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| Naji, M. |
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| Ertürk, Emre |
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| Azevedo, Nuno Monteiro |
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Ciarella, Simone
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Publications (7/7 displayed)
- 2023Microscopic observation of two-level systems in a metallic glass modelcitations
- 2021Collapse-induced phase transitions in binary interfacial microgel monolayerscitations
- 2020Rheology, rupture, reinforcement and reversibilitycitations
- 2020Rheology, rupture, reinforcement and reversibility:Computational approaches for dynamic network materialscitations
- 2019Swap-driven self-adhesion and healing of vitrimerscitations
- 2019Understanding, predicting, and tuning the fragility of vitrimeric polymerscitations
- 2018Dynamics of vitrimers: defects as a highway to stress relaxation:Defects as a Highway to Stress Relaxationcitations
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article
Microscopic observation of two-level systems in a metallic glass model
Abstract
International audience ; The low-temperature quasi-universal behavior of amorphous solids has been attributed to the existence of spatially localized tunneling defects found in the low-energy regions of the potential energy landscape. Computational models of glasses can be studied to elucidate the microscopic nature of these defects. Recent simulation work has demonstrated the means of generating stable glassy configurations for models that mimic metallic glasses using the swap Monte Carlo algorithm. Building on these studies, we present an extensive exploration of the glassy metabasins of the potential energy landscape of a variant of the most widely used model of metallic glasses. We carefully identify tunneling defects and reveal their depletion with increased glass stability. The density of tunneling defects near the experimental glass transition temperature appears to be in good agreement with experimental measurements.