Crossed-ratchet effects for magnetic domain wall motion.

Pérez-Junquera, A; Marconi, V I; Kolton, A B; Alvarez-Prado, L M; Souche, Y; Alija, A; Vélez, M; Anguita, J V; Alameda, J M; Martín, J I; Parrondo, J M R

Pérez-Junquera, A; Marconi, V I; Kolton, A B; Alvarez-Prado, L M; Souche, Y; Alija, A; Vélez, M; Anguita, J V; Alameda, J M; Martín, J I; Parrondo, J M R.

Afiliación

Pérez-Junquera A; Departamento de Física, Universidad de Oviedo-CINN, Oviedo, Spain.

Phys Rev Lett ; 100(3): 037203, 2008 Jan 25.

Article en En | MEDLINE | ID: mdl-18233032

RESUMEN

We study both experimentally and theoretically the driven motion of domain walls in extended amorphous magnetic films patterned with a periodic array of asymmetric holes. We find two crossed-ratchet effects of opposite sign that change the preferred sense for domain wall propagation, depending on whether a flat or a kinked wall is moving. By solving numerically a simple phi(4) model we show that the essential physical ingredients for this effect are quite generic and could be realized in other experimental systems involving elastic interfaces moving in multidimensional ratchet potentials.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2008 Tipo del documento: Article País de afiliación: España Pais de publicación: Estados Unidos

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