024)
2024
-
[58]
Hatefipour, J
M. Hatefipour, J. J. Cuozzo, I. Levy, W. M. Strickland, D. Langone, E. Rossi, and J. Shabani, Phys. Rev. B109, 035430 (2024)
2024
-
[59]
Hatefipour, J
M. Hatefipour, J. J. Cuozzo, J. Kanter, W. M. Strickland, C. R. Allemang, T.-M. Lu, E. Rossi, and J. Shabani, Nano Lett. 22, 6173 (2022)
2022
-
[60]
Jang, G.-H
S. Jang, G.-H. Park, K. Watanabe, T. Taniguchi, and G.-H. Lee, Phys. Rev. B112, L241401 (2025)
2025
-
[61]
G.-H. Lee, D. K. Efetov, W. Jung, L. Ranzani, E. D. Walsh, T. A. Ohki, T. Taniguchi, K. Watanabe, P. Kim, D. Englund, and K. C. Fong, Nature586, 42 (2020)
2020
-
[62]
M. P. Anantram and S. Datta, Phys. Rev. B53, 16390 (1996)
1996
-
[63]
Giazotto, M
F. Giazotto, M. Governale, U. Zülicke, and F. Beltram, Phys. Rev. B72, 054518 (2005)
2005
-
[64]
I. M. Khaymovich, N. M. Chtchelkatchev, I. A. Shereshevskii, and A. S. Mel’nikov, Europhys. Lett.91, 17005 (2010)
2010
-
[65]
J. A. M. van Ostaay, A. R. Akhmerov, and C. W. J. Beenakker, Phys. Rev. B83, 195441 (2011)
2011
-
[66]
Sekera, C
T. Sekera, C. Bruder, and R. P. Tiwari, Phys. Rev. B98, 195418 (2018)
2018
-
[67]
Beconcini, M
M. Beconcini, M. Polini, and F. Taddei, Phys. Rev. B97, 201403 (2018)
2018
-
[68]
T. H. Galambos, F. Ronetti, B. Hetényi, D. Loss, and J. Klinovaja, Phys. Rev. B106, 075410 (2022)
2022
-
[69]
A. L. R. Manesco, I. M. Flór, C.-X. Liu, and A. R. Akhmerov, SciPost Phys. Core5, 045 (2022)
2022
-
[70]
David, J
A. David, J. S. Meyer, and M. Houzet, Phys. Rev. B107, 125416 (2023)
2023
-
[71]
V. D. Kurilovich, Z. M. Raines, and L. I. Glazman, Nat. Commun.14, 2237 (2023)
2023
-
[72]
Blasi, G
G. Blasi, G. Haack, V. Giovannetti, F. Taddei, and A. Braggio, Phys. Rev. Res.5, 033142 (2023)
2023
-
[73]
V. D. Kurilovich and L. I. Glazman, Phys. Rev. X13, 031027 (2023)
2023
-
[74]
A. B. Michelsen, P. Recher, B. Braunecker, and T. L. Schmidt, Phys. Rev. Res.5, 013066 (2023)
2023
-
[75]
Arrachea, A
L. Arrachea, A. L. Yeyati, and C. A. Balseiro, Phys. Rev. B109, 064519 (2024)
2024
- [76]
-
[77]
Datta,Electronic Transport in Mesoscopic Systems(Cambridge University Press, Cambridge, 1995)
S. Datta,Electronic Transport in Mesoscopic Systems(Cambridge University Press, Cambridge, 1995)
1995
-
[78]
Mazza, R
F. Mazza, R. Bosisio, G. Benenti, V. Giovannetti, R. Fazio, and F. Taddei, New J. Phys.16, 085001 (2014)
2014
-
[79]
C. J. Lambert and R. Raimondi, J. Phys. Condens. Matter10, 901 (1998)
1998
-
[80]
Ya. M. Blanter and M. Büttiker, Phys. Rep.336, 1 (2000)
2000
-
[81]
Jacquod, R
P. Jacquod, R. S. Whitney, J. Meair, and M. Büttiker, Phys. Rev. B86, 155118 (2012)
2012
-
[82]
[59, 62, 65, 74, 75], for details on the calculations and comple- mentary results
See Supplemental Material at [URL], which includes Refs. [59, 62, 65, 74, 75], for details on the calculations and comple- mentary results
-
[83]
Sigrist, AIP Conf
M. Sigrist, AIP Conf. Proc.789, 165 (2005)
2005
-
[84]
In this effective formalismhv/2∆takes the role of a SC coherence length but, in a more microscopical approach, it is also connected with small filling factor changes in the quantum Hall plateau [65]
-
[85]
Notably, in such a system, maximizing the thermoelectric coefficientα21 does not correspond to maximizing the total Andreev processes, but rather their component that is odd in energy
Reviewed June 26, 2026 · model on record in the stance chip above.
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