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Raman spectroscopy of the van der Waals altermagnet Co$_{1/4}$NbSe$_2$

T0 review · 2 major / 4 minor · reviewed 2026-07-11 · grok-4.5

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Pith's one-line read Co intercalation rebuilds the Raman spectrum of NbSe2 by zone folding alone; Co atoms stay silent, yet A1g modes that push Se toward Co still feel the spins.

desk verdict Solid first Raman+DFT map of Co1/4NbSe2 that cleanly kills the “metal-monolayer mode” mislabel for 1/4 intercalates and shows modest, eigenvector-selective spin-phonon coupling; quantitative λ is soft but not load-bearing. read the letter →

arxiv 2607.05616 v1 pith:QW3ZOMHY submitted 2026-07-06 cond-mat.mtrl-sci cond-mat.mes-hall

Dushyanthini Balasundaram , Bishal Thapa , Resham Regmi , Nirmal J. Ghimire , Igor I. Mazin , Patrick M. Vora This is my paper · ORCID
classification cond-mat.mtrl-scicond-mat.mes-hall
keywords altermagnetRamanspectroscopyzonefoldingspin-phononcouplingintercalatedTMDCo1/4NbSe2vanderWaalsmagnet
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 shows that putting cobalt atoms into the van der Waals gaps of NbSe2 completely remakes its Raman spectrum without the cobalt atoms themselves ever moving in any Raman-active vibration. The 2x2 cobalt superlattice folds zone-boundary phonons of the parent crystal back to the center of the Brillouin zone, where they hybridize with the original zone-center modes and produce six observed peaks of A1g and E2g symmetry. Polarization selection rules and density-functional eigenvectors confirm that every Raman-active displacement involves only niobium and selenium; cobalt is fixed by symmetry. Temperature sweeps through the altermagnetic transition at 168 K reveal no discontinuous jumps in frequency, consistent with short-range spin correlations that persist above the ordering temperature. Soft deviations of two A1g modes from pure anharmonic behavior, however, are attributed to spin-phonon coupling because those modes alone displace selenium atoms toward the stationary cobalt sites. The result clarifies how intercalation reshapes lattice dynamics in transition-metal dichalcogenides and demonstrates that altermagnetic order can still couple to phonons even when the magnetic atoms are Raman-silent.

What carries the argument

2x2 zone folding that maps NbSe2 zone-boundary phonons onto Gamma, followed by hybridization that produces mixed-character A1g and E2g eigenvectors in which cobalt remains stationary; spin-phonon coupling is then read from the low-temperature deviation of those A1g frequencies from a Balkanski anharmonic fit.

What would settle it

A Raman measurement on a non-magnetic isostructural 1/4 intercalate (or on Co1/4NbSe2 under a field that suppresses magnetic order) that still shows the same low-temperature frequency deviations would falsify the spin-phonon assignment of Delta omega.

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Extended reading notes

Core claim

Co intercalation reconstructs the vibrational spectrum of NbSe2 exclusively through zone folding and subsequent hybridization of former zone-boundary and zone-center Nb/Se modes; cobalt atoms do not participate in any Raman-active eigenvector by symmetry, yet the A1g modes whose selenium displacements point toward the cobalt sites exhibit clear spin-phonon coupling without discontinuous jumps at the Neel temperature.

Load-bearing premise

The entire low-temperature deviation of each Raman frequency from a high-temperature anharmonic fit is assumed to come only from spin-phonon coupling with an effective spin of 3/2, even though the measured ordered moment is smaller and AFM calculations match experiment less well than FM ones.

