4 papers
Raman Spectroscopic Investigation of Kitaev Quantum Spin Liquids
Vivek Kumar, Pradeep Kumar
Quantum spin liquids, a highly topologically entangled, dynamically correlated state where quantum fluctuations preclude any long-range ordering down to absolute zero. In the searc…
Hidden Quantum State and Signature of Mott Transition in Two-dimensional 1T-TaS2
Vivek Kumar, Birender Singh, Pradeep Kumar
Here we report a comprehensive inelastic light scattering studies on 1T-TaS2 with different thickness. This compound is well known for its rich charge density wave phases. Along wi…
Surface phonons and possible structural phase transition in a topological semimetal PbTaSe2
Vivek Kumar, Pradeep Kumar
Topological insulators are a novel class of quantum materials characterized by protected gapless surface or edge states but insulating bulk states which is due to presence of spin-…
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…