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Title

Pinning-Dependent Field-Driven Domain Wall Dynamics and Thermal Scaling in an Ultrathin Pt/Co/Pt Magnetic Film

Authors
Gorchon, J.
Bustingorry, S.
Ferré, J.
Jeudy, V.
Kolton, A. B.
Published in Physical Review Letters. 2014, vol. 113, no. 2, p. 027205
Abstract Magnetic-field-driven domain wall motion in an ultrathin Pt/Co(0.45 nm)/Pt ferromagnetic film with perpendicular anisotropy is studied over a wide temperature range. Three different pinning dependent dynamical regimes are clearly identified: the creep, the thermally assisted flux flow, and the depinning, as well as their corresponding crossovers. The wall elastic energy and microscopic parameters characterizing the pinning are determined. Both the extracted thermal rounding exponent at the depinning transition, ψ=0.15, and the Larkin length crossover exponent, φ=0.24, fit well with the numerical predictions.
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Research group Groupe Giamarchi
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GORCHON, J. et al. Pinning-Dependent Field-Driven Domain Wall Dynamics and Thermal Scaling in an Ultrathin Pt/Co/Pt Magnetic Film. In: Physical Review Letters, 2014, vol. 113, n° 2, p. 027205. https://archive-ouverte.unige.ch/unige:87813

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Deposited on : 2016-09-27

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