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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

2 major / 4 minor

Summary. The manuscript reports polarization-resolved and temperature-dependent Raman spectroscopy of the intercalated van der Waals altermagnet Co1/4NbSe2, combined with DFT phonon calculations. Co intercalation produces a 2 imes2 superlattice that reconstructs the Raman spectrum of NbSe2 via zone folding and hybridization of former zone-boundary and Γ-point Nb/Se modes; six Raman-active modes (3 A1g + 3 E2g) are identified by selection rules and matched to DFT. Symmetry analysis and eigenvectors show that Co atoms are stationary in all Raman-active modes (in contrast to common literature assignments of “metal-monolayer” modes and to 1/3 intercalates). Temperature series across TN ≈ 168 K exhibit no discontinuous jumps, but A1g modes whose Se displacements point toward Co show clear residuals relative to a Balkanski anharmonic fit performed only in the paramagnetic range; these residuals are interpreted as spin-phonon coupling.

Significance. The work cleanly settles a recurring misassignment in the Raman literature of magnetically intercalated TMDs: for 1/4 stoichiometry the low-energy A1g features arise from zone-folded Nb/Se modes, not intercalant vibrations. The mode-selective spin-phonon coupling that tracks Se out-of-plane eigenvectors supplies one of the first lattice-dynamical signatures of altermagnetism in this materials family. Polarization selection rules, multi-flake temperature series, and tabulated DFT eigenvectors make the central claims reproducible and transferable to other predicted 1/4 altermagnetic intercalates.

major comments (2)
  1. Table 1 and surrounding text: AFM (altermagnetic-order) frequencies agree worse with experiment than FM for several modes (notably A11g off by ~17 cm−1). The paper notes this but does not quantify how the discrepancy affects the subsequent spin-phonon interpretation that relies on the same magnetic structure. A short discussion of possible origins (moment size, exchange-correlation functional, residual short-range order) would strengthen the claim that the observed residuals are magnetic in origin.
  2. Eq. (5) and Table 2: the conversion Δω → λ assumes an effective localized spin S = 3/2 even though neutron diffraction reports only 1.34 μB. While the qualitative mode selectivity is robust, the absolute λ values are therefore model-dependent. Reporting λ also for S corresponding to the measured moment (or simply quoting Δω) would make the quantitative claim more transparent without altering the central conclusions.
minor comments (4)
  1. Fig. 4 caption and text: the Balkanski fit range is stated as 170–300 K; a brief justification that three-phonon processes remain adequate down to ~TN would help readers who expect four-phonon terms at higher T.
  2. Supplementary Tables S3–S8: the eigenvectors are essential for the spin-phonon argument; a single sentence in the main text pointing readers to the Se z-components of A21g and A31g versus A11g would improve accessibility.
  3. Introduction: the phrase “metal-monolayer modes” is correctly criticized; adding one or two explicit citations that use this terminology would make the literature correction more precise.
  4. Methods: laser power (300 μW) and integration time are given; a short note confirming the absence of heating-induced shifts (e.g., by power-dependent checks) would be useful for future comparisons.

Circularity Check

1 steps flagged · score 1.0 of 10

No significant circularity: Raman frequencies/symmetries and DFT eigenvectors are independent of the Balkanski residual extraction; self-citation supplies only TN and moment values.

  1. self citation load bearing [Sec. 3, paragraph after Eq. (6) and Table 2]
    "Prior neutron scattering measurements by members of our collaboration have determined that the magnetic moment is 1.34 μB per Co atom [15] ... With this assumption, we extract the spin phonon coupling constant λ for each mode from Δω/2.25"

    TN and the ordered moment that convert residual Δω into numerical λ are taken from the authors’ own prior discovery paper. The citation is not load-bearing for the qualitative claims (mode-selective residuals matching Se z-displacements, no jump at TN), but it is the sole source of the quantitative scale of λ.

full rationale

The derivation chain is self-contained. Polarization selection rules (Raman tensors Eqs. 1–3 and VV/VH intensities) assign A1g/E2g symmetries directly from measured spectra (Fig. 1d). DFT (VASP, GGA/r2SCAN) supplies independent frequencies (Table 1) and eigenvectors (Supp. Tables S3–S8) showing zero Co displacement in all Raman-active modes and Se z-motion only in the A1g family; these are compared to experiment without fitting the target residuals. Temperature series are fit solely on the paramagnetic window 170–300 K with the standard Balkanski three-phonon form (Eq. 6); the residual Δω at 5 K is then interpreted as λ⟨Si·Sj⟩ (Eq. 5) using the externally measured moment. This is ordinary extraction of a coupling constant, not a prediction forced by construction. The sole self-citation ([15], overlapping authors) supplies TN ≈ 168 K and the 1.34 μB moment used for the numerical value of λ; it does not underwrite the mode assignments, the zone-folding claim, or the absence of discontinuities. No uniqueness theorem, ansatz smuggling, or renaming of known results appears. Score 1 reflects only the minor, non-load-bearing self-citation for material parameters.

