%0 Journal Article %T Microscopic observation of two-level systems in a metallic glass model %+ Systèmes Désordonnés et Applications %+ Laboratoire Charles Coulomb (L2C) %+ Dipartimento di Fisica [Roma La Sapienza] %+ Columbia University [New York] %+ Department of Applied Mathematics and Theoretical Physics [Cambridge] (DAMTP) %A Mocanu, Felix %A Berthier, Ludovic %A Ciarella, Simone %A Khomenko, Dmytro %A Reichman, David %A Scalliet, Camille %A Zamponi, Francesco %< avec comité de lecture %@ 0021-9606 %J Journal of Chemical Physics %I American Institute of Physics %V 158 %N 1 %P 014501 %8 2023-01-07 %D 2023 %Z 2209.09579 %R 10.1063/5.0128820 %Z Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] %Z Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn] %Z Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph]Journal articles %X 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. %G English %L hal-03920514 %U https://cnrs.hal.science/hal-03920514 %~ ENS-PARIS %~ CNRS %~ OPENAIRE %~ L2C %~ PSL %~ UNIV-MONTPELLIER %~ SORBONNE-UNIVERSITE %~ SORBONNE-UNIV %~ LPENS %~ UNIV-PARIS %~ UNIVERSITE-PARIS %~ UP-SCIENCES %~ ENS-PSL %~ SU-TI %~ ANR %~ ALLIANCE-SU %~ UM-2015-2021 %~ UM-EPE