Universal Pinning Energy Barrier for Driven Domain Walls in Thin Ferromagnetic Films

V. JEUDY; A. MOUGIN; S. BUSTINGORRY; W. SAVERO TORRES; J. GORCHON; A. B. KOLTON; A. LEMAITRE; J. P. JAMET

PHYSICAL REVIEW LETTERS

AMER PHYSICAL SOC

Lugar: New York; Año: 2016 vol. 117 p. 57201 - 57206

0031-9007

We report a comparative study of magnetic field driven domain wall motion in thin films made of different magnetic materials for a wide range of field and temperature. The full thermally activated creep motion, observed below the depinning threshold, is shown to be described by a unique universal energy barrier function. Our findings should be relevant for other systems whose dynamics can be modeled by elastic interfaces moving on disordered energy landscapes.