Assumptions & free parameters 2 free parameters · 3 assumptions · 0 invented entities

The spectroscopic assignments rest on standard group theory and DFT phonon calculations; the spin-phonon constants rest on an anharmonic baseline model plus an effective-spin approximation. No new particles or forces are postulated.

free parameters (2)
  • Balkanski A and ω0m for each of six modes
    Fitted exclusively to the 170–300 K paramagnetic data (Eq. 6) and then extrapolated; the residuals define Δω and therefore λ.
  • effective spin S = 3/2
    Chosen by hand despite neutron moment 1.34 μB; used to convert Δω into λ = Δω / 2.25.
assumptions (3)
  • standard math Raman tensors and selection rules for space group of Co1/4NbSe2 (A1g, E1g, E2g) correctly describe the backscattering intensities.
    Invoked in Sec. 3 and Eqs. 1–4 to assign observed peaks.
  • domain assumption DFT (GGA-PBE / r2SCAN) Γ-point eigenvectors accurately identify which atoms move in each Raman mode.
    Used throughout Sec. 3 and SI Tables S3–S8 to prove Co is stationary and to link Se z-motion to spin-phonon coupling.
  • domain assumption Three-phonon Balkanski model captures all non-magnetic anharmonicity above TN so that residuals below TN are purely magnetic.
    Stated when introducing Eq. 6; alternative sigmoid-Boltzmann was discarded as noise-sensitive.

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Pith. "Pith review of Raman spectroscopy of the van der Waals altermagnet Co$_{1/4}$NbSe$_2$." pith.science (2026). https://pith.science/paper/QW3ZOMHY

@misc{pith2026260705616,
  author       = {Pith},
  title        = {Pith review of: Raman spectroscopy of the van der Waals altermagnet Co$_1/4$NbSe$_2$},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/QW3ZOMHY}},
  note         = {Machine review of arXiv:2607.05616}
}
abstract

We investigate the influence of Co intercalation and altermagnetic order on the lattice dynamics of the layered compound Co$_{1/4}$NbSe$_2$. Polarization-resolved Raman spectroscopy, supported by density-functional theory, enables identification of six Raman-active phonons. Co intercalation drives a substantial reconstruction of the vibrational spectrum through zone folding of NbSe$_2$ phonons, producing hybridized modes with mixed zone-center and zone-boundary character. Despite this, Co atoms do not participate in any Raman-active modes by symmetry, which is in marked contrast to related 1/3 compounds where intercalant modes do contribute to the Raman spectrum. Temperature-dependent Raman measurements across the altermagnetic transition show no discontinuities, which is consistent with short-range spin correlations in the quasi-one-dimensional Co chains. However, we find evidence for spin-phonon coupling in A$_{1g}$ symmetry modes owing to their out-of-plane Se displacements. Our work demonstrates the substantial impact of intercalation on the vibrational properties of transition metal dichalcogenides and the presence of spin-phonon interactions in a newly discovered altermagnetic material.

Figures

Figures reproduced from arXiv: 2607.05616 by the authors.

