Light-Matter Interaction in Two-Dimensional Materials
कर्मण्येवाधिकारस्ते मा फलेषु कदाचन ।
मा कर्मफलहेतुर्भुर्मा ते संगोऽस्त्वकर्मणि ॥
भगवद गीता 2.47
Research interests at a glance
1) Understanding the Coupling between Exciton-Photon-Phonon- Electron using Raman and Photoluminescence techniques in:
Ø Semiconducting and metallic 2D layered Materials
Ø Graphene, h-BN and Black Phosphorus (BP) etc.
Ø Magnetic and Superconducting 2D layered Materials
Ø Topological Insulator and Thermoelectric Materials
2) Material characterization using Raman, PL, AFM, SEM, XPS etc.
Recently accepted/published papers
Atul G Chakkar, Deepu Kumar, Pradeep Kumar, Broken weak and strong spin rotational symmetries and tunable interaction between phonon and the continuum in Cr2Ge2Te6, Physical Review B (Accepted)
M. Badole, H. N. Vasavan, S. Saxena, A. K. Das, P. Gami, Deepu Kumar, S. Deswal, Pradeep Kumar, and S. Kumar, High-Performance [00l]‑Textured BiAlO3‑Doped K0.5Bi0.5TiO3 Ceramics, ACS Appl. Electro. Mat. (2023).
R. Wadhwa, D. Kaur, Y. Zhang, A. Alexender, Deepu Kumar, Pradeep Kumar, M. AG Namboothiry, Q. Qiao, Mukesh Kumar Fast Response and High-Performance UV-C to NIR Broadband Photodetector based on MoS2/a-Ga2O3 heterostructures and impact of Band-alignment and Charge Carrier Dynamics, Applied Surface Science 632, 157597 (2023)
A. Kumar, A. P. Gutal, N. Sharma, Deepu Kumar, G. Zhang, H. Kim, Pradeep Kumar, M. Paranjothy, M. Kumar, M. S Strano, Investigations of Vacancy-Assisted Selective Detection of NO2 Molecules in Vertically Aligned SnS2, ACS Sensors 8, 1357 (2023)
V. Kumar, Deepu Kumar, B. Singh, Y. Shemerliuk, M. Behnami, B. Buchner, S. Aswartham, Pradeep Kumar, Fluctuating Fractionalized Spins in Quasi Two-dimensional Magnetic V0.85PS3, Physical Review B 107, 094417 (2023)
A. Mehta, Deepu Kumar, S. Dwivedi, S. Kumar, and Pradeep Kumar, Phonon dynamics in lead free perovskite (1-x) KNN-xBAN (x= 0.0–0.1): a temperature dependent raman study, Physica Scripta 98, 035711(2023)
R. Wadhwa, A. Kumar, R. Sarkar, P. P. Mohanty, Deepu Kumar, S. Deswal, Pradeep Kumar, R. Ahuja, S. Chakraborty, M. Kumar, and M. Kumar, Pt Nanoparticles on Vertically Aligned Large Area MoS2 Flakes for Selective H2 Sensing at Room Temperature , ACS Applied Nano Materials (2023)
R. Wadhwa, A. Ghosh, Deepu Kumar, Pradeep Kumar and M. Kumar “Platinum nanoparticle sensitized plasmonic-enhanced broad spectral photodetection in large area vertical-aligned MoS2 flakes ” Nanotechnology 33, 255702 (2022)
Deepu Kumar, R. Kumar, M. Kumar and Pradeep Kumar, "Coupled excitonic quasiparticles-electron-phonon and interlayer coupling in vertically and horizontally aligned MoS2 " Journal of Materials Chemistry C 10, 5684 (2022)
Deepu Kumar, V. Kumar, R. Kumar, M. Kumar and Pradeep Kumar, "Electron-phonon coupling, thermal expansion coefficient, resonance effect, and phonon dynamics in high-quality CVD-grown monolayer and bilayer MoSe2" Phys. Rev. B 105, 085419 (2022)
B. Singh, Deepu 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)
