activity
20182025
most citedThermal Expansion Coefficient and Phonon Dynamics in Coexisting Allotropes of Monolayer WS2 Probed by Raman Scattering

32 citations · 125 across the 14 of their papers we have counts for

collaborators

14 papers

cond-mat.mtrl-sci2025

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…

cond-mat.str-el2024

Dynamics of electron-electron correlated to electron-phonon coupled phase progression in trilayer nickelate La4Ni3O10

Sonia Deswal, Deepu Kumar, Dibyata Rout +2

Trilayer nickelates are a rich class of materials exhibiting diverse correlated phenomena, including superconductivity, density wave transitions, non-Fermi liquid behavior along wi…

cond-mat.str-el2023

Broken weak and strong spin rotational symmetries and tunable interaction between phonon and the continuum in Cr2Ge2Te6

Atul G. Chakkar, Deepu Kumar, Pradeep Kumar

Phase transitions with lowering temperature is a manifestation of decreased entropy and within the Landau theoretical framework these are accompanied by the symmetry breaking. When…

cond-mat.mtrl-sci2023

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…

cond-mat.mtrl-sci2023

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…

cond-mat.str-el2022★ 10 cited

Fluctuating Fractionalized Spins in Quasi Two-dimensional Magnetic V0.85PS3

Vivek Kumar, Deepu Kumar, Birender Singh +5

Quantum spin liquid (QSL), a state characterized by exotic low energy fractionalized excitations and statistics is still elusive experimentally and may be gauged via indirect exper…