Figure 1
Figure 1. FIG. 1. Lattice structure of Co [PITH_FULL_IMAGE:figures/full_fig_p003_1.png] view at source ↗
Figure 2
Figure 2. FIG. 2 [PITH_FULL_IMAGE:figures/full_fig_p004_2.png] view at source ↗
Figure 3
Figure 3. FIG. 3. Temperature evolution of Raman spectra from 5 K [PITH_FULL_IMAGE:figures/full_fig_p004_3.png] view at source ↗
Figures from the paper (1 more)
Figure 4
Figure 4. Figure 4: FIG. 4. Temperature dependence of Raman frequency shifts [PITH_FULL_IMAGE:figures/full_fig_p005_4.png]

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Works this paper leans on

54 extracted references · 2 canonical work pages

  1. [1]

    Raman spectroscopy of the van der Waals altermagnet Co$_{1/4}$NbSe$_2$

    INTRODUCTION Intercalated transition metal dichalcogenides (TMDs) provide a versatile platform for achieving tailored mag- netic phases. Monolayers of V, Cr, Mn, Fe, Co and Ni can order within the van der Waals (vdW) gap of TaS 2, TaSe2, NbSe 2, and NbS 2, resulting in ferromagnetism (FM), antiferromagnetism (AFM), chiral helimagnetism, noncoplanar AFM, a...

    work page Pith review arXiv 2026

  2. [2]

    Experimental Details Single crystals of Co 1/4NbSe2 were grown by chemical vapor transport using iodine as the transport agent in a single zone horizontal tube furnace

    METHODS A. Experimental Details Single crystals of Co 1/4NbSe2 were grown by chemical vapor transport using iodine as the transport agent in a single zone horizontal tube furnace. Initially, a polycrys- talline sample was prepared by heating stoichiometric amounts of cobalt powder (Alfa Aesar 99.998%), niobium powder (Alfa Aesar 99.8%), and selenium piece...

  3. [3]

    The energy cutoff in VASP wasE cutoff ≈ 600 eV and 8×8×4 k-point sampling was used in the calculations

    as well as r2SCAN [39] version were used in all calculations. The energy cutoff in VASP wasE cutoff ≈ 600 eV and 8×8×4 k-point sampling was used in the calculations. The spin-orbit interaction was not included in the calculations, as its effect on lattice properties in these materials is rather weak. The calculated magnetic moment on Co is 1.3µ B for a st...

  4. [4]

    2H-NbSe 2 fea- tures a layered structure in which niobium (Nb) atoms are coordinated by selenium (Se) atoms in the trigonal- prismatic geometry

    RESUL TS We first discuss the structure of the parent compound NbSe2 before examining Co 1/4NbSe2. 2H-NbSe 2 fea- tures a layered structure in which niobium (Nb) atoms are coordinated by selenium (Se) atoms in the trigonal- prismatic geometry. The unit cell contains two distinct, symmetry-equivalent Nb atomic positions, forming two separate layers. In the...

  5. [5]

    metal-monolayer

    to fit the high-temperature NM data given by, ωm(T) =ω 0m +A 1 + 2 ex −1 ,(6) whereω m(T) is the temperature-dependent frequency of modem,ω 0m represents the frequency of modem in the absence of anharmonic effects,Ais a constant representing the magnitude of the anharmonicity, and x= ¯hω0m 2kB T . This formulation accounts for the decay of op- tical phono...

  6. [6]

    The ordering of the Co atoms in a 2×2 superlattice increases the number of Raman active modes through zone folding and Γ-Z.B

    CONCLUSION In this study we have combined temperature- dependent Raman spectroscopy with DFT calculations to understand how Co intercalation and AM order mod- ify the vibrational modes of Co1/4NbSe2. The ordering of the Co atoms in a 2×2 superlattice increases the number of Raman active modes through zone folding and Γ-Z.B. mode hybridization. We find tha...

