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Crossed ratchet effects on magnetic domain walls: geometry and transverse field effects

AutorAlija, Alejandro ; Hierro-Rodríguez, A. ; Pérez-Junquera, A.; Alameda, J. M. ; Martín, José Ignacio ; Vélez, María
Fecha de publicación2011
EditorInstitute of Physics Publishing
CitaciónJournal of Physics D: Applied Physics 44(32): 325002 (2011)
ResumenDomain wall propagation across a 2D array of asymmetric holes is strongly dependent on the domain wall configuration: i.e. on whether the wall is flat or kinked. This results in interesting crossed ratchet and asymmetric accommodation effects that have been studied as a function of geometry and transverse field. Micromagnetic simulations have shown that the observation of crossed ratchet effects is easier for arrow than for triangular holes due to a larger field range in which kink propagation is the preferred mode for domain wall motion. Also, it has been found that dc transverse fields can produce a significant enhancement of the easy axis asymmetric accommodation and, also, that ac transverse fields can be rectified by the crossed ratchet potential.
URIhttp://hdl.handle.net/10261/50372
DOI10.1088/0022-3727/44/32/325002
Identificadoresdoi: 10.1088/0022-3727/44/32/325002
issn: 0022-3727
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