Universal Critical Exponents of the Magnetic Domain Wall Depinning Transition
Magnetic field driven domain wall dynamics in a ferrimagnetic GdFeCo thin film with perpendicular magnetic anisotropy is studied using low temperature magneto-optical Kerr microscopy. Measurements performed in a practically athermal condition allow for the direct experimental determination of the ve...
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| Veröffentlicht in: | arXiv.org 2021-07 |
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| creator | Albornoz, Lucas J Ferrero, Ezequiel E Kolton, Alejandro B Jeudy, Vincent Bustingorry, Sebastian Curiale, Javier |
| description | Magnetic field driven domain wall dynamics in a ferrimagnetic GdFeCo thin film with perpendicular magnetic anisotropy is studied using low temperature magneto-optical Kerr microscopy. Measurements performed in a practically athermal condition allow for the direct experimental determination of the velocity (\( \beta = 0.30 \pm 0.03 \)) and correlation length (\( \nu = 1.3 \pm 0.3 \)) exponents of the depinning transition. The whole family of exponents characterizing the transition is deduced, providing evidence that the depinning of magnetic domain walls is better described by the quenched Edwards-Wilkinson universality class. |
| doi_str_mv | 10.48550/arxiv.2101.06555 |
| format | Article |
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| subjects | Domain walls Exponents Ferrimagnetism Low temperature Magnetic anisotropy Magnetic domains Physics - Disordered Systems and Neural Networks Physics - Materials Science Physics - Statistical Mechanics Thin films |
| title | Universal Critical Exponents of the Magnetic Domain Wall Depinning Transition |
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