  7. [7]

    ˇSmejkal, J

    L. ˇSmejkal, J. Sinova, and T. Jungwirth, Phys. Rev. X 12, 040501 (2022)

    2022

  8. [8]

    Husremovi´ c, C

    S. Husremovi´ c, C. K. Groschner, K. Inzani, I. M. Craig, K. C. Bustillo, P. Ercius, N. P. Kazmierczak, J. Syndikus, M. Van Winkle, S. Aloni, T. Taniguchi, K. Watanabe, S. M. Griffin, and D. K. Bediako, J. Am. Chem. Soc. 144, 12167 (2022)

    2022

Show all 54 references
  1. [10]

    L. S. Xie, S. Husremovi´ c, O. Gonzalez, I. M. Craig, and D. K. Bediako, J. Am. Chem. Soc.144, 9525 (2022)

    2022

  2. [11]

    Togawa, T

    Y. Togawa, T. Koyama, K. Takayanagi, S. Mori, Y. Kousaka, J. Akimitsu, S. Nishihara, K. Inoue, A. S. Ovchinnikov, and J. Kishine, Phys. Rev. Lett.108, 107202 (2012)

    2012

  3. [12]

    S. Tang, R. S. Fishman, S. Okamoto, J. Yi, Q. Zou, M. Fu, A.-P. Li, D. Mandrus, and Z. Gai, Nano Lett. 18, 4023 (2018)

    2018

  4. [13]

    Zager, S.-S

    B. Zager, S.-S. Zhang, H. Schiff, R. Fan, P. Steadman, C. D. Batista, and K. W. Plumb, Phys. Rev. B113, 184441 (2026)

    2026

  5. [14]

    N. L. Nair, E. Maniv, C. John, S. Dober, A. Neber, S. Ay- ber, S. Fang, C. Tsai, S. M. Griffin, C. N. Lau, J.-H. Chu, and J. G. Analytis, Nat. Mater.19, 153 (2020)

    2020

  6. [15]

    ˇSmejkal, J

    L. ˇSmejkal, J. Sinova, and T. Jungwirth, Phys. Rev. X 12, 031042 (2022)

    2022

  7. [16]

    Q. Liu, X. Dai, and S. Bl¨ ugel, Nat. Phys. , 1 (2025)

    2025

  8. [17]

    L. Bai, W. Feng, S. Liu, L. ˇSmejkal, Y. Mokrousov, and Y. Yao, Adv. Funct. Mater.34, 2409327 (2024). 7

    2024

  9. [18]

    C. Song, H. Bai, Z. Zhou, L. Han, H. Reichlova, J. H. Dil, J. Liu, X. Chen, and F. Pan, Nat. Rev. Mater.10, 473 (2025)

    2025

  10. [19]

    S. Lee, S. Lee, S. Jung, J. Jung, D. Kim, Y. Lee, B. Seok, J. Kim, B. G. Park, L. ˇSmejkal, C.-J. Kang, and C. Kim, Phys. Rev. Lett.132, 036702 (2024)

    2024

  11. [20]

    Reimers, L

    S. Reimers, L. Odenbreit, L. ˇSmejkal, V. N. Strocov, P. Constantinou, A. B. Hellenes, R. Jaeschke Ubiergo, W. H. Campos, V. K. Bharadwaj, A. Chakraborty, T. Denneulin, W. Shi, R. E. Dunin-Borkowski, S. Das, M. Kl¨ aui, J. Sinova, and M. Jourdan, Nat. Commun.15, 2116 (2024)

    2024

  12. [21]

    R. B. Regmi, H. Bhandari, B. Thapa, Y. Hao, N. Sharma, J. McKenzie, X. Chen, A. Nayak, M. El Gazzah, B. G. M´ arkus, L. Forr´ o, X. Liu, H. Cao, J. F. Mitchell, I. I. Mazin, and N. J. Ghimire, Nat. Commun.16, 4399 (2025)

    2025

  13. [22]

    N. Dale, O. A. Ashour, M. Vila, R. B. Regmi, J. Fox, C. W. Johnson, A. Fedorov, A. Stibor, N. J. Ghimire, and S. M. Griffin, Non-relativistic spin splitting above and below the Fermi level in ag-wave altermagnet (2024)

    2024

  14. [23]

    A. P. Sakhya, M. I. Mondal, M. Sprague, R. B. Regmi, A. K. Kumay, H. Sheokand, I. Mazin, N. J. Ghimire, M. Neupane,et al., arXiv preprint arXiv:2503.16670 (2025), arXiv:2503.16670 [cond-mat.mtrl-sci]

