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Exceptionally Slow, Long Range, and Non-Gaussian Critical Fluctuations Dominate the Charge Density Wave Transition

Autor: Kalimuddin, Sk, Chatterjee, Sudipta, Bera, Arnab, Afzal, Hasan, Bera, Satyabrata, Roy, Deep Singha, Das, Soham, Debnath, Tuhin, Bansal, Bhavtosh, Mondal, Mintu

$(TaSe_4)_2I$ 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 the pinned CDW order parameter near the transition can be inferred from

Externí odkaz: http://arxiv.org/abs/2308.09756

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Raman signatures of lattice dynamics across inversion symmetry breaking phase transition in quasi-1D compound, (TaSe$_4$)$_3$I

Autor: Bera, Arnab, Rana, Partha Sarathi, Pradhan, Suman Kalyan, Palit, Mainak, Kalimuddin, Sk, Bera, Satyabrata, Debnath, Tuhin, Das, Soham, Roy, Deep Singha, Afzal, Hasan, Datta, Subhadeep, Mondal, Mintu

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 article reports such an inversion symmetry-breaking structural phase

Externí odkaz: http://arxiv.org/abs/2307.11459

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Enhanced coercivity and emergence of spin cluster glass state in 2D ferromagnetic material Fe3GeTe2

Autor: Bera, Satyabrata, Pradhan, Suman Kalyan, Pal, Riju, Pal, Buddhadeb, Bera, Arnab, Kalimuddin, Sk, Das, Manjil, Roy, Deep Singha, Afzal, Hasan, Pal, Atindra Nath, Mondal, Mintu

Two-dimensional (2D) van der Waals (vdW) magnetic materials with high coercivity and high $T_\text{C}$ are desired for spintronics and memory storage applications. Fe$_3$GeTe$_2$ (F3GT) is one such 2D vdW ferromagnet with a reasonably high $T_\text{C

Externí odkaz: http://arxiv.org/abs/2212.14221

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Nonlinear coherent light-matter interaction in 2D MoSe$_2$ nanoflakes for all-optical switching and logic applications

Autor: Kalimuddin, Sk, Das, Biswajit, Chakraborty, Nabamita, Samanta, Madhupriya, Bera, Satyabrata, Bera, Arnab, Roy, Deep Singha, Pradhan, Suman Kalyan, Chattopadhyay, Kalyan K., Mondal, Mintu

We report a strong nonlinear optical response of 2D MoSe$_2$ nanoflakes (NFs) through spatial self-phase modulation (SSPM) and cross-phase modulation (XPM) induced by nonlocal coherent light-matter interactions. The coherent interaction of light and

Externí odkaz: http://arxiv.org/abs/2206.12564

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