Model of Reversible Breakdown in HfO2 Based on Fractal Patterns
We propose a model of the kinetics of reversible breakdown in metal-insulator-metal structures with afnia based on the growth of fractal patterns of defects when the insulator is subject to an external voltage. The probability that a defect is (or is not) generated and the position where it is gener...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2015/136938 |
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| _version_ | 1850165830305710080 |
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| author | P. Lorenzi R. Rao G. Romano F. Irrera |
| author_facet | P. Lorenzi R. Rao G. Romano F. Irrera |
| author_sort | P. Lorenzi |
| collection | DOAJ |
| description | We propose a model of the kinetics of reversible breakdown in metal-insulator-metal structures with afnia based on the growth of fractal patterns of defects when the insulator is subject to an external voltage. The probability that a defect is (or is not) generated and the position where it is generated depend on the electric field distribution. The new defect moves accordingly to fractal rules and attach to another defect in a tree branch. When the two electrodes sandwiching the insulating film are connected a conductive filament is formed and the breakdown takes place. The model is calibrated with experiments inducing metastable soft breakdown events in Pt/HfO2/Pt capacitors. |
| format | Article |
| id | doaj-art-e1d0b055dc56455c9032010bf49da46a |
| institution | OA Journals |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-e1d0b055dc56455c9032010bf49da46a2025-08-20T02:21:38ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242015-01-01201510.1155/2015/136938136938Model of Reversible Breakdown in HfO2 Based on Fractal PatternsP. Lorenzi0R. Rao1G. Romano2F. Irrera3Department of Information Engineering, Electronics and Communications, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Information Engineering, Electronics and Communications, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Information Engineering, Electronics and Communications, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Information Engineering, Electronics and Communications, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyWe propose a model of the kinetics of reversible breakdown in metal-insulator-metal structures with afnia based on the growth of fractal patterns of defects when the insulator is subject to an external voltage. The probability that a defect is (or is not) generated and the position where it is generated depend on the electric field distribution. The new defect moves accordingly to fractal rules and attach to another defect in a tree branch. When the two electrodes sandwiching the insulating film are connected a conductive filament is formed and the breakdown takes place. The model is calibrated with experiments inducing metastable soft breakdown events in Pt/HfO2/Pt capacitors.http://dx.doi.org/10.1155/2015/136938 |
| spellingShingle | P. Lorenzi R. Rao G. Romano F. Irrera Model of Reversible Breakdown in HfO2 Based on Fractal Patterns Advances in Condensed Matter Physics |
| title | Model of Reversible Breakdown in HfO2 Based on Fractal Patterns |
| title_full | Model of Reversible Breakdown in HfO2 Based on Fractal Patterns |
| title_fullStr | Model of Reversible Breakdown in HfO2 Based on Fractal Patterns |
| title_full_unstemmed | Model of Reversible Breakdown in HfO2 Based on Fractal Patterns |
| title_short | Model of Reversible Breakdown in HfO2 Based on Fractal Patterns |
| title_sort | model of reversible breakdown in hfo2 based on fractal patterns |
| url | http://dx.doi.org/10.1155/2015/136938 |
| work_keys_str_mv | AT plorenzi modelofreversiblebreakdowninhfo2basedonfractalpatterns AT rrao modelofreversiblebreakdowninhfo2basedonfractalpatterns AT gromano modelofreversiblebreakdowninhfo2basedonfractalpatterns AT firrera modelofreversiblebreakdowninhfo2basedonfractalpatterns |