Criticality of tuning in athermal phase transitions

Abstract

We experimentally address the importance of tuning in athermal phase transitions, which are triggered only by a slowly varying external field acting as tuning parameter. Using higher order statistics of fluctuations, a singular critical instability is detected for the first time in spite of an apparent universal self-similar kinetics over a broad range of driving force. The results as well as the experimental technique are likely to be of significance to many slowly driven non-equilibrium systems from geophysics to material science which display avalanche dynamics.

5 pages, 4 figures

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• Tracking random walk of individual domain walls in cylindrical nanomagnets with resistance noise
• Origin of scale-free intermittency in structural first-order phase transitions
• Conductivity noise study of the insulator-metal transition and phase co-existence in epitaxial samarium nickelate thin films
• First order antiferro-ferromagnetic transition in Fe49(Rh0.93Pd0.07)51 under simultaneous application of magnetic field and external pressure
• Thickness dependent transition from the 1T${}^{\prime }$ to Weyl semimetal phase in ultrathin MoTe${}_2$: Electrical transport, Noise and Raman studies
• Probing a spin-glass state in SrRuO3 thin films through higher-order statistics of resistance fluctuations
• Conductivity noise across temperature driven transitions of rare-earth nickelate heterostructures
• A simple kinetic sensor to structural transitions
• Modelling avalanches in martensites
• Exceptionally Slow, Long Range, and Non-Gaussian Critical Fluctuations Dominate the Charge Density Wave Transition
• Evidence of Athermal Metastable Phase in a Halide Perovskite: Optically Tracked Thermal-Breach Memory
• Finite-dimensional signature of spinodal instability in an athermal hysteretic transition
• Resistivity noise in crystalline magnetic nanowires and its implications to domain formation and kinetics
• Emergence of a hidden-order phase well below the charge density wave transition in a topological Weyl semimetal (TaSe${}_4$)${}_2$I