12 citations · 42 across the 12 of their papers we have counts for
12 papers
Long-lived relaxation channel and exciton-phonon coupling in Ta2NiSe5 via non-degenerate pump-probe spectroscopy
Poulami Ghosh, Anupama Chauhan, Sidhanta Sahu +3
An excitonic insulator represents a quantum phase in which spontaneous condensation of excitons leads to novel many-body phenomena. TaNSi (TNSe), a layered narrow-gap semic…
Spin-reorientation as a switch for electronic topology in van der Waals ferromagnets
Satyabrata Bera, Sudipta Chatterjee, Suman Kalyan Pradhan +5
The interplay between spin reorientation and topological electronic structure in two-dimensional (2D) van der Waals (vdW) ferromagnets is central to understanding how magnetic anis…
Emergence of a hidden-order phase well below the charge density wave transition in a topological Weyl semimetal (TaSe)I
Sk Kalimuddin, Sudipta Chatterjee, Arnab Bera +7
The emergence of a charge density wave (CDW) in a Weyl semimetal -- a correlated topological phase, is exceptionally rare in condensed matter systems. In this context, the quasi-on…
Signatures of emergent surface states across a displacive topological phase transition in BiI
Deep Singha Roy, Sk Kalimuddin, Subrata Pachhal +13
Topological phase transitions involving crystalline symmetry breaking provide a fertile ground to explore the interplay between symmetry, topology, and emergent quantum phenomena.…
Direction-Dependent Conduction Polarity in Altermagnetic CrSb
Banik Rai, Krishnendu Patra, Satyabrata Bera +5
CrSb has recently gained immense attention as an altermagnetic candidate. This work reports on the experimental observation of direction-dependent conduction polarity (DDCP) in alt…
Barrier height inhomogeneity and origin of 1/f-noise in topological insulator-based photo-detector
Sk Kalimuddin, Biswajit Das, Sudipta Chatterjee +4
Topological insulators (TIs) with symmetry-protected surface states, offer exciting opportunities for next-generation photonic and optoelectronic device applications. The heterojun…
Anomalous Hall effect induced by Berry curvature in topological nodal-line van der Waals ferromagnet FeGeTe
Satyabrata Bera, Sudipta Chatterjee, Subhadip Pradhan +5
The exploration of nontrivial transport phenomena associated with the interplay between magnetic order and spin-orbit coupling (SOC), particularly in van der Waals (vdW) systems ha…
Exceptionally Slow, Long Range, and Non-Gaussian Critical Fluctuations Dominate the Charge Density Wave Transition
Sk Kalimuddin, Sudipta Chatterjee, Arnab Bera +7
is a well-studied quasi-one-dimensional compound long-known to have a charge-density wave (CDW) transition around 263 K. We argue that the critical fluctuations of th…
Raman signatures of lattice dynamics across inversion symmetry breaking phase transition in quasi-1D compound, (TaSe)I
Arnab Bera, Partha Sarathi Rana, Suman Kalyan Pradhan +9
Structural phase transition can occur due to complex mechanisms other than simple dynamical instability, especially when the parent and daughter structure is of low dimension. This…
Centrosymmetric-noncentrosymmetric Structural Phase Transition in Quasi one-dimensional compound, (TaSe)I
Arnab Bera, Samir Rom, Suman Kalyan Pradhan +4
(TaSe)I, a compound belonging to the family of quasi-one-dimensional transition-metal tetrachalcogenides, has drawn significant attention due to a recent report on possible…
Enhanced coercivity and emergence of spin cluster glass state in 2D ferromagnetic material Fe3GeTe2
Satyabrata Bera, Suman Kalyan Pradhan, Riju Pal +8
Two-dimensional (2D) van der Waals (vdW) magnetic materials with high coercivity and high are desired for spintronics and memory storage applications. FeGeTe (…
Revisiting the magnetic ordering through anisotropic magnetic entropy change in quasi-two-dimensional metallic ferromagnet, FeGeTe
Satyabrata Bera, Suman Kalyan Pradhan, Md Salman Khan +7
We have investigated the nature of ferromagnetic order and phase transitions in two dimensional (2D) van der Waals (vdW) layered material, FeGeTe through measurements of ma…