Universal critical exponents of the magnetic domain wall depinning transition
| Autor: | L. J. Albornoz, Vincent Jeudy, Sebastian Bustingorry, A. B. Kolton, Javier Curiale, Ezequiel E. Ferrero |
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| Přispěvatelé: | Center for Complexity and Biosystems, Department of Physics, University of Milano, Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF) |
| Rok vydání: | 2021 |
| Předmět: |
Magnetic domain
Perpendicular magnetic anisotropy FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas Ferrimagnetism 0103 physical sciences [PHYS.COND.CM-DS-NN]Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn] Domain wall dynamics [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] 010306 general physics Condensed Matter - Statistical Mechanics ComputingMilieux_MISCELLANEOUS Kerr microscopy Physics Condensed Matter - Materials Science Statistical Mechanics (cond-mat.stat-mech) Condensed matter physics Materials Science (cond-mat.mtrl-sci) Disordered Systems and Neural Networks (cond-mat.dis-nn) Condensed Matter - Disordered Systems and Neural Networks Renormalization group Beta (plasma physics) [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] Critical exponent |
| Zdroj: | Physical Review B Physical Review B, American Physical Society, 2021, 104 (6), ⟨10.1103/PhysRevB.104.L060404⟩ |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | 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. Comment: 6 pages, 3 figures. Ancillary Material with 10 pages and 4 figures is also included |
| Databáze: | OpenAIRE |
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