Artículo
Domain wall damped harmonic oscillations induced by curvature gradients in elliptical magnetic nanowires
Bittencourt, G. H. R.; Castillo Sepúlveda, S.; Chubykalo Fesenko, O.; Moreno Ortega, Roberto
; Altbir, D.; Carvalho Santos, V. L.
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Fecha de publicación:
21/11/2022
Editorial:
American Physical Society
Revista:
Physical Review B
ISSN:
2469-9950
e-ISSN:
2469-9969
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This paper focuses on the dynamics of a domain wall (DW) displacing along an elliptically bent nanowire (NW) under the action of spin-polarized electric currents and external magnetic fields. Our results evidence that a curvature gradient induces an exchange-driven effective tangential field responsible for pinning a DW at the maximum curvature point in the NW. However, the competition between the torques produced by the external stimuli and the curvature-induced effective fields changes the DW equilibrium position and phase. Therefore, when the external stimuli are below a certain threshold, the DW follows a damped harmonic oscillation around the new equilibrium position. Above this threshold, DW displaces along the NW under an oscillatory translational motion.
Palabras clave:
Nanowires
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Articulos(IFEG)
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Citación
Bittencourt, G. H. R.; Castillo Sepúlveda, S.; Chubykalo Fesenko, O.; Moreno Ortega, Roberto; Altbir, D.; et al.; Domain wall damped harmonic oscillations induced by curvature gradients in elliptical magnetic nanowires; American Physical Society; Physical Review B; 106; 17; 21-11-2022; 1-11
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