info:eu-repo/semantics/article
Universal dimensional crossover of domain wall dynamics in ferromagnetic films
Fecha
2019-05Registro en:
Torres, W. Savero; Pardo, R. Díaz; Bustingorry, Sebastián; Kolton, Alejandro Benedykt; Lemaître, A.; et al.; Universal dimensional crossover of domain wall dynamics in ferromagnetic films; American Physical Society; Physical Review B; 99; 20; 5-2019; 1-5
2469-9969
CONICET Digital
CONICET
Autor
Torres, W. Savero
Pardo, R. Díaz
Bustingorry, Sebastián
Kolton, Alejandro Benedykt
Lemaître, A.
Jeudy, V.
Resumen
The magnetic domain wall motion driven by a magnetic field is studied in (Ga,Mn)As and (Ga,Mn)(As,P) films of different thicknesses. In the thermally activated creep regime, a kink in the velocity curves and a jump of the roughness exponent evidence a dimensional crossover in the domain wall dynamics. The measured values of the roughness exponent ζ1d=0.62±0.02 and ζ2d=0.45±0.04 are compatible with theoretical predictions for the motion of elastic line (d=1) and surface (d=2) in two- and three-dimensional media, respectively.