    2025 arXiv

  15. [24]

    Day-Roberts, H

    E. Day-Roberts, H. Wu, O. Erten, and A. S. Botana, Altermagnetic materials library of intercalated transition metal dichalcogenides (2026)

    2026

  16. [25]

    A. Sah, T. Y. Lim, C. Conner, A. Chakraborty, G. Vig- nale, T.-R. Chang, P. Sukhachov, and G. Bian, npj Quan- tum Mater. https://doi.org/10.1038/s41535-026-00885-5 (2026)

    2026 doi

  17. [26]

    J. L. Musfeldt, Y. Gu, J. T. Haraldsen, K. Du, P. Yapa, J. Yang, D. G. Mandrus, S.-W. Cheong, and Z. Liu, npj Quantum Mater.10, 27 (2025)

    2025

  18. [27]

    P. Park, W. Cho, C. Kim, Y. An, M. Avdeev, K. Iida, R. Kajimoto, and J.-G. Park, Phys. Rev. B109, L060403 (2024)

    2024

  19. [28]

    M. A. A. Mohamed, M. M. Hammo, A. A. Popov, S. M. Avdoshenko, D. Wolf, S. Schiemenz, E. K. Moustafa, A. Soliman, R. Giraud, J. Dufouleur, B. B¨ uchner, and S. Hampel, ACS Appl. Nano Mater.9, 8311 (2026)

    2026

  20. [29]

    S. Fan, S. Neal, C. Won, J. Kim, D. Sapkota, F. Huang, J. Yang, D. G. Mandrus, S.-W. Cheong, J. T. Haraldsen, and J. L. Musfeldt, Nano Lett.21, 99 (2021)

    2021

  21. [30]

    L. S. Xie, S. S. Fender, C. Mollazadeh, W. Fang, M. D. Frontzek, S. Husremovi´ c, K. Li, I. M. Craig, B. H. Goodge, M. P. Erodici, and D. K. Bediako, Nat. Com- mun.16, 5711 (2025)

    2025

  22. [31]

    J. L. Musfeldt, J. Yang, R. E. Putnam, S. Zhang, J. T. Haraldsen, S.-W. Cheong, and Z. Liu, npj 2D Mater. Appl.10, 3 (2026)

    2026

  23. [32]

    N. Li, M. Dai, Z. Zhao, X. Zhou, Q. Wang, R. Duan, S. Ma, C. Li, Y. Hou, X. Luo, and H. Zhao, Chem. Mater. 37, 9953 (2025)

    2025

  24. [33]

    X. Guo, Q. Feng, Z. Tian, A. Shen, M. M. Al-Makeen, Y. Wang, H. Xie, Y. Nie, Q. Xia, and H. Huang, Appl. Phys. Lett.128, 131902 (2026)

    2026

  25. [34]

    Y. Cao, A. Mishchenko, G. L. Yu, E. Khestanova, A. P. Rooney, E. Prestat, A. V. Kretinin, P. Blake, M. B. Shalom, C. Woods, J. Chapman, G. Balakrishnan, I. V. Grigorieva, K. S. Novoselov, B. A. Piot, M. Potemski, K. Watanabe, T. Taniguchi, S. J. Haigh, A. K. Geim, and R. V. Go...

    2015

  26. [35]

    Nguyen, H.-P

    L. Nguyen, H.-P. Komsa, E. Khestanova, R. J. Kashtiban, J. J. P. Peters, S. Lawlor, A. M. Sanchez, J. Sloan, R. V. Gorbachev, I. V. Grigorieva, A. V. Krasheninnikov, and S. J. Haigh, ACS Nano11, 2894 (2017)

    2017

  27. [36]

    Kresse and J

    G. Kresse and J. Hafner, Phys. Rev. B47, 558 (1993)

    1993

  28. [37]

    Kresse and J

    G. Kresse and J. Furthm¨ uller, Comput. Mater. Sci.6, 15 (1996)

    1996

  29. [38]

    Kresse and J

    G. Kresse and J. Furthm¨ uller, Phys. Rev. B54, 11169 (1996)

    1996

  30. [39]

    H. T. Stokes, D. M. Hatch, and B. J. Campbell, SMODES, ISOTROPY software suite (2021)

    2021

  31. [40]

    H. T. Stokes and D. M. Hatch, J. Appl. Crystallogr.38, 237 (2005)

    2005

  32. [41]

    M. I. Aroyo, J. M. Perez-Mato, C. Capillas, E. Kroumova, S. Ivantchev, G. Madariaga, A. Kirov, and H. Won- dratschek, Z. Kristallogr. Cryst. Mater.221, 15 (2006)

    2006

  33. [42]

    M. I. Aroyo, A. Kirov, C. Capillas, J. M. Perez-Mato, and H. Wondratschek, Acta Crystallogr. A62, 115 (2006)

    2006

  34. [43]

    P. E. Bl¨ ochl, Phys. Rev. B50, 17953 (1994)

    1994

  35. [44]

    J. P. Perdew, K. Burke, and M. Ernzerhof, Phys. Rev. Lett.77, 3865 (1996)

    1996

  36. [45]

    J. W. Furness, A. D. Kaplan, J. Ning, J. P. Perdew, and J. Sun, J. Phys. Chem. Lett.11, 8208 (2020)

    2020

  37. [46]

    X. Xi, L. Zhao, Z. Wang, H. Berger, L. Forr´ o, J. Shan, and K. F. Mak, Nat. Nanotechnol.10, 765 (2015)

    2015

  38. [47]

    P. Y. Yu and M. Cardona,Fundamentals of Semiconduc- tors: Physics and Materials Properties, 4th ed., Graduate Texts in Physics (Springer, 2010)

    2010

  39. [48]

    M. P. Erodici, T. T. Mai, L. S. Xie, S. Li, S. S. Fender, S. Husremovi´ c, O. Gonzalez, A. R. Hight Walker, and D. K. Bediako, J. Phys. Chem. C127, 9787 (2023)

    2023

  40. [49]

    L. D. Casto, A. J. Clune, M. O. Yokosuk, J. L. Musfeldt, T. J. Williams, H. L. Zhuang, M.-W. Lin, K. Xiao, R. G. Hennig, B. C. Sales, J.-Q. Yan, and D. Mandrus, APL Mater.3, 041515 (2015)

    2015

  41. [50]

    J. Cao, L. I. Vergara, J. L. Musfeldt, A. P. Litvinchuk, Y. J. Wang, S. Park, and S.-W. Cheong, Phys. Rev. B 78, 064307 (2008)

    2008

  42. [51]

    Balkanski, R

    M. Balkanski, R. F. Wallis, and E. Haro, Phys. Rev. B 28, 1928 (1983)

    1928

  43. [52]

    Joshi, I

    J. Joshi, I. R. Stone, R. Beams, S. Krylyuk, I. Kalish, A. V. Davydov, and P. M. Vora, Appl. Phys. Lett.109, 031903 (2016)

    2016

  44. [53]

    H. C. Mandujano, G. S. Salas, T. Li, P. Y. Zavalij, A. Manj´ on-Sanz, N. P. Butch, and E. E. Rodriguez, Phys. Rev. B110, 144420 (2024)

    2024

  45. [54]

    Y. Liu, Z. Hu, X. Tong, E. D. Bauer, and C. Petrovic, Phys. Rev. Res.4, 013048 (2022)

    2022

  46. [55]

    J. M. van den Berg and P. Cossee, Inorg. Chim. Acta2, 143 (1968). Raman spectroscopy of the van der Waals altermagnet Co 1/4NbSe2 Dushyanthini Balasundaram, 1, 2,∗ Bishal Thapa, 1, 2,∗ Resham Regmi, 3, 4 Nirmal J. Ghimire, 3, 4 Igor I. Mazin, 1, 2 and Patrick M. Vora 1, 2,† 1D...

    1968

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