32 citations · 125 across the 14 of their papers we have counts for
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Tunable resonant Raman scattering with temperature in vertically aligned 2H-SnS2
Atul G. Chakkar, Deepu Kumar, Ashok Kumar +2
Two-dimensional semiconducting materials have a wide range of applications in various fields due to their excellent properties and rich physics. Here, we report a detailed investig…
Interplay of topology and antiferromagnetic order in two-dimensional van der Waals crystals of (NixFe1-x)2P2S6
N. Khan, D. Kumar, V. Kumar +6
Mermin-Wagner theorem forbid spontaneous symmetry breaking of spins in one/two-dimensional systems at finite temperature and rules out the stabilization of this ordered state. Howe…
Tunable Resonance and Electron-Phonon Coupling in Layered MoS2
Deepu Kumar, Nasaru Khan, Rahul Kumar +2
Resonance Raman scattering, a very effective and sensitive technique for atomically thin semiconducting transition metal dichalcogenide, can be used to observe the phonons from the…
Unravelling the coupling between excitonic quasiparticles-electron-phonon and role of interlayer coupling in vertically and horizontally aligned layered MoS2
Deepu Kumar, Rahul Kumar, Mahesh Kumar +1
Excitonic quasi-particles, excitons/trions/bi-excitons, and their coupling with phonons and charge carriers play a crucial role in controlling the optical properties of atomically…
Electron-Phonon Coupling, Thermal Expansion Coefficient, Resonance Effect and Phonon Dynamics in High Quality CVD Grown Mono and Bilayer MoSe2
Deepu Kumar, Vivek Kumar, Rahul Kumar +2
Probing phonons, quasi-particle excitations and their coupling has enriched our understanding of these 2D materials and proved to be crucial for developing their potential applicat…
Davydov Splitting, Resonance Effect and Phonon Dynamics in CVD grown Layered MoS2
Deepu Kumar, Birender Singh, Rahul Kumar +2
We present a comprehensive temperature dependent Raman measurements for horizontally aligned CVD grown layered MoS2 in a temperature range of 4 to 330 K under resonance condition.…