title: Pinning-dependent field-driven domain wall dynamics and thermal scaling in an ultrathin Pt/Co/Pt magnetic film.
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.
authors: Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR8502, 91405 Orsay, France.
authors: J
authors: J
authors: Gorchon
authors: CONICET, Centro Atómico Bariloche, 8400 San Carlos de Bariloche, Río Negro, Argentina.
authors: S
authors: S
authors: Bustingorry
authors: Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR8502, 91405 Orsay, France.
authors: J
authors: J
authors: Ferré
authors: Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR8502, 91405 Orsay, France and Université Cergy-Pontoise, 95000 Cergy-Pontoise, France.
authors: V
authors: V
authors: Jeudy
authors: CONICET, Centro Atómico Bariloche, 8400 San Carlos de Bariloche, Río Negro, Argentina.
authors: A B
authors: AB
authors: Kolton
authors: DPMC-MaNEP, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
authors: T
authors: T
authors: Giamarchi