30 citations · 67 across the 18 of their papers we have counts for
18 papers
Frustration-induced degenerate spin state with up-up-down-down ordering in corner-connected Heisenberg square-plaquettes
Pritam Manna, A. K. Bera
We investigate frustrated magnetism of a corner-connected square plaquette Heisenberg model with exchange interactions along the edges , along inter-plaquette links ,…
Spin-phonon interaction in a symmetry-enforced spin-polarized state
Suman Kalyan Pradhan, Dayal Das, Shubham Patel +8
Symmetry-governed magnetic materials have emerged as a promising platform for spintronic functionalities without net magnetization or stray magnetic fields, motivating the explorat…
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…
Magnetic field-induced non-trivial Lifshitz transition in TaCo2Te2
Suman Kalyan Pradhan, Xiaoming Ma, Jicheng Wang +14
Magnetic-field-driven Lifshitz transitions are typically considered zero-temperature phenomena involving Fermi-surface reconstruction without symmetry breaking. Here, we report an…
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…
Probing the magnetic ground state and magnetoelastic coupling in double perovskite ruthenate: Ca2ScRuO6
Asha Ann Abraham, Anjali Kumari, Md Aktar Hossain +4
Ruthenates, materials with a single magnetic Ruthenium (Ru) atom, often display an exotic array of ground states ranging from superconductivity to altermagnetism. In this work, we…
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.…
Revisiting MnSe : a Magnetic Semiconductor with Spin-Phonon coupling
Suman Kalyan Pradhan, Arnab Bera, Soham Das +3
Spin-phonon interactions in 2D magnetic materials are crucial in advancing next-generation spintronic devices. Therefore, identifying new materials with significant spin-phonon int…
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 (…
Nonlinear coherent light-matter interaction in 2D MoSe nanoflakes for all-optical switching and logic applications
Sk Kalimuddin, Biswajit Das, Nabamita Chakraborty +7
We report a strong nonlinear optical response of 2D MoSe nanoflakes (NFs) through spatial self-phase modulation (SSPM) and cross-phase modulation (XPM) induced by nonlocal cohe…
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…
Superconductivity coexisting with ferromagnetism in a quasi-one dimensional non-centrosymmetric (TaSe)I
Arnab Bera, Sirshendu Gayen, Suchanda Mondal +13
Low-dimensional materials with broken inversion symmetry and strong spin-orbit coupling can give rise to fascinating quantum phases and phase transitions. Here we report coexistenc…
A Colossal Electroresistance response, accompanied by metal-insulator transition, in a mixed-valent vanadate
Rafikul Ali Saha, Abhisek Bandyopadhyay, Irene Schiesaro +2
Colossal electroresistance (CER) in manganites, i.e., a large change in electrical resistance under the influence of either an applied electric field or an applied electric current…