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.
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7 January 2023
Research Article|
January 03 2023
Microscopic observation of two-level systems in a metallic glass model
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Felix C. Mocanu
;
Felix C. Mocanu
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Resources, Software, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Laboratoire de Physique de l’École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris
, 75005 Paris, France
a)Author to whom correspondence should be addressed: [email protected]
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Ludovic Berthier
;
Ludovic Berthier
(Conceptualization, Formal analysis, Investigation, Methodology, Supervision, Validation, Visualization, Writing – review & editing)
2
Yusuf Hamied Department of Chemistry, University of Cambridge
, Lensfield Road, Cambridge CB2 1EW, United Kingdom
3
Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS
, 34095 Montpellier, France
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Simone Ciarella
;
Simone Ciarella
(Formal analysis, Software, Validation, Writing – review & editing)
1
Laboratoire de Physique de l’École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris
, 75005 Paris, France
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Dmytro Khomenko
;
Dmytro Khomenko
(Data curation, Validation, Visualization, Writing – original draft, Writing – review & editing)
4
Department of Chemistry, Columbia University
, 3000 Broadway, New York, New York 10027, USA
5
Dipartimento di Fisica, Sapienza Università di Roma
, P.le A. Moro 2, I-00185 Rome, Italy
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David R. Reichman
;
David R. Reichman
(Conceptualization, Formal analysis, Validation, Writing – review & editing)
4
Department of Chemistry, Columbia University
, 3000 Broadway, New York, New York 10027, USA
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Camille Scalliet
;
Camille Scalliet
(Conceptualization, Methodology, Software, Validation, Visualization, Writing – review & editing)
6
DAMTP, Centre for Mathematical Sciences, University of Cambridge
, Wilberforce Road, Cambridge CB3 0WA, United Kingdom
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Francesco Zamponi
Francesco Zamponi
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Project administration, Resources, Supervision, Validation, Writing – original draft, Writing – review & editing)
1
Laboratoire de Physique de l’École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris
, 75005 Paris, France
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Felix C. Mocanu
1,a)
Ludovic Berthier
2,3
Simone Ciarella
1
Dmytro Khomenko
4,5
David R. Reichman
4
Camille Scalliet
6
Francesco Zamponi
1
1
Laboratoire de Physique de l’École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris
, 75005 Paris, France
2
Yusuf Hamied Department of Chemistry, University of Cambridge
, Lensfield Road, Cambridge CB2 1EW, United Kingdom
3
Laboratoire Charles Coulomb (L2C), Université de Montpellier, CNRS
, 34095 Montpellier, France
4
Department of Chemistry, Columbia University
, 3000 Broadway, New York, New York 10027, USA
5
Dipartimento di Fisica, Sapienza Università di Roma
, P.le A. Moro 2, I-00185 Rome, Italy
6
DAMTP, Centre for Mathematical Sciences, University of Cambridge
, Wilberforce Road, Cambridge CB3 0WA, United Kingdom
a)Author to whom correspondence should be addressed: [email protected]
J. Chem. Phys. 158, 014501 (2023)
Article history
Received:
September 30 2022
Accepted:
December 13 2022
Citation
Felix C. Mocanu, Ludovic Berthier, Simone Ciarella, Dmytro Khomenko, David R. Reichman, Camille Scalliet, Francesco Zamponi; Microscopic observation of two-level systems in a metallic glass model. J. Chem. Phys. 7 January 2023; 158 (1): 014501. https://doi.org/10.1063/5.0128820
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