Selected Publications

1. Chaitanya B. Auti, A. G. Chakkar, S. Selter, Y. Shemerliuk, B. Büchner, S. Aswartham, and Pradeep Kumar “Antipolar and short- and long-range magnetic ordering in quasi-two-dimensional AgCrP2S6 ”, J. Mater. Chem. C 14, 3504-3515 (2026), Selected for cover image (March 2026 issue)

2. Sonia Deswal, R. Bag, S. Haravifard and Pradeep Kumar, “Raman Spectroscopic Studies of Anisotropic Triangular Lattice System YbMgGaO4 ”, Phys. Rev. Materials 10, 046202 (2026).

3. Sonia Deswal, R. Bag, S. Haravifard and Pradeep Kumar, “Coupled phonons-crystal field excitations and phonon anomalies in the triangular dipolar magnet Ba3Yb(BO3)3 ” Phys. Rev. B 113, 174425 (2026).

4. Vivek Kumar and Pradeep Kumar “Surface phonons and possible structural phase transition in a topological semimetal PbTaSe2 ”, Annalen der Physik, 537, 2400277(2025). Selected for cover image (Feb.2025 issue)

5. Sonia Deswal, D. Kumar, D. Rout, S. Singh and Pradeep Kumar “Dynamics of electron-electron correlation and electron-phonon coupled phase progression in trilayer nickelate La4Ni3O10 ”, Appl. Phys. Lett. 127, 071903 (2025).

6. Sonia Deswal, D. Rout, N. Jana, K. Pal, Surjeet Singh, Pradeep Kumar “Interplay of phonons, intertwined density waves, and induced spin density wave in trilayer nickelates Pr4-xLaxNi3O10 ”, Phys. Rev. B 112, 235151 (2025).

7. Atul G. Chakkar, C. B. Auti, D. Kumar, N. Jana, K. Pal, Pradeep Kumar “ Raman signature of multiple phase transitions and quasi-particle excitations in putative Kitaev spin liquid candidate Na2Co2TeO6 ” , Phys. Rev. B 112, 144417 (2025).

8. Hari N. Vasavan, S. Saxena, V. Srihari, A. K. Das, P. Gami, N. Dagar, S. Deswal, Pradeep Kumar, H. K. Poswal, and Sunil Kumar “Elevating the Concentration of Na Ions to 1 in P2 Type Layered Oxide Cathodes”, Adv. Funct. Mater. 2421733 (2025).

9. Vivek Kumar, Y. Shemerliuk, M. Behnami, B. Buchner, S. Aswartham and Pradeep Kumar “Dynamics of phonons and magnetic continuum in thin flakes of V(1−x)PS3 ”, Phys. Rev. Materials 9, 076201 (2025).

10. Chaitanya B. Auti, A. G. Chakkar, S. Selter, Y. Shemerliuk, B. Büchner, S. Aswartham, and Pradeep Kumar “Hysteretic Phonons and Quasielastic Response: A Raman Study of Thermal Memory in Two-dimensional CuCrP2S6 ”, ACSAppl.Opt.Mater. ACS Appl. Opt. Mater. 4, 64-72 (2025), https://doi.org/10.1021/acsaom.5c00460

11. Vivek Kumar, Birender Singh and Pradeep Kumar “Hidden Quantum State and Signature of Mott Transition in Two-dimensional 1T-TaS2”, Phys. Status Solidi RRL 19, 2500056 (2025).

12. Nasaru Khan, D. Kumar, S. Semwal, Y. Shemerliuk, B. Büchner, K. Pal, S. Aswartham and Pradeep Kumar “Short and long-range magnetic ordering and emergent topological transition in (Mn1−xNix)2P2S6 ”, Scientific Reports 15, 4438 (2025).

13. S. Kumar, A. Betal, A. Kumar, Atul G. Chakkar, Pradeep Kumar, M. Kwoka, S. Sahu, and M. Kumar “Enhancing NO2 gas sensing: The dual impact of UV and thermal activation on vertically aligned Nb-MoS2 for superior response and selectivity”, ACS Sens. 10, 2191-2202 (2025).

14. Atul G. Chakkar, Deepu Kumar and Pradeep Kumar “Broken weak and strong spin rotational symmetries and tunable interaction between phonon and the continuum in Cr2Ge2Te6 ” , Phys. Rev. B 109, 134406 (2024).

15. Sonia Deswal, Deepu Kumar, Dibyata Rout, Surjeet Singh and Pradeep Kumar “Quasi two dimensional frustrated spin-1 triangular lattice antiferromagnet Ca3NiNb2O9 : A proximate spin liquid”, Phys. Rev. B 110, 024430 (2024).

16. Nasaru Khan, D. Kumar, V. Kumar, Y. Shemerliuk, S. Selter, B. Büchner, K. Pal, S. Aswartham and Pradeep Kumar “The interplay of topology and antiferromagnetic order in two-dimensional van der Waals crystals of (NixFe1-x)2P2S6 ”, 2D Materials 11, 035018 (2024).

17. Vivek Kumar, D. Kumar, B. Singh, Y. Shemerliuk, M. Behnami, B. Buchner, S. Aswartham, Pradeep Kumar “Fluctuating Fractionalized Spins in Quasi Two-dimensional Magnetic V0.85PS3 ”, Phys. Rev. B 107, 094417 (2023). Highlighted by arxiv cond. matter.

18. A. Kumar, A. Gutal, N. Sharma, D. Kumar, G. Zhang, H. Kim, Pradeep Kumar, M. Paranjothy, M. Kumar, M. Strano “Investigations of Vacancy-Assisted Selective Detection of NO2 Molecules in Vertically Aligned SnS2 ”, ACS Sensor 8, 1357 (2023).

19. Deepu Kumar, V. Kumar, R. Kumar, M. Kumar, Pradeep Kumar “Electron-Phonon Coupling, Thermal Expansion Coefficient, Resonance Effect and Phonon Dynamics in High Quality CVD Grown Mono and Bilayer MoSe2 ”, Phys. Rev. B 105, 085419 (2022).

20. Birender Singh, D. Kumar, V. Kumar, M. Vogl, S. Wurmehl, S. Aswartham, B. Büchner and Pradeep Kumar “Fractional Spin fluctuations and quantum liquid signature in Gd2ZnIrO6 ”, Phys. Rev. B 104, 134402 (2021).

21. Deepu Kumar, B. Singh, R. Kumar, M. Kumar and Pradeep Kumar “Davydov Splitting, Resonance Effect and Phonon Dynamics in CVD grown Layered MoS2 ”, Nanotechnology 32, 285705 (2021).

22. Birender Singh, M. Vogl, S. Wurmehl, S. Aswartham, B. Büchner and Pradeep Kumar “Kitaev Magnetism and Fractionalized Excitations in Double Perovskite Sm2ZnIrO6 ”. Phys. Rev. Research 2, 013040 (2020).

23. Deepu Kumar, B. Singh, R. Kumar, M. Kumar and Pradeep Kumar “Anisotropic Electron-Photon-Phonon Coupling in Layered MoS2 ”, J. Phys.: Condens. Matter 32, 415702 (2020).

24. Birender Singh, M Vogl, S Wurmehl, S Aswartham, B Büchner and Pradeep Kumar “Kramer doublets, phonons, crystal-field excitations and their coupling in Nd2ZnIrO6 ”, Phys. Rev. Research 2, 023162 (2020).

25. Birender Singh, M Vogl, S Wurmehl, S Aswartham, B Büchner and Pradeep Kumar “Coupling of lattice, spin and intra-configurational excitations of Eu3+ in Eu2ZnIrO6 ”, Phys. Rev. Research 2, 043179 (2020).

26. Birender Singh, G. A. Cansever, T. Dey, A. Maljuk, S. Wurmehl, B. Büchner and Pradeep Kumar, “Orbiton-Phonon coupling in Ir5+ (5d4) double perovskite Ba2YIrO6 ”, J. Phys. Cond. Matter 31, 065603 (2019).

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