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Título : Crossed-Ratchet Effects for Magnetic DomainWall Motion
Autor : Pérez-Junquera, A., Marconi, V. I., Álvarez-Prado, L. M., Alija, Alfonso R., Vélez, M., Anguita, José Virgilio, Alameda, J. M., Martín, J. I.
Palabras clave : Magnetism
Domain wall
Ratcher effect
Fecha de publicación : 23-Jan-2008
Editor: American Physical Society
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 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.
Descripción : et al.
Versión del editor:
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.100.037203
Citación : Physical Review Letters 100, 037203 (2008)
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