33 citations · 108 across the 9 of their papers we have counts for
9 papers
Fluctuation-Controlled Asymmetric Kinetics in Metal-Insulator Transitions
Tapas Bar, David Pesquera, Timm Swoboda +5
We report asymmetric kinetics in thermally driven metal-insulator transitions (MITs) in 1T-TaS. Using combined transport, calorimetric, and Raman measurements, we show that the…
Domain-induced control of latent heat in freestanding BaTiO membranes
Tapas Bar, David Pesquera, Arnau Villalobos-Martin +11
Thin ferroelectric BaTiO films often exhibit continuous transitions instead of the first-order behavior of bulk crystals, a discrepancy usually attributed to epitaxial strain o…
Disorder-aided Early Warning Signals: Predicting Catastrophic Shifts in Athermal Systems
Tapas Bar, Anurag Banerjee, Blai Casals +2
The early prediction of tipping points, distinguished by sudden and catastrophic shifts from stable states, poses a challenging task that would enable us to assess the impending th…
Real-time microscopic view of the relaxation of a glass
Marta Ruiz-Ruiz, Ana Vila-Costa, Tapas Bar +6
The understanding of glassy dynamics above the devitrification temperature of a glass remains poorly understood. Here, we use real-time AFM imaging to build a spatio-temporal map o…
Critical Slowing Down at the Abrupt Mott Transition: When the First-Order Phase Transition Becomes Zeroth-Order and Looks Like Second-Order
Satyaki Kundu, Tapas Bar, Rajesh Kumble Nayak +1
We report that the thermally-induced Mott transition in vanadium sesquioxide shows critical-slowing-down and enhanced variance ('critical opalescence') of the order parameter fluct…
Finite-dimensional signature of spinodal instability in an athermal hysteretic transition
Anurag Banerjee, Tapas Bar
We study the off-equilibrium critical phenomena across a hysteretic first-order transition in disordered athermal systems. The study focuses on the zero temperature random field Is…
Absolute calibration of the latent heat of transition using differential thermal analysis
Tapas Bar, Bhavtosh Bansal
We describe a simple and accurate differential thermal analysis set up to measure the latent heat of solid state materials undergoing abrupt phase transitions in the temperature ra…
Suppression of spinodal instability by disorder in an athermal system
Tapas Bar, Arup Ghosh, Anurag Banerjee
We observed asymmetric critical slowing down and asymmetric dynamical scaling exponent in the superheating and supercooling kinetic processes during the thermally-induced metal-ins…
Kinetic Spinodal Instabilities in the Mott Transition in V2O3: Evidence from Hysteresis Scaling and Dissipative Phase Ordering
Tapas Bar, Sujeet Kumar Choudhary, Md. Arsalan Ashraf +4
We present the first systematic observation of scaling of thermal hysteresis with the temperature scanning rate around an abrupt thermodynamic transition in correlated electron sys…