Pressure-modulatedActivation Energy as a Unified Descriptor Of Mechanical Behavior in Metallic Glass

The functional properties of glasses are governed by their formation history and the complex relaxation processes they undergo. However, under extreme conditions, glass behaviors are still elusive. In this study, we employ simulations with varied protocols to evaluate the effectiveness of different descriptors in predicting mechanical properties across both low- and high-pressure regimes. Our finding demonstrates that conventional structural and configurational descriptors fail to correlate with the mechanical response following pressure release, whereas the activation energy descriptor exhibits robust linearity with shear modulus after correcting for pressure effects. Notably, the soft mode parameter emerges as an ideal and computationally efficient alternative for capturing this mechanical behavior. These findings provide critical insights into the influence of pressure on glassy properties, integrating the distinct features of compressed glasses into a unified theoretical framework.