Kinetic Spinodal Instabilities in the Mott Transition in V2O3: Evidence from Hysteresis Scaling and Dissipative Phase Ordering

Abstract

We present the first systematic observation of scaling of thermal hysteresis with the temperature scanning rate around an abrupt thermodynamic transition in correlated electron systems. We show that the depth of supercooling and superheating in vanadium sesquioxide (V2O3) shifts with the temperature quench rates. The dynamic scaling exponent is close to the mean field prediction of 2/3. These observations, combined with the purely dissipative continuous ordering seen in "quench-and-hold" experiments, indicate departures from classical nucleation theory toward a barrier-free phase ordering associated with critical dynamics. Observation of critical-like features and scaling in a thermally induced abrupt phase transition suggests that the presence of a spinodal-like instability is not just an artifact of the mean field theories but can also exist in the transformation kinetics of real systems, surviving fluctuations.

arXiv comment15 pages, includes supplemental material

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Cited by in corpus (14)

• Critical Slowing Down at the Abrupt Mott Transition: When the First-Order Phase Transition Becomes Zeroth-Order and Looks Like Second-Order
• Dynamic Control of Nonequilibrium Metal-Insulator Transitions
• Dynamic hysteresis at a noisy saddle-node shows power-law scaling but nonuniversal exponent
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• Complete universal scaling in first-order phase transitions
• Suppression of spinodal instability by disorder in an athermal system
• Finite-dimensional signature of spinodal instability in an athermal hysteretic transition
• Probing the evolution of electronic phase-coexistence in complex systems by terahertz radiation
• Scaling behavior of Charge order melting in Magnetic field-Pressure-Temperature space of 2.5% Al doped Pr${}_{0.5}$Ca${}_{0.5}$MnO${}_3$
• Coercivity Landscape Characterizes Dynamic Hysteresis
• Cell dynamics simulations of coupled charge and magnetic phase transformation in correlated oxides
• Absolute calibration of the latent heat of transition using differential thermal analysis
• Spinodal-like scaling behavior after a temperature quench across the first-order phase transition in three-dimensional $q$-state Potts models
• Disorder-aided Early Warning Signals: Predicting Catastrophic Shifts in Athermal Systems