Universal pinning energy barrier for driven domain walls in thin   ferromagnetic films
  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. 
Vincent Jeudy, Alexandra Mougin, Sebastian Bustingorry, Williams   Savero Torres, Jon Gorchon, Alejandro Kolton, Aristide Le...
cond-mat.mes-hall cond-mat.